Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Estimation of Extreme Loads of the Mi-24 Helicopter During Maneuvers Using Simulation Method

Version 1 : Received: 30 December 2021 / Approved: 10 January 2022 / Online: 10 January 2022 (15:43:44 CET)

How to cite: Kowaleczko, G.; Piatkowski, L. Estimation of Extreme Loads of the Mi-24 Helicopter During Maneuvers Using Simulation Method. Preprints 2022, 2022010128 (doi: 10.20944/preprints202201.0128.v1). Kowaleczko, G.; Piatkowski, L. Estimation of Extreme Loads of the Mi-24 Helicopter During Maneuvers Using Simulation Method. Preprints 2022, 2022010128 (doi: 10.20944/preprints202201.0128.v1).

Abstract

The aim of the study is to assess the loads that are transferred from the main rotor and the tail rotor to the helicopter fuselage. These loads change in the various phases of the transient flight as a result of the variable control of the maneuver and as a result of the variable flow around the blades. The knowledge of the loads allows for the proper selection of the level of excitations that should load the fuselage structure during fatigue and strength tests. The simulation model describing the helicopter flight is discussed. This model takes into account the motion of each blade relative to its hinges. Results are shown for two maneuvers - pullup/pushover and diving. The values of extreme loads transferred to the fuselage were obtained.

Keywords

helicopter loads; fatigue and strength tests; pullup/pushover and diving maneuvers

Subject

ENGINEERING, Mechanical Engineering

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