邵元培, 钱炜祺, 程艳青等. 动压相似对缩比飞行的影响. 力学与实践, 2024, 46(1): 158-163. doi:10.6052/1000-0879-23-209
引用本文: 邵元培, 钱炜祺, 程艳青等. 动压相似对缩比飞行的影响. 力学与实践, 2024, 46(1): 158-163.doi:10.6052/1000-0879-23-209
Shao Yuanpei, Qian Weiqi, Cheng Yanqing, et al. The influence of dynamic pressure similarity on scaled model flight. Mechanics in Engineering, 2024, 46(1): 158-163. doi:10.6052/1000-0879-23-209
Citation: Shao Yuanpei, Qian Weiqi, Cheng Yanqing, et al. The influence of dynamic pressure similarity on scaled model flight.Mechanics in Engineering, 2024, 46(1): 158-163.doi:10.6052/1000-0879-23-209

动压相似对缩比飞行的影响

THE INFLUENCE OF DYNAMIC PRESSURE SIMILARITY ON SCALED MODEL FLIGHT

  • 摘要:模型飞行试验作为空气动力学研究的重要手段之一,正逐步成为新型飞机研发中一种有效和低风险的技术途径。目前低速飞行试验技术已经相对成熟,而高速飞行试验尚存在许多困难。本文分析结果显示,来流动压对缩比飞行试验具有显著影响。动压相似保证缩比飞机与原型机表现出相似的动力学特性,但同时也限制了缩比飞机的飞行性能。研究发现,对于本文中的高升阻比飞机,通过飞行方案设计,缩比飞机能够克服动压相似带来的约束,获得与原型机相仿甚至超过原型机的飞行性能,对后续开展其他缩比模型飞行试验具有一定的借鉴意义,同时可为我国低成本高性能靶标系统建设提供技术支持。

    Abstract:Model flight test is one of the important methods in aerodynamic research and has become a low-risk and effective technical approach for aerodynamic research and for demonstration and validation of aerodynamic configuration. Nowadays the technology of low speed model flight test becomes more mature but there are still some severe technical problems in the high speed model flight test. It can be seen that the influence of dynamic pressure on model flight test is significant. The dynamic pressure similarity ensures that the scaled aircraft have similar dynamic characteristics with the prototype, but it also limits the flight ability of scale aircraft. In this paper, we can see that with appropriate flight scheme, the scaled aircraft can break the limitation bring by dynamic pressure similarity and obtain equivalent or even better flight performance, compared with the prototype, which has certain guiding significance for the subsequent scaled flight test.

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