Experimental and Theoretical Study of Gust Response for High-Aspect-Ratio Wing

AIAA Journal ◽  
2002 ◽  
Vol 40 (3) ◽  
pp. 419-429 ◽  
Author(s):  
Deman Tang ◽  
Earl H. Dowell
Keyword(s):  
Aspect Ratio ◽  
High Aspect Ratio ◽  
Theoretical Study ◽  
Gust Response

Gust Response for Flexibly Suspended High-Aspect Ratio Wings

AIAA Journal ◽  
2010 ◽  
Vol 48 (10) ◽  
pp. 2430-2444 ◽  
Author(s):  
Deman Tang ◽  
Adam Grasch ◽  
Earl H. Dowell
Keyword(s):  
Aspect Ratio ◽  
High Aspect Ratio ◽  
Gust Response

scholarly journals Longitudinal Aerodynamic and Stability Characteristics of High-Aspect-Ratio Unmanned Aerial Vehicles in Gust Response

2019 ◽  
Author(s):  
Junli Wang ◽  
Wensheng Zhang ◽  
Bolin Feng ◽  
Zhigui Ren ◽  
Qinghe Zhao
Keyword(s):  
Numerical Simulation ◽  
Aspect Ratio ◽  
Unmanned Aerial Vehicles ◽  
High Aspect Ratio ◽  
Stability Margin ◽  
Simulation Method ◽  
Static Stability ◽  
Aerial Vehicles ◽  
Numerical Simulation Method ◽  
Gust Response

The aim of this work is to propose an accurate and reliable numerical simulation method of gust response, so as to analyze longitudinal stability characteristics of high-aspect-ratio unmanned aerial vehicles (UAVs) under gust response. Based on the dual-time stepping method, the unsteady Navies-Stokes equation was solved. By introducing grid velocity to study the effects of gust, the numerical simulation of gust response was realized. Moreover, the numerical simulation method was verified to be accurate by using the theoretical value and reference value obtained in previous research. The calculation results of the high-aspect-ratio UAV under the 1-cos gust reveal that longitudinal aerodynamic forces of high-aspect-ratio UAVs changed. In the whole range of gust gradient length, the UAVs were always in the state of static stability. However, with the increase of gust velocity, static stability margin decreased. The numerical simulation method of gusts established in this study preferably overcomes the possible numerical oscillations and divergence problems caused by excessive gust velocity. The analysis on longitudinal static stability and stability margin of high-aspect-ratio UAVs under the effects of gusts can ensure flight quality and safety of UAVs under the effects of gusts.

scholarly journals Gust response analysis and wind tunnel test for a high-aspect ratio wing

2016 ◽  
Vol 29 (1) ◽  
pp. 91-103 ◽  
Author(s):  
Yi Liu ◽  
Changchuan Xie ◽  
Chao Yang ◽  
Jialin Cheng
Keyword(s):  
Wind Tunnel ◽  
Aspect Ratio ◽  
High Aspect Ratio ◽  
Wind Tunnel Test ◽  
Response Analysis ◽  
Gust Response
Sign in / Sign up

Export Citation Format

Share Document