Experiment study of propulsion-induced flow on aircraft aerodynamics

Zhang Chao; Zhu Jihong; Wu Linfeng; Li Huanyu; Li Chunwen

doi:10.11729/syltlx20160154

Volume 31 Issue 4

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Zhang Chao, Zhu Jihong, Wu Linfeng, et al. Experiment study of propulsion-induced flow on aircraft aerodynamics[J]. Journal of Experiments in Fluid Mechanics, 2017, 31(4): 22-27, 33. doi: 10.11729/syltlx20160154

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Experiment study of propulsion-induced flow on aircraft aerodynamics

doi: 10.11729/syltlx20160154

1.
Department of Flight Control and Hydraulic Systems, The First Aircraft Institute of AVIC, Xi'an 710089, China
2.
Department of Computer Science and Technology, Tsinghua University, Beijing 100084, China
3.
Department of Automation, Tsinghua University, Beijing 100084, China

Received Date: 2016-10-13
Rev Recd Date: 2017-02-02
Publish Date: 2017-08-25

Abstract

Abstract

The characteristics of aircraft aerodynamic are the fundamental characteristics of aircraft. The influence of the propulsion-induced flow on the aerodynamic force is directly related to the accuracy of the aerodynamic modeling, the flight quality and the flight safety. A real turbojet engine is installed in a scaled-down aircraft model, and a more realistic static force measurement test is conducted under the different engine thrust force, air flow velocity and direction conditions. The results show that the influence of the propulsion-induced flow is mainly reflected in the axial force, the normal force and the pitching moment. The greater the engine thrust is, the more obvious the propulsion-induced effect is. And the maximum increment value of the normal force and the pitching moment appears with an angle of attack larger than the stall angle of attack. And the sideslip angle, wind speed (small range), as well as the control surfaces deflection caused by the aerodynamic increment is mainly manifested in the stall angle of attack. Therefore, the impact of propulsion-induced effect must be considered in the high angle of attack maneuver study.
- wind tunnel test,
- engine jet,
- propulsion-induced effect,
- high angle of attack,
- static force measurement

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References(19)

References

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