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| Impact of the Near-space Environment on Turbine Engines and Analysis of Key Technologies |
| Received:November 03, 2024 Revised:December 02, 2024 |
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| DOI：10.7643/issn.1672-9242.2025.03.008 |
| KeyWord:near space environmental impacts aerodynamics power long-endurance UAVs hypersonic aircraft |
| Author | Institution |
| CHEN Bin |
AECC Shenyang Engine Research Institute, Shenyang , China |
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| Abstract: |
| The work aims to grasp the impact and challenges of the characteristic parameters of the near-space environment on the design of turbine engines for near space vehicles, so as to support the research and development of key technologies of turbine engines. High-altitude long endurance unmanned aerial vehicles and hypersonic aircraft powered by aviation turbine engines in near space aircraft were selected as the objects, and the turbine engine design requirement analysis based on the mission characteristics of the vehicle was conducted and the analysis of the impact of near space environment characteristic parameters on turbine engine design was carried out. The design challenges faced by turbine engines for high-altitude long-endurance UAVs and hypersonic aircraft and the key technologies were clarified. The low Reynolds number conditions resulting from the environmental characteristics such as low density and low pressure in the near space will affect the component efficiency and stability of the turbine engines. Meanwhile, it will also cause the decline of the power extraction capacity and cooling capacity of the turbine engines. For hypersonic aircraft, in addition to the impact of low Reynolds number conditions, the proximity to space environment will cause turbine engines to face severe aerothermal and integrated thermal management problems. |
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