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Preprint ARTICLE | doi:10.20944/preprints202404.1284.v1

Robust Wideband Interference Suppression Method for GNSS Array Antenna Receiver via Hybrid Beamforming Technique

Zhenxing Xu, Qijia Dong, Shenyang Li, Fuzhan Yue, Meng Wang, Zhenghuan Xia, Xiao Chen, Shuangna Zhang, Guoji Zou, Huizheng Wang

Subject: Engineering, Aerospace Engineering Keywords: wideband interference; anti-jamming; hybrid beamforming; hybrid array; digital array

Online: 18 April 2024 (15:42:11 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.0953.v1

Two-Stage Multi-Satellite Scheduling Algorithm Based on Task Merging Mechanism

Jing Yu, Li Ning Xing, Yan Jie Song, Zhao Hui Liu

Subject: Engineering, Aerospace Engineering Keywords: multi-satellite scheduling; task merging; mergring task scheduling; firework algorithm

Online: 15 April 2024 (10:58:41 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.0830.v1

A New Type of WENO Scheme for Large Eddy Simulation of Turbomachinery Flows

Shuo Zhang, Dongdong Zhong, Hao Wang, Xingshuang Wu, Ning Ge

Subject: Engineering, Aerospace Engineering Keywords: WENO scheme; turbomachinery flow; NUAA-Turbo; large scale engineering application; LES

Online: 12 April 2024 (08:07:45 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.0391.v1

A Simple Method for Identifying the Natural Frequency of a Micro Satellite with a Primary Structure made of Aluminum Alloy

Keiichi Okuyama, Keigo Yoshikawa, Chihiro Oue

Subject: Engineering, Aerospace Engineering Keywords: micro satellite; natural frequency; stiffness requirement; structure designing; structure development

Online: 5 April 2024 (08:22:01 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.0329.v1

Redundant Space Manipulator Autonomous Guidance for In-Orbit Servicing via Deep Reinforcement Learning

Matteo D’Ambrosio, Lorenzo Capra, Andrea Brandonisio, Stefano Silvestrini, Michèle Roberta Lavagna

Subject: Engineering, Aerospace Engineering Keywords: Deep Reinforcement Learning; 7-DoF space manipulator; motion synchronization; In-Orbit Servicing

Online: 4 April 2024 (17:28:29 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.0102.v1

Subgrid Turbulent Flux Models for Large Eddy Simulations of Diffusion Flames in Space Propulsion

Daniel Martinez-Sanchis, Andrej Sternin, Sagnik Banik, Oskar Haidn, Martin Tajmar

Subject: Engineering, Aerospace Engineering Keywords: Large Eddy Simulation; Turbulence; Combustion; Methane; Propulsion

Online: 1 April 2024 (15:04:25 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.0057.v1

Numerical Analysis of the Influence of Typical Perturbation Forces on LEO Satellites Orbit Prediction at Different Altitudes

Yang Zhang, Shengmao He, Chao Peng, Yuchang Xu, Deyong Xian, Ran Li, Guang Yang, Hong Yuan

Subject: Engineering, Aerospace Engineering Keywords: LEO constellations; Perturbation force; Gravitational field order; orbit prediction; Atmospheric density model

Online: 1 April 2024 (13:30:31 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.0020.v1

Research on Aerodynamic Characteristics and Pitch Regulated Control Strategy of Coaxilcopter with Variable Rotor Spacing

Molei Zhao, Wei Wei, Zhifang Ke, Qingkai Meng, Jinghan Tu, Yongjie Shu, Haitao Zhang

Subject: Engineering, Aerospace Engineering Keywords: coaxilcopter; variable rotor space; aerodynamic performance; rotor interaction; flight control

Online: 1 April 2024 (10:04:31 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202403.1861.v1

Stability Analysis and Dynamic Simulations for Gravity Gradient of a Large Rigid Space Structure

Chenglei Tang, Jialiang Sun, Dongping Jin

Subject: Engineering, Aerospace Engineering Keywords: Stability analysis; Gravity gradient; Large rigid space structure; Orbit dynamics; Natural coordinate formulation

Online: 29 March 2024 (13:45:30 CET)

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Preprint ARTICLE | doi:10.20944/preprints202403.1725.v1

Pulsed Propulsion of Unmanned Aerial Vehicles by Centrifugal Force Modulation - First-Order Theory and Practicability

Wolfgang Holzapfel Dr.

Subject: Engineering, Aerospace Engineering Keywords: unmanned aerial vehicles; vehicle propulsion; controlled unbalance propulsion; energy storage/conversion; high speed rotors; centrifugal force modulation ;

Online: 28 March 2024 (08:31:42 CET)

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Preprint ARTICLE | doi:10.20944/preprints202403.1444.v1

Environmental Chamber Characterization of an Ice Detection Sensor for Aviation Using Graphene and PEDOT:PSS

Dario Farina, Marco Mazio, Hatim Machrafi, Patrick Queeckers, Carlo Saverio Iorio

Subject: Engineering, Aerospace Engineering Keywords: Ice Formation; Aircraft Ice Detection; Hazard Management; Graphene Sensors; In-Flight Safety Technology; Real-time Ice Monitoring; Resistance Signal Analysis; Pedot:PSS; Climatic chamber

Online: 25 March 2024 (08:47:38 CET)

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Preprint ARTICLE | doi:10.20944/preprints202403.1429.v1

Shock Wave and Aeroelastic Coupling in Overexpanded Nozzle

Haifeng Hu, Xinni Gao, YuShan Gao, Jianwen Yang

Subject: Engineering, Aerospace Engineering Keywords: shock wave; side load; Aeroelastic; CFD/CSD

Online: 25 March 2024 (06:25:09 CET)

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Preprint ARTICLE | doi:10.20944/preprints202402.0747.v2

Validation of a Mid-fidelity Numerical Approach for Wind Turbine Aerodynamics Characterization

Alberto Savino, Andrea Ferreri, Alex Zanotti

Subject: Engineering, Aerospace Engineering Keywords: Wind Turbine; Aerodynamics; Vortex Particle Method; Computational Fluid Dynamics

Online: 21 March 2024 (04:19:31 CET)

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Preprint ARTICLE | doi:10.20944/preprints202403.1160.v1

A Novel Preparation Method of Composite Bolted T-joint with High Bending Performance Based on Prepreg-RTM Co-Curing Process

Tao Zhang, Zhitao Luo, Jinxin Deng, Xiaoquan Cheng

Subject: Engineering, Aerospace Engineering Keywords: polymer composite, T-joint, preparation method, prepreg-RTM co-curing process, bending performance

Online: 19 March 2024 (14:43:03 CET)

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Preprint ARTICLE | doi:10.20944/preprints202403.0896.v2

A Comprehensive Dataset of the Aerodynamic and Geometric Coefficients of Airfoils in the Public Domain

