Theoretical analysis of research on aircraft spin characteristic in horizontal wind tunnel

GUO Linliang; ZHU Minghong; FU Hao; YANG Hongsen; ZHONG Chengwen

doi:10.7527/S1000-6893.2018.22030

ACTA AERONAUTICAET ASTRONAUTICA SINICA >

2018 , Vol. 39 >Issue 6: 122030 - 122030

DOI: https://doi.org/10.7527/S1000-6893.2018.22030

Fluid Mechanics and Flight Mechanics

Theoretical analysis of research on aircraft spin characteristic in horizontal wind tunnel

GUO Linliang ,
ZHU Minghong ,
FU Hao ,
YANG Hongsen ,
ZHONG Chengwen

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1. School of Aeronautics, Northwestern Polytechnical University, Xi'an 710072, China;
2. Low Speed Aerodynamics Institute, China Aerodynamics Research and Development Center, Mianyang 621000, China

Received date: 2018-01-22

Revised date: 2018-04-23

Online published: 2018-04-23

Supported by

National Key Basic Research Program of China (2015CB755800)

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Abstract

Theoretical analysis of investigation of characteristics of an aircraft spin using an actively controlled scaled model of a 3-DOF gimbal in the horizontal wind tunnel is given. The simulation results based on the 3-DOF rig are compared with results of the conventional 6-DOF simulation and free flight spin test, and a good agreement between them is observed. Moreover, the motion parameters during the spin entry and developing phase can be obtained using the 3-DOF rig, which enables simulation of the whole process from spin entry to developing and to recovery. Meanwhile, the effects of dynamics of the rod, gimbal friction moments and shift of the center of gravity in the model relative to the center of the gimbals are considered. The results show that the inertia of the rod and shift of the center of gravity should be strictly controlled during the design phase, and that friction has small influence on spin behaviors.

Key words： dynamic similarity; 3-DOF; multi-body dynamics; flight simulation; wind tunnel test; spin characteristic

Cite this article

GUO Linliang , ZHU Minghong , FU Hao , YANG Hongsen , ZHONG Chengwen . Theoretical analysis of research on aircraft spin characteristic in horizontal wind tunnel[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2018 , 39(6) : 122030 -122030 . DOI: 10.7527/S1000-6893.2018.22030

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