Volume 44 Issue 1
Apr.  2024
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INVESTIGATION OF RETRO-PROPULSION-BASED FLOW FIELD AROUND RE-ENTRY CREW MODULES

  • Crew modules intended for re-entry are intricately designed with blunt shapes to endure the intense heat flux experienced during this phase. This research concentrated on bow shock formation around the blunt body during rapid hypersonic flow, providing insight into the resultant aerodynamic heating. CFD was utilized to simulate high-speed hypersonic flows over the Orion CEV. The focus was on analyzing the effects of retro-propulsion systems, specifically considering two nozzle exhaust conditions: Mach numbers 2 and 4. By modeling the airflow around the re- entry module, simulations were conducted to evaluate the reduction in heat flux achieved with varying nozzle exhaust conditions. It was analyzed that the Mach 4 nozzle exhaust condition proved more efficient in decreasing heat flux by redirecting the bow shock wave away from the crew module body compared to the Mach 2 nozzle exhaust condition. The analysis encompassed assessments of velocity, temperature, heat flux, and pressure distributions. Comparisons were conducted between crew modules re-entering without retro- propulsion systems, offering valuable insights into the effectiveness of such systems in reducing heat flux during re- entry.

     

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    通讯作者: 陈斌, bchen63@163.com
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      沈阳化工大学材料科学与工程学院 沈阳 110142

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