Kanak Agarwal, Vedant Vijaykrishnan, Dyutit Mohanty, Manikandan Murugaiah

Subject: Engineering, Aerospace Engineering Keywords: Airfoil; Computational Fluid Dynamics (CFD); OpenFOAM; Class Shape Transformation (CST); Dataset; Aerodynamic Coefficients; Geometric Coefficients; Aerodynamics

Online: 19 March 2024 (01:27:39 CET)

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Preprint ARTICLE | doi:10.20944/preprints202403.1021.v1

Introduction of a Novel Structure for Light Unmanned Balloon’s Payload: A Comprehensive Hybrid Study

Norbert Hegyi, Gusztáv Fekete, János Jósvai

Subject: Engineering, Aerospace Engineering Keywords: novel payload structure; dodecahedron; PLA; low air pressure test; drop test; flight test

Online: 18 March 2024 (10:44:18 CET)

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Preprint ARTICLE | doi:10.20944/preprints202403.0890.v1

Heat Load Development and Heat Map Sensitivity Analysis for Civil Aero-Engines

Alireza Ebrahimi, Soheil Jafari, Theoklis Nikolaidis

Subject: Engineering, Aerospace Engineering Keywords: Thermal Management System; Heat Loads; Aero Engines

Online: 15 March 2024 (08:55:38 CET)

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Preprint ARTICLE | doi:10.20944/preprints202403.0896.v1

A Comprehensive Dataset of the Aerodynamic and Geometric Coefficients of Airfoils in the Public Domain

Kanak Agarwal, Vedant Vijaykrishnan, Dyutit Mohanty, Manikandan Murugaiah

Subject: Engineering, Aerospace Engineering Keywords: airfoil; computational fluid dynamics (CFD); OpenFOAM; class shape transformation (CST); dataset; aerodynamic coefficients; geometric coefficients; aerodynamics

Online: 15 March 2024 (07:55:22 CET)

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Preprint ARTICLE | doi:10.20944/preprints202403.0406.v1

Hexa-Propeller Airship for Environmental Surveillance and Monitoring in Amazon Rainforest

José Raul Azinheira, Reginaldo Hughes Carvalho, Ely Carneiro de Paiva, Rafael de Angelis Cordeiro

Subject: Engineering, Aerospace Engineering Keywords: Airship; Unmanned Aerial Vehicles; Autonomous Control System; Environmental Monitoring; Robotic Vehicles

Online: 7 March 2024 (08:20:19 CET)

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Preprint ARTICLE | doi:10.20944/preprints202403.0331.v1

Application of Optimal Scheduling for SAR Satellite Constellation: Multi-Imaging Mission in High-Density Regional Area

Kimoon Lee, Dongjin Kim, Daewon Chung, Seonho Lee

Subject: Engineering, Aerospace Engineering Keywords: Optimal scheduling; Synthetic Aperture Radar (SAR); Satellite constellation; Multi-imaging mission; High-density regional area; Modified Dynamic Programming (MDP)

Online: 6 March 2024 (07:13:48 CET)

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Preprint ARTICLE | doi:10.20944/preprints202403.0076.v1

An Autonomous Tow Truck Algorithm for Engineless Aircraft Taxiing

Stefano Zaninotto, Jason Gauci, Brian Zammit

Subject: Engineering, Aerospace Engineering Keywords: engineless taxiing; tow trucks; shortest path algorithm; Dijkstra

Online: 4 March 2024 (10:42:05 CET)

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Preprint ARTICLE | doi:10.20944/preprints202403.0069.v1

An Attitude Adaptive Integral Sliding Mode Control Algorithm with Feedforward Compensation Disturbance Observer for Microsatellites to Track High-Speed Moving Targets

Xinyan Yang, Lei Li, Yurong Liao, Zhaoming Li

Subject: Engineering, Aerospace Engineering Keywords: Microsatellite; Attitude Control; Moving Target Tracking; Disturbance Observer; Sliding Mode Control

Online: 1 March 2024 (18:25:20 CET)

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Preprint ARTICLE | doi:10.20944/preprints202402.1731.v1

Experimental and Numerical Investigation of Prepreg-RTM Co-Curing Molding Composite Bolted T-joint under Bending Load

Tao Zhang, Zhitao Luo, Kenan Li, Xiaoquan Cheng

Subject: Engineering, Aerospace Engineering Keywords: polymer composites; T-joint; prepreg-RTM co-curing molding; bending performance; finite element analysis; failure analysis

Online: 29 February 2024 (10:59:29 CET)

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Preprint REVIEW | doi:10.20944/preprints202402.1154.v1

3D Printing Modules for Self-Assembling Space Systems

Alex Ellery, Abdurr Elaskri

Subject: Engineering, Aerospace Engineering Keywords: additive manufacturing; 3D printed electric motors; self-assembly; reconfigurable robotics; flat-pack space structures; space debris resources

Online: 20 February 2024 (14:25:26 CET)

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Preprint ARTICLE | doi:10.20944/preprints202402.1051.v1

CFD Simulations and Phenomenological Modelling of Aerodynamic Stall Hysteresis of NACA 0018 Wing

Mohamed Sereez, Nikolay Abramov, Mikhail Goman

Subject: Engineering, Aerospace Engineering Keywords: Static Hysteresis; Dynamic Stall; Dual Time Stepping; OpenFOAM; Phenomenological Bifurcation Model

Online: 20 February 2024 (04:34:07 CET)

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Preprint ARTICLE | doi:10.20944/preprints202402.0968.v1

Info-Geometric Analysis of Gamma Distribution Manifold with Gamma Distribution Impact to Advance Satellite Earth Observations

Dr Ismail A Mageed

Subject: Engineering, Aerospace Engineering Keywords: Information Geometry(IG); Gamma Distribution (GD); Satellite Earth Observations (SEOs); Geodesic Equations (GEs)

Online: 19 February 2024 (14:27:50 CET)

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Preprint ARTICLE | doi:10.20944/preprints202402.0747.v1

Validation of a Mid-fidelity Numerical Approach for Wind Turbine Aerodynamics Characterization

Alberto Savino, Andrea Ferreri, Alex Zanotti

Subject: Engineering, Aerospace Engineering Keywords: Wind Turbine; Aerodynamics; Vortex Particle Method; Computational Fluid Dynamics

Online: 15 February 2024 (04:23:44 CET)

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Preprint REVIEW | doi:10.20944/preprints202402.0551.v1

Counter Drone Technology: A Review

Higinio Gonzalez-Jorge, Enrique Aldao, Gabriel Fontenla-Carrera, Fernando Veiga-López, Eduardo Balvís, Eduardo Ríos-Otero

Subject: Engineering, Aerospace Engineering Keywords: counter-UAS; drone threat; unmanned aircraft system; malicious drone

Online: 9 February 2024 (10:52:53 CET)

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Preprint ARTICLE | doi:10.20944/preprints202402.0426.v1

Impact Damage Prediction of Carbon Fiber Foam Sandwich Structure Based on Hashin Failure Criterion

Kang Yang, Yunpeng ZHANG, Yong YANG, Ji WANG, Zan LV, Dongqing HE

Subject: Engineering, Aerospace Engineering Keywords: carbon fiber foam sandwich structure； Hashin failure criterion； low-velocity impact；impact damage； finite element numerical simulation

Online: 7 February 2024 (12:14:49 CET)

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Preprint REVIEW | doi:10.20944/preprints202402.0382.v1

Materials Used in Space Shuttle: Evolution, Challenges, and Future Prospects - An Overview

Irfan Nazir Wani, Kanika Aggarwal, Swati Bishnoi, Pushpendra Shukla, Dineshkumar Harursampath, Ashish Garg

Subject: Engineering, Aerospace Engineering Keywords: Space Shuttle, Materials, Thermal Protection Systems, Structural Materials, Propulsion Systems, Re-entry, Nanotechnology, Composite Materials, Additive Manufacturing, Materials Science, Emerging Materials.

