Version 1
: Received: 31 August 2023 / Approved: 1 September 2023 / Online: 5 September 2023 (10:24:54 CEST)
How to cite:
Al Qubeissi, M.; Shaban, F.; Almohammadi, K.M.; Shah, R.M.R. Parametric Optimisation of Hypersonic Re-entry Capsules with Air-Duct Systems. Preprints2023, 2023090103. https://doi.org/10.20944/preprints202309.0103.v1
Al Qubeissi, M.; Shaban, F.; Almohammadi, K.M.; Shah, R.M.R. Parametric Optimisation of Hypersonic Re-entry Capsules with Air-Duct Systems. Preprints 2023, 2023090103. https://doi.org/10.20944/preprints202309.0103.v1
Al Qubeissi, M.; Shaban, F.; Almohammadi, K.M.; Shah, R.M.R. Parametric Optimisation of Hypersonic Re-entry Capsules with Air-Duct Systems. Preprints2023, 2023090103. https://doi.org/10.20944/preprints202309.0103.v1
APA Style
Al Qubeissi, M., Shaban, F., Almohammadi, K.M., & Shah, R.M.R. (2023). Parametric Optimisation of Hypersonic Re-entry Capsules with Air-Duct Systems. Preprints. https://doi.org/10.20944/preprints202309.0103.v1
Chicago/Turabian Style
Al Qubeissi, M., Khalid M. Almohammadi and Raja Mazuir R.A. Shah. 2023 "Parametric Optimisation of Hypersonic Re-entry Capsules with Air-Duct Systems" Preprints. https://doi.org/10.20944/preprints202309.0103.v1
Abstract
This study focuses on the aerodynamic optimization of the re-entry capsule (REC) Orion Crew Exploration Vehicle (CEV) module, evaluating its performance using computational fluid dynamics (CFD). Three different models, namely Baseline, 2-Duct, and 4-Duct, are investigated under a wide range of flow speeds, from supersonic (Ma=1.6) to hypersonic (Ma=6) regimes. Thermofluids aspects, drag coefficient, surface heat flux, and the effectiveness of the modified geometry are assessed using aerodynamic and temperature-based models. The results show that the introduction of ducts in the 2-Duct and 4-Duct models leads to an average decrease in the drag coefficient of approximately 2.1% and 2.9%, respectively, compared to the baseline model, across all Mach numbers. The maximum reduction in drag coefficient is 3.55%, observed at Ma=1.4 using the 4-Duct capsule. However, it is found that the addition of extra ducts to the model increases the maximum heat transfer rate. Specifically, the heat flux is increased by up to 69% for the 4-Duct model at Ma=6, compared to the baseline model. On average, the heat flux is increased by approximately 28.6% for all conditions. The findings indicate that the introduction of ducts in the REC model improves its aerothermodynamic performance by reducing drag but also increases the heat transfer rate on the surface.
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
