A wind tunnel free flight testing technique for nonplanar motion of spinning models

1966 ◽  
Author(s):  
H. HOLWAY
Keyword(s):  
Wind Tunnel ◽  
Free Flight ◽  
Flight Testing ◽  
Testing Technique

scholarly journals SIMULATION METHOD FOR WIND TUNNEL BASED VIRTUAL FLIGHT TESTING

2012 ◽  
Vol 19 ◽  
pp. 381-389 ◽  
Author(s):  
HAO LI ◽  
ZHONG-LIANG ZHAO ◽  
ZHAO-LIN FAN
Keyword(s):  
Wind Tunnel ◽  
Closed Loop ◽  
Angular Rate ◽  
Vertical Plane ◽  
Simulation Method ◽  
Feedback Signal ◽  
Coupling Mechanism ◽  
Test Model ◽  
Free Flight ◽  
Flight Testing

The Wind Tunnel Based Virtual Flight Testing (WTBVFT) could replicate the actual free flight and explore the aerodynamics/flight dynamics nonlinear coupling mechanism during the maneuver in the wind tunnel. The basic WTBVFT concept is to mount the test model on a specialized support system which allows for the model freely rotational motion, and the aerodynamic loading and motion parameters are measured simultaneously during the model motion. The simulations of the 3-DOF pitching motion of a typical missile in the vertical plane are performed with the openloop and closed-loop control methods. The objective is to analyze the effect of the main differences between the WTBVFT and the actual free flight, and study the simulation method for the WTBVFT. Preliminary simulation analyses have been conducted with positive results. These results indicate that the WTBVFT that uses closed-loop autopilot control method with the pitch angular rate feedback signal is able to replicate the actual free flight behavior within acceptable differences.

Recent NASA Wind Tunnel Free-Flight Testing Of A Multirotor Unmanned Aircraft System

2020 ◽  
Author(s):  
John V. Foster ◽  
Luke J. Miller ◽  
Ronald C. Busan ◽  
Sarah Langston ◽  
David Hartman
Keyword(s):  
Wind Tunnel ◽  
Unmanned Aircraft ◽  
Free Flight ◽  
Unmanned Aircraft System ◽  
Flight Testing ◽  
Aircraft System

Wind Tunnel and Free-Flight Testing of Active Flow Control for Modified NACA 613-618 Airfoil

2013 ◽  
Author(s):  
James Dianics ◽  
Michael Balthazar ◽  
Andreas Gross ◽  
Hermann F. Fasel
Keyword(s):  
Wind Tunnel ◽  
Flow Control ◽  
Active Flow Control ◽  
Free Flight ◽  
Flight Testing