Online: 6 February 2024 (15:09:37 CET)

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The space shuttle, a revolutionary spacecraft that has played a significant role in human space exploration, was composed of various advanced materials that were carefully selected to meet the extreme demands of spaceflight. This review paper provides a comprehensive examination of the materials historically employed in the construction of space shuttles and explores the latest trends shaping the field. The evolution of space shuttle materials is traced from the inception of the space program to contemporary missions, highlighting key milestones, challenges, and breakthroughs. Emphasis is placed on the critical role that materials play in the overall performance, safety, and sustainability of space shuttles. The paper begins by elucidating the diverse requirements that materials must fulfill in the harsh and complex environment of space, encompassing extreme temperatures, radiation exposure, and mechanical stresses. A detailed analysis of the materials utilized in the fabrication of various shuttle components, such as thermal protection systems, structural elements, and propulsion systems, is presented. Special attention is given to the challenges posed by re-entry and the strategies employed to mitigate heat-related issues. Furthermore, the review explores recent innovations and emerging materials that are reshaping the landscape of space shuttle design. Advancements in nanotechnology, composite materials, and additive manufacturing are discussed in the context of their potential applications for enhancing shuttle performance and reducing mission costs. The paper also addresses the importance of sustainability in space exploration, exploring materials with lower environmental impact and improved recyclability. The review concludes with a forward-looking perspective on the future of materials, considering ongoing research, development, and the potential incorporation of cutting-edge technologies. Insights are provided into how the evolving landscape of materials science may influence the design and manufacturing processes of the next generation of space vehicles. This paper provides an overview of the materials used in the construction of the space shuttle, including their properties, applications, and challenges. The materials used in the space shuttle are critical in ensuring the safety, performance, and longevity of the spacecraft, and understanding their characteristics and performance in space is crucial for the advancement of aerospace engineering.

Preprint ARTICLE | doi:10.20944/preprints202402.0310.v1

Helicopter Planet Gear Rim Crack Diagnosis and Trending Using Cepstrum Editing Enhanced with Deconvolution

Nader Sawalhi, Wenyi Wang, David Blunt

Subject: Engineering, Aerospace Engineering Keywords: Planet Gear; Rim Crack; Cepstrum Editing; Liftering; Minimum Entropy Deconvolution (MED); Signal Synchronous Average (SSA)

Online: 6 February 2024 (09:18:17 CET)

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Preprint ARTICLE | doi:10.20944/preprints202402.0239.v1

Study on Non-spherical Deformation Velocity of a Single Cavitation Bubble

Qingmiao Ding, Xiaoman Li, Yanyu Cui, Junda Lv, Yunlong Shan, Yongqiang Liu

Subject: Engineering, Aerospace Engineering Keywords: cavitation bubble; free surface; rigid boundary; elastic boundary; non-spherical deformation

Online: 5 February 2024 (07:45:52 CET)

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Preprint ARTICLE | doi:10.20944/preprints202402.0049.v1

Numerical Investigation and Efficiency Analysis of Engine-Airframe Integration High speed Vehicle based on Fragment Computation

Lili Chen, Jianxia Liu, Juntao Zhang, Peng Chen, Kai Zhou, Anping Wu, Lijun Jia

Subject: Engineering, Aerospace Engineering Keywords: Efficiency Analysis; High speed vehicle; Fragment Computation; Reaction; Pressure distribution

Online: 1 February 2024 (11:29:27 CET)

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Preprint ARTICLE | doi:10.20944/preprints202401.2000.v1

Computational Analysis of Various Winglet Design Types on a Boeing 737 Aircraft

Gideon Dunmoye

Subject: Engineering, Aerospace Engineering Keywords: SOLIDWORKS; lift-to-drag ratio; winglet; wingtip devices; lift; drag; vortices; pressure; angle of attack

Online: 29 January 2024 (08:47:52 CET)

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Preprint ARTICLE | doi:10.20944/preprints202401.1636.v1

Lateral-Directional Aerodynamic Optimization of a Tandem Wing UAV Using CFD Analyses

Ivan Kostic, Aleksandar Simonovic, Olivera Kostic, Dusan Ivkovic, Dragoljub Tanovic

Subject: Engineering, Aerospace Engineering Keywords: unmanned aerial vehicle UAV; tandem wing; CFD calculations; lateral-directional aerodynamic optimization, artificial intelligence AI knowledge database

Online: 23 January 2024 (09:14:28 CET)

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Preprint ARTICLE | doi:10.20944/preprints202401.1507.v1

Estimation of Axial Young’s Modulus of Fibrous Composites Using Finite Element Analysis

Calin Itu, Maria Luminita Scutaru, Sorin Vlase

Subject: Engineering, Aerospace Engineering Keywords: Young’s modulus; longitudinal vibration; composite; FEM; fiber reinforced material

Online: 19 January 2024 (12:17:09 CET)

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Preprint ARTICLE | doi:10.20944/preprints202401.1368.v1

Analysis of Blade Aspect Ratio Influence on High-Speed Axial Compressor Performance

Lucilene Moraes da Silva, Tomas Grönstedt, Carlos Xisto, Luiz Henrique Lindquist Whitacker, Cleverson Bringhenti, Marcus Lejon

Subject: Engineering, Aerospace Engineering Keywords: aspect ratio, high-speed compressor, multi-objective optimality, surge margin.

Online: 18 January 2024 (12:03:00 CET)

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Preprint ARTICLE | doi:10.20944/preprints202401.1411.v1

Unsteady Subsonic/Supersonic Flow Simulations in 3D Unstructured Grids over an Acoustic Cavity

Guillermo Araya

Subject: Engineering, Aerospace Engineering Keywords: URANS; SST; SAS; turbulence model; compressible flow; unstructured grid; complex geometry

Online: 18 January 2024 (11:37:31 CET)

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Preprint ARTICLE | doi:10.20944/preprints202401.1213.v1

Deep Deterministic Policy Gradient (DDPG) Agent-Based Sliding Mode Control for Quadrotor Attitudes

Wenjun Hu, Yueneng Yang, Zhiyang Liu

Subject: Engineering, Aerospace Engineering Keywords: quadrotor; attitude control; deep deterministic policy gradient; gain adjusted; sliding mode control

Online: 16 January 2024 (09:09:33 CET)

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Preprint ARTICLE | doi:10.20944/preprints202401.1207.v1

Research on Deployment Process Dynamics and Vibration for Replaceable Interface Mast

Tongliang Liu, Jianmin Wen

Subject: Engineering, Aerospace Engineering Keywords: flexible interface; unfolding behavior; replaceable mast; dynamic properties

Online: 16 January 2024 (08:38:26 CET)

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Preprint ARTICLE | doi:10.20944/preprints202401.1077.v1

Low-Thrust Trajectory Optimization for Earth-Mars-Jupiter Gravity-Assist Spacecraft Mission

Mohammadreza Saghamanesh, Weidong Hu, Vahid Rastinasab

Subject: Engineering, Aerospace Engineering Keywords: Earth-Mars-Jupiter Gravity-Assist; Low-Thrust Spacecraft Mission; trajectory optimization; homotopy method; fuel-optimal control

Online: 15 January 2024 (06:18:43 CET)

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Preprint ARTICLE | doi:10.20944/preprints202401.0827.v1

Fluidic Oscillator Performance under Several Mixing Chamber Dimensional Modifications

Kavoos Karimzadegan, Masoud Mirzaei, Josep M. Bergadà

Subject: Engineering, Aerospace Engineering Keywords: Fluidic oscillators design; Computational Fluid Dynamics (CFD); flow control; feedback channel performance

Online: 11 January 2024 (02:35:53 CET)

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Preprint ARTICLE | doi:10.20944/preprints202401.0614.v1

Trajectory Tracking Control for Quadrotors Using Adaptive Integral Terminal Sliding Mode under External Disturbances

Shipeng Jiao, Jun Wang, Yuchen Hua, Ye Zhuang, Xuetian Yu

Subject: Engineering, Aerospace Engineering Keywords: quadrotor UAV; trajectory tracking control; adaptive estimation; backstepping control; sliding mode control; dead zone technique; saturation function

Online: 8 January 2024 (11:28:05 CET)

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Preprint ARTICLE | doi:10.20944/preprints202401.0536.v1

Tensile and Compressive Properties of woven fabric CFRP Laminates Containing Three-Dimensional Microvascular Channels

Ziqian An, Xiaoquan Cheng, Dafang Zhao, Yihao Ma, Xin Guo, Yujia Cheng

Subject: Engineering, Aerospace Engineering Keywords: self-healing composites, woven fabric CFRP, microvascular, experimental test, finite element analysis

Online: 8 January 2024 (10:00:50 CET)

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Preprint ARTICLE | doi:10.20944/preprints202401.0612.v1

Development of BVLOS and Night Flight Safety Criteria through VLOS and Night Flight Testing

Gyou Beom Kim, Jung Hoi Jin, Hee Jeong Choi, In Je Cho

Subject: Engineering, Aerospace Engineering Keywords: BVLOS; VLOS; night flight; UAV; drone

Online: 8 January 2024 (09:43:57 CET)

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Preprint ARTICLE | doi:10.20944/preprints202401.0348.v1

Towards Structural and Aeroelastic Similarity in Scaled Wing Models: Development of an Aeroelastic Optimization Framework

Evangelos Filippou, Spyridon Kilimtzidis, Athanasios Kotzakolios, Vassilis Kostopoulos

Subject: Engineering, Aerospace Engineering Keywords: Aeroelasticity; Structural optimization; Low-fidelity aerodynamics; Aeroelastic scaling; Sizing optimization; Layout optimization

Online: 4 January 2024 (07:26:12 CET)

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The pursuit of more efficient transport has led engineers to develop a wide variety of 1 aircraft configurations with the aim of reducing fuel consumption and emissions. However, these 2 innovative designs introduce significant aeroelastic couplings that can potentially lead to structural 3 failure. Consequently, aeroelastic analysis and optimization has become an integral part of modern 4 aircraft design. In addition, aeroelastic testing of scale models is a critical phase in aircraft devel- 5 opment, requiring accurate prediction of aeroelastic behaviour during scale model construction to 6 reduce costs and mitigate risks associated with full-scale flight testing. Achieving a high degree of 7 similarity between the stiffness, mass distribution and flow field characteristics of scaled models 8 and their full-scale counterparts is of paramount importance. However, achieving similarity is 9 not always straightforward due to the variety of configurations of modern lightweight aircraft, as 10 identical geometry cannot always be directly scaled down. This configuration diversity has a direct 11 impact on the aeroelastic response, necessitating the use of computational aeroelasticity tools and 12 optimization algorithms. This paper presents the development of an aeroelastic scaling framework 13 using multidisciplinary optimization. Specifically, a parametric Finite Element Model (FEM) of the 14 wing is created, incorporating parameterisation of both thickness and geometry, primarily using 15 shell elements. Aerodynamic loads are calculated using the Doublet Lattice Method (DLM) em- 16 ploying twist and camber correction factors, and aeroelastic coupling is established using infinite 17 plate splines. The aeroelastic model is then integrated within an Ant Colony optimization (ACO) 18 algorithm to achieve static and dynamic similarity between the scaled model and the reference wing. 19 A notable contribution of this work is the incorporation of internal geometry parameterisation into 20 the framework, increasing its versatility and effectiveness.

Preprint ARTICLE | doi:10.20944/preprints202401.0029.v1

Rectangular Natural Feature Recognition and Pose Measurement Method for Non-Cooperative Spacecraft

Fengxu Wang, Wenfu Xu, Lei Yan, Chengqing Xie, Weihua Pu

Subject: Engineering, Aerospace Engineering Keywords: Non-cooperative targets; Parallelogram fitting; Pose measurement; Stereovision; Rectangle

Online: 3 January 2024 (08:45:39 CET)

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Preprint ARTICLE | doi:10.20944/preprints202401.0009.v1

A Performance Simulation Methodology of Whole Turboshaft Engine Based on ThroughFlow Modelling

Shuo Zhang, Aotian Ma, Teng Zhang, Ning Ge, Xing Huang

Subject: Engineering, Aerospace Engineering Keywords: whole turboshaft engine; component verification; throughflow simulation; co-working equations; ground throttle characteristic

Online: 3 January 2024 (02:14:40 CET)

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Preprint ARTICLE | doi:10.20944/preprints202312.2334.v1

Multiphysics Modeling of a Synthetic Jet Actuator in Operation

Matthew G Butler, Alis Ekmekci, Pierre Edward Sullivan

Subject: Engineering, Aerospace Engineering Keywords: Synthetic Jets; Flow Control; Multiphysics Modeling

Online: 30 December 2023 (09:02:15 CET)

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Preprint ARTICLE | doi:10.20944/preprints202312.1948.v1

Performance Enhancement and Evaluation of a Vector Tracking Receiver using Adaptive Tracking Loops

Ning Gao, Xiyuan Chen, Zhe Yan, Zhiyuan Jiao

Subject: Engineering, Aerospace Engineering Keywords: vector tracking; tracking loop; nonlinear Kalman filter; GNSS software-defined receiver

Online: 28 December 2023 (02:15:44 CET)

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Preprint ARTICLE | doi:10.20944/preprints202312.1897.v1

A Novel Velocity Estimation and Compensation Approach for Moving Target in Stepped Frequency Radar Based on Fractional Fourier Transform

Bo Peng, Qile Chen, Qi Zhang, Jing Zhao, Chao Wang, Ruiheng Zhang

Subject: Engineering, Aerospace Engineering Keywords: Stepped-frequency radar; Velocity estimation; Fractional Fourier transform (FrFT); Chirp rate; Golden section search (GSS)

Online: 26 December 2023 (07:47:35 CET)

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Preprint ARTICLE | doi:10.20944/preprints202312.1876.v1

Numerical Simulation of Flow around a Pitching Airfoil with Combined Morphing Leading Edge and Trailing Edge Wing

Musavir Bashir, Mir Hossein Negahban, Ruxandra Mihaela Botez, Tony Wong

Subject: Engineering, Aerospace Engineering Keywords: Morphing; Unsteady Parameterization; Combined Morphing Leading Edge and Trailing Edge (CoMpLETE); Flow Control

Online: 25 December 2023 (12:58:25 CET)

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An integrated approach to active flow control is proposed by finding both the drooping leading edge and the morphing trailing edge for flow management. This strategy aims to manage flow separation control by utilizing the synergistic effects of both control mechanisms, which we call the Combined Morphing Leading Edge and Trailing Edge (CoMpLETE) technique. This design is inspired by a bionic porpoise nose and the flap movements of the cetacean species. The motion of this mechanism achieves a continuous, wave-like, variable airfoil camber. The dynamic motion of the airfoil's upper and lower surface coordinates in response to unsteady conditions is achieved by combining the thickness-to-chord (t/c) distribution with the time-dependent camber line equation. A parameterization model was constructed to mimic the motion around the morphing airfoil at various deflection amplitudes at stall angle of attack and morphing actuation start times. The mean properties and qualitative trends of the flow phenomena are captured by the transition-SST (Shear Stress Transport) model. The effectiveness of the dynamically morphing airfoil as a flow control approach is evaluated by obtaining the flow field data, such as velocity streamlines, vorticity contours, and aerodynamic forces. Different cases are investigated for the CoMpLETE morphing airfoil, which evaluates the airfoil’s parameters, such as its morphing location, deflection amplitude, and morphing starting time. The morphing airfoil’s performance is analyzed to provide further insights into the dynamic lift and drag force variations at pre-defined deflection frequencies of 0.5 Hz, 1 Hz, and 2 Hz. The findings demonstrate that adjusting the airfoil camber reduces streamwise adverse pressure gradients, thus preventing significant flow separation. Although the trailing edge deflection and its location along the chord influence the generation and separation of the Leading-Edge Vortex (LEV), these results show that the combined effect of the morphing leading edge and trailing edge has the potential to mitigate flow separation. The morphing airfoil successfully contributes to the flow reattachment and significantly increases the maximum lift coefficient (c_(l,max))). This work also broadens its focus to investigate the aerodynamic effects of a dynamically morphing leading and trailing edge, which seamlessly transitions along the side edges. The aerodynamic performance analysis is investigated across varying morphing frequencies, amplitudes, and actuation times.

Preprint ARTICLE | doi:10.20944/preprints202312.1547.v1

Physics-Based Aircraft Dynamics Identification Using Genetic Algorithms

Raymundo Peña-García, Rodolfo Daniel Velázquez-Sánchez, Cristian Gómez-Daza-Argumedo, Jonathan Omega Escobedo-Alva, Ricardo Tapia-Herrera, Jesús Alberto Meda-Campaña

Subject: Engineering, Aerospace Engineering Keywords: Physical-based modelling; system identification; transition matrix; genetic algorithm.

Online: 20 December 2023 (13:49:48 CET)

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Preprint ARTICLE | doi:10.20944/preprints202312.0879.v1

Modelling of Fatigue Delamination Growth and Prediction of Residual Tensile Strength of Thermoplastic Coupons

Niki Tsivouraki, Konstantinos Tserpes, Ioannis Sioutis

Subject: Engineering, Aerospace Engineering Keywords: Thermoplastic composites; Delamination; Residual strength; Cohesive zone modeling; Progressive damage modeling; Finite element analysis

Online: 12 December 2023 (10:44:24 CET)

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Preprint ARTICLE | doi:10.20944/preprints202312.0787.v1

Complex Dynamical Orbit Re-entry Navigation and Control

David Cole, Timothy Sands

Subject: Engineering, Aerospace Engineering Keywords: convex optimization; trajectory optimization; path planning; kinematics

Online: 12 December 2023 (05:08:34 CET)

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Preprint ARTICLE | doi:10.20944/preprints202312.0516.v1

Development and Validation of a Compressible Reacting Gas-Dynamic Flow Solver for Supersonic Combustion

Anvar Gilmanov, Ponnuthurai Gokulakrishnan, Michael S Klassen

Subject: Engineering, Aerospace Engineering Keywords: Scramjet, Gas Dynamics, Supersonic Combustion, Turbulence-Combustion Interaction, Compressible Solver, High-Speed Flows, Large Eddy Simulation (LES).

Online: 7 December 2023 (11:22:08 CET)

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Preprint ARTICLE | doi:10.20944/preprints202312.0059.v1

Large Eddy Simulation of Pulsed Film Cooling with Dielectric Barrier Discharge Plasma Actuator

Shen Zhou, Beimeng Hu, Guozhan Li, Hongjun Zhang

Subject: Engineering, Aerospace Engineering Keywords: Pulsed film ; cooling; Film cooling efficiency; ; Coherent structure; large eddy simulation

Online: 1 December 2023 (07:46:26 CET)

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Preprint ARTICLE | doi:10.20944/preprints202311.1983.v1

Numerical and Experimental Study of Flutter in a Realistic Labyrinth Seal

Oscar Bermejo, Juan Manuel Gallardo, Adrián Sotillo, Arnau Altuna Benito, Roberto Alonso, Andoni Puente

Subject: Engineering, Aerospace Engineering Keywords: aeroelasticity; flutter; labyrinth seal; CFD; testing

Online: 30 November 2023 (11:24:32 CET)

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Preprint ARTICLE | doi:10.20944/preprints202311.1970.v1

Effects of Model Specific Parameters on the Development of Custom Module in PX4 Autopilot Software-In-The-Loop

Abera Tullu, Sunghun Jung, Sangchul Lee, Sangho Ko

Subject: Engineering, Aerospace Engineering Keywords: Software-in-the-loop; custom module; virtual environment; Gazebo plugins

Online: 30 November 2023 (10:43:17 CET)

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Preprint ARTICLE | doi:10.20944/preprints202311.1853.v1

Design and Optimization of Combustion Chamber for Gas Turbine Engine

Nandan Kumar Jha, Bhakti Sachin Malve, Rohit Vinod Gawde

Subject: Engineering, Aerospace Engineering Keywords: Aviation; Marine propulsion; Combustion chamber; high power to fuel ratio; Gas turbine engines

Online: 29 November 2023 (11:08:52 CET)

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Preprint ARTICLE | doi:10.20944/preprints202311.1657.v1

Relative Dynamics and Control of Satellite Formation Flying Representing the Synthetic Aperture Telescope on Geostationary Orbit

Zaure Rakisheva, Anna Sukhenko, Nursultan Doszhan, Gulama-Garip Alisher Ibrayev, Nazgul Kaliyeva, Shinichi Nakasuka, Algazy Zhauyt

Subject: Engineering, Aerospace Engineering Keywords: forest-fire monitoring; synthetic aperture telescope; satellite formation flying; geostationary orbit; dynamics and control; numerical analysis

Online: 27 November 2023 (07:12:36 CET)

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Preprint ARTICLE | doi:10.20944/preprints202311.1611.v1

Testing Structural Elements under Multiaxial Loading: A Numerical Model of the Bench to Understand and Predict Complex Boundary Conditions

Florent Grotto, Oscar Peta, Christophe Bouvet, Bruno Castanié, Joël Serra

Subject: Engineering, Aerospace Engineering Keywords: composite structure; airworthiness certification; pyramid of tests; intermediate scale experiment; multiaxial loading

Online: 27 November 2023 (03:11:14 CET)

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Preprint ARTICLE | doi:10.20944/preprints202311.1589.v1

Experiments of Lift-Bending Response on a Slender UAV Wing Structure with Control Surface under Extreme Flow Turbulence

Wolduamlak Ayele, Victor Maldonado, Siva Parameswaran

Subject: Engineering, Aerospace Engineering Keywords: Slender wing structures; structural dynamics; aerodynamics; high turbulence intensity; particle image velocimetry

Online: 26 November 2023 (06:16:17 CET)

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Preprint ARTICLE | doi:10.20944/preprints202311.1303.v1

Experimental Research and Numerical Modelling of the Cold Forming Process of the Inconel 625 Alloy Sheets Using Flexible Punch

Maciej Balcerzak, Krzysztof Żaba, Marcin Hojny, Sandra Puchlerska, Łukasz Kuczek, Tomasz Trzepieciński, Vit Novák

Subject: Engineering, Aerospace Engineering Keywords: elastomeric materials; finite element method; Inconel 625; nickel alloys; sheet metal forming

Online: 21 November 2023 (10:48:35 CET)

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Preprint COMMUNICATION | doi:10.20944/preprints202311.1254.v1

Downlink Analysis of a Low-Earth Orbit Satellite Considering an Airborne Interference Source Moving on Various Trajectory

Eunjung Kang, Youngju Park, Junghoon Kim, Hosung Choo

Subject: Engineering, Aerospace Engineering Keywords: LEO satellite; link budget; antenna radiation patterns; interference situation; relative angle; coordinate system conversion; J/S ratio

Online: 20 November 2023 (15:26:58 CET)

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Preprint ARTICLE | doi:10.20944/preprints202311.0856.v1

Techno-Economic Review of Low Carbon Energies Based on Electricity for Air Mobility.

Jean-Baptiste Jarin, Stéphane Beddok, Carole Haritchabalet

Subject: Engineering, Aerospace Engineering Keywords: air mobility; efuel; hydrogen; battery electric; CO₂

Online: 14 November 2023 (16:54:19 CET)

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Preprint ARTICLE | doi:10.20944/preprints202311.0932.v1

Combination of Advanced Actuator Line/Disk Model and a High-Order Unstructured Finite Volume Solver for Helicopter Rotors

Minghao Yang, Shu Li, Weicheng Pei

Subject: Engineering, Aerospace Engineering Keywords: actuator line model; actuator disk model; tip loss correction; high-order finite volume unstructured solver

Online: 14 November 2023 (15:15:25 CET)

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Preprint ARTICLE | doi:10.20944/preprints202311.0787.v1

Reducing Energy Consumption in CubeSat Missions: The Integrated Antenna Approach

Gulama-Garip Alisher Ibrayev, Nursultan Meirambekuly, Beibit Karibayev, Timur Namazbayev, Sabyrzhan Orynbassar, Anna Sukhenko, Amirkhan Temirbayev, Algazy Zhauyt

Subject: Engineering, Aerospace Engineering Keywords: cubesat; integrated antenna systems; remote sensing; attitude control; energy budget

Online: 13 November 2023 (08:52:33 CET)

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Preprint ARTICLE | doi:10.20944/preprints202311.0639.v1

Critical Sample Size Analysis on Uncertainty Aerodynamic Evaluation for Compressor Blade With Stagger Angle Errors

Haohao Wang, Limin Gao, Baohai Wu

Subject: Engineering, Aerospace Engineering Keywords: compressor blade; manufacturing uncertainty; stagger angle; uncertainty quantification; limited samples; polynomial chaos

Online: 9 November 2023 (11:23:10 CET)

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Preprint ARTICLE | doi:10.20944/preprints202311.0605.v1

Interpretation of Gravitational Data from Past Martian Missions

Vincent Affatato

Subject: Engineering, Aerospace Engineering Keywords: Mars; Geophysics; Bouguer; Gravity Models; Planetary Interiors; Crustal Variations

Online: 9 November 2023 (10:55:56 CET)

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Preprint ARTICLE | doi:10.20944/preprints202311.0493.v1

Modelling Method for Aeroelastic Low Engine Order Excitation Originating from Upstream Vanes’ Geometrical Variability

Marco Gambitta, Bernd Beirow, Sven Schrape

Subject: Engineering, Aerospace Engineering Keywords: Aeroelasticity; Low Engine Order; Geometrical Variability

Online: 8 November 2023 (06:43:58 CET)

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Preprint REVIEW | doi:10.20944/preprints202311.0344.v1

Turbomachinery Noise Review

Stéphane Moreau, Michel Roger

Subject: Engineering, Aerospace Engineering Keywords: aeroacoustics; turbomachinery noise; analytical modeling; computational aeroacoustics

Online: 6 November 2023 (10:32:44 CET)

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Preprint ARTICLE | doi:10.20944/preprints202311.0323.v1

Optimal Control Law for the Flutter Suppression of a Wing Section in Compressible Flows

Álvaro Muñoz, Pablo García-Fogeda

Subject: Engineering, Aerospace Engineering Keywords: aeroservoelasticity; active flutter suppression; unsteady aerodynamics in the laplace domain; H-infinity

Online: 6 November 2023 (10:28:47 CET)

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Preprint ARTICLE | doi:10.20944/preprints202311.0136.v1

Effect of Hole Size on Open Hole Tensile (OHT) and Flexural Strength (OHF) of Aramid-Basalt Fibre Reinforced Polymer Composites

Oshin Fernandes, Jyoti Dutta, Yogeesha Pai, Mahesha G T, Ravishanker Baliga

Subject: Engineering, Aerospace Engineering Keywords: Open hole tensile test; Hybrid composite; Damage mechanism; Hole diameter; SEM

Online: 2 November 2023 (09:10:47 CET)

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Preprint ARTICLE | doi:10.20944/preprints202310.2064.v1

A Robust Flexible Model for Satellite Equipment Layout Optimisation

Masoud Hekmatfar, Mohammad Reza Mohammad Aliha, Mir saman Pishvaee, Tomasz Sadowski

Subject: Engineering, Aerospace Engineering Keywords: Satellite components/equipment 3D Layout; Uncertainty; Proposed Robust Flexible Programming Model (RFPM); Optimization Algorithm

Online: 31 October 2023 (12:13:34 CET)

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Preprint ARTICLE | doi:10.20944/preprints202310.1825.v1

A SiPM Based Camera for the Terzina Telescope on Board the Nuses Space Mission

Leonid Burmistrov

Subject: Engineering, Aerospace Engineering Keywords: SiPM; UHECR; Cherenkov telescope

Online: 30 October 2023 (06:32:13 CET)

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Preprint ARTICLE | doi:10.20944/preprints202310.1373.v1

The Fatigue Response's Fingerprint of Composite Materials Subjected to Constant and Variable Amplitude Loadings

Alberto D' Amore, Luigi Grassia

Subject: Engineering, Aerospace Engineering Keywords: Fatigue; Residual strength; Stress ratio; Damage rule

Online: 20 October 2023 (16:22:09 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202310.1282.v1

Dynamic Behavior Modeling of Natural Rubber/Polybutadiene Rubber-Based Hybrid Magnetorheological Elastomer Sandwich Composite Structures

Ahobal .N, Lakshmi Pathi J, Sakthivel G, Mohanraj Thangamuthu, Jegadeeshwaran Rakkiyannan, Yogesh Jayant Bhalerao

Subject: Engineering, Aerospace Engineering Keywords: hybrid MRE; sandwich structures; smart structures; dynamic behavior modeling; vibration; polymer composites

Online: 20 October 2023 (07:53:25 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202310.1234.v1

Enhancing Real-Time Control of Brushless DC Motors for More Electric Aircraft

Khairy Sayed, Mahmoud Aref, Heba El-Zohri, Adel Ahmed

Subject: Engineering, Aerospace Engineering Keywords: brushless direct current motors; current control; pulse width modulation; speed control of BLDC motors; more electric aircraft

Online: 19 October 2023 (09:49:33 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202310.1230.v1

Improvement of Air Traffic Controller Scheduling Based on Multi-mode Fatigue Information

Lin Xu, Shanxiu Ma, Zhiyuan Shen, Shiyu Huang, Ying Nan

Subject: Engineering, Aerospace Engineering Keywords: fatigue recognition; Air traffic controller; Feature fusion; Multi-mode; scheduling

Online: 19 October 2023 (08:42:59 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202310.1189.v1

Autonomous Optimal Absolute Orbit Keeping Through Formation-Flying Techniques

Ahmed Mahfouz, Gabriella Gaias, D. M. K. K. Venkateswara, Holger Voos

Subject: Engineering, Aerospace Engineering Keywords: Spacecraft; Orbit keeping; Model predictive control; Low-thrust; Relative orbital elements; Eccentricity vector; Inclination vector

Online: 19 October 2023 (04:46:14 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202310.1145.v1

Bilinear Interpolation of Three-Dimensional Gain-Scheduled Autopilots

Sung Mo Koo, Timothy Sands

Subject: Engineering, Aerospace Engineering Keywords: gain-scheduled autopilots; nonlinear control; bilinear interpolation; control and guidance; control gains; three-dimensional lookup table (3D-LUT)

Online: 18 October 2023 (11:37:25 CEST)

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Preprint REVIEW | doi:10.20944/preprints202310.0921.v1

Recent Advances in Space Debris Removal Techniques; A study

Ayan Deghuria, Richeek Debnath, Varsha G, Khushi Raheja

Subject: Engineering, Aerospace Engineering Keywords: Space Debris

Online: 16 October 2023 (09:03:23 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202310.0900.v1

The Agricultural Application of Full Polar and Quantification S-band SAR Subsystem of Chinese High-Resolution Aerial Remote Sensing System

Yabo Liu, Luhao Wang, Shuang Zhu, Xiaojie Zhou, Jia Liu

Subject: Engineering, Aerospace Engineering Keywords: Full polarimetric SAR; S-band; Agricultural application; Quantification

Online: 13 October 2023 (19:02:55 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202310.0871.v1

Modeling and Prediction of Thermal Deformation Errors in Fiber Optic Gyroscopes Based on the TD-Model

Jintao Xu, Ailing Tian, Hui Liu, Ying Liu

Subject: Engineering, Aerospace Engineering Keywords: fiber optic gyroscope; thermal errors; prediction model; overfitting; biased regression

Online: 13 October 2023 (08:18:22 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202310.0506.v1

Evaluation of Civil-Military Integrated Aviation Maintenance and Guarantee Capability Based on Intuitive Fuzzy Entropy and Normal Grey Cloud Models

Wei Lian, Lei Zhang, Hongwei Yue, Zhipeng Qi

Subject: Engineering, Aerospace Engineering Keywords: intuitionistic fuzzy entropy; normal grey cloud model; civil-military integration; maintenance and guarantee; capability evaluation

Online: 9 October 2023 (15:21:29 CEST)

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Preprint REVIEW | doi:10.20944/preprints202310.0541.v1

Review and Assessment on Fatigue Delamination Damage of Laminated Composite Structures

Jinghui Deng, Jie Zhou, Tangzhen Wu, Zhengliang Liu, Zhen Wu

Subject: Engineering, Aerospace Engineering Keywords: Laminated structures; fatigue delamination; phenomenological model; Paris law; cohesive element; numerical methods

Online: 9 October 2023 (13:05:42 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202310.0418.v1

Propeller Aerodynamic Design and Optimization

saheed adebimpe

Subject: Engineering, Aerospace Engineering Keywords: propeller design; aerodynamics; propulsion; performance; airflow dynamics; thrust; lift; torque; airfoil; geometry; blade element theory; optimization; operational conditions

Online: 8 October 2023 (07:25:23 CEST)

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This research endeavors to illuminate the path toward efficient and optimized propeller design by delving into the realm of aerodynamics. Propellers, as vital mechanical marvels, constitute the core of numerous propulsion systems, spanning from aircraft and marine vessels to wind turbines. The pursuit of enhanced propeller efficiency and performance holds paramount importance in industries where propulsion assumes a critical role, underscoring the indispensable need for a profound understanding of aerodynamics. Through meticulously crafted theoretical insights and their practical applications, this study embarks on a journey into the fascinating realm of propeller aerodynamics. While the paper primarily addresses the aerodynamic aspects of propeller design and optimization, it serves as a foundational guide for those seeking to comprehend the intricacies of propeller engineering.The research journey commences with an in-depth exploration of the fundamental principles governing propeller performance. It unveils the intricate dynamics of airflow surrounding propeller blades, shedding light on their proficiency in generating thrust, lift, and torque. The bedrock of the theoretical insights is a comprehensive analysis encompassing airfoil profiles, blade geometry, and the underlying principles of blade element theory. In navigating the ensuing pages, the study embarks on the task of demystifying the intricate methods and calculations that propel the design and optimization of propellers. Leveraging cutting-edge methodologies, the research systematically assesses the aerodynamic characteristics of propellers across various operational conditions. These invaluable insights empower the tailoring of propeller designs with precision, aligning them seamlessly with specific performance objectives. The aim is not only to impart a comprehensive understanding of propeller aerodynamics but also to provide actionable insights for engineers and researchers striving to enhance propeller efficiency. This research endeavor serves as a guiding light for both propeller enthusiasts and professionals alike. It not only enriches the broader discourse on propeller technology but also equips readers with the requisite knowledge and tools to embark on their own quests for optimized propeller design. As propulsion technologies continue their evolution, the steadfast principles elucidated herein will persist, guiding future innovations and advancements in the realm of propeller engineering. This paper serves as a profound resource, offering new researchers a comprehensive understanding of propellers and their intricate design processes.

Preprint COMMUNICATION | doi:10.20944/preprints202310.0263.v1

Maximum thrust nozzle based on height constraint

Bowen Huang, Jinglei Xu, Kaikai Yu

Subject: Engineering, Aerospace Engineering Keywords: maximum thrust theory; MOC; height constraints; nozzle; scramjet

Online: 5 October 2023 (10:13:20 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202310.0245.v1

New Insights into Flow for a Low-Bypass-Ratio Transonic Fan with Optimized Rotor

Mingjun Liu, Zhenjiu Zhang, Zhuoming Liang, Haibing Xiao, Huanlong Chen, Xianqing Yang, Changxiao Shao

Subject: Engineering, Aerospace Engineering Keywords: low-bypass-ratio transonic fan; aerodynamic optimization; vortex dynamics; secondary flow; shock wave

Online: 5 October 2023 (02:12:19 CEST)

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Preprint REVIEW | doi:10.20944/preprints202309.2122.v1

The Use of Spatially Multi-Component Plasma Structures and Combined Energy Deposition for High-Speed Flow Control. A Selective Review

Olga A. Azarova, Oleg V. Kravchenko

Subject: Engineering, Aerospace Engineering Keywords: supersonic/hypersonic flow control; energy source; bow shock wave; drag force; lift force; boundary layer; separation area; filamentary plasma; plasma actuator; Richtmyer–Meshkov instability; pulsing flow mode; damping flow pulsations

Online: 30 September 2023 (10:30:53 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202309.2162.v1

Numerical Investigation of the Effect of Free Flow Turbulence Intensity and Reynolds Number on the Heat Transfer Rate of Gas Turbine Blade with Internal Cooler

Sanaz Dehghaniyan

Subject: Engineering, Aerospace Engineering Keywords: heat transfer; gas turbine; turbulence intensity; Reynolds number; boundary layer

Online: 30 September 2023 (10:25:27 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202309.1994.v1

Integrating GRU with Kalman Filter to Enhance Visual Inertial Odometry Performance in Complex Environments

Tarafder Elmi Tabassum, Zhengjia Xu, Ivan Petrunin, Zeeshan Rana

Subject: Engineering, Aerospace Engineering Keywords: GNSS; visual inertial odometry; failure modes; GRU-aided ESKF; complex environments

Online: 28 September 2023 (10:28:57 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202309.1914.v1

Effect of Variation of Location of the Blowing on the Aerodynamic Characteristics over the Delta Wing

Sugandh Gupta, Sanjeev Kumar, Rakesh Kumar

Subject: Engineering, Aerospace Engineering Keywords: vortex breakdown; jet momentum coefficient; sweep angle; delta wing; blowing

Online: 28 September 2023 (03:35:07 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202309.1805.v1

Durability Analysis of CFRP Adhesive Joints: A Study Based on Entropy Damage Modelling Using FEM

Yutong Li, Huachao Deng, Maruri Takamura, Jun Koyanagi

Subject: Engineering, Aerospace Engineering Keywords: numerical simulation; composite laminates; entropy-based strength degradation; CFRP transverse cracking behavior; fatigue

Online: 27 September 2023 (05:41:31 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202309.1812.v1

The Impact of Data Injection on Predictive Algorithm Developed Within Electrical Manufacturing Engineering in the Context of Aerospace Cybersecurity

Jorge Bautista-Hernández, María Ángeles Martín-Prats

Subject: Engineering, Aerospace Engineering Keywords: predictive algorithms cybersecurity; machine learning; advanced persistent threats

Online: 27 September 2023 (02:38:03 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202309.1667.v1

A Practical Approach for Real-Time DOV Compensation in an Embedded Computer of an INS Using Multi-Layer Perceptron

Hyunseok Kim, Hyungsoo Kim, Yunhyuk Choi, Yunchul Cho, Chansik Park

Subject: Engineering, Aerospace Engineering Keywords: inertial navigation system (INS); earth gravity model (EGM); deflection of vertical (DOV); multi-layer perceptron (MLP)

Online: 25 September 2023 (11:22:21 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202309.1440.v1

Numerical Investigation of Geometry Effect Channel on Fuel Source Flow Distribution in Micro Gas Turbine Annular Combustor

Sebastian Andrew, Sanaz Dehghaniyan

Subject: Engineering, Aerospace Engineering Keywords: Micro gas turbine, fuel supply nozzle, combustion chamber, fuel distribution.

Online: 21 September 2023 (08:53:30 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202309.1460.v1

Distance-Scalar Disturbance Observer-based Parallel Approaching Guidance Using Finite-time Prescribed Performance

Haoxuan Sun, Kenan Yong, Yaohua Shen

Subject: Engineering, Aerospace Engineering Keywords: Finite-time prescribed performance control; nonlinear disturbance observer; parallel approaching guidance

Online: 21 September 2023 (07:40:36 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202309.1162.v1

Temperature Dependency Model in Pressure Measurement for the Motion-Capturing Pressure-Sensitive Paint Method

Daiki Kurihara, Hirotaka Sakaue

Subject: Engineering, Aerospace Engineering Keywords: Pressure-Sensitive Paint; Temperature dependency; Motion-capturing PSP method; Analytical model

Online: 18 September 2023 (09:48:05 CEST)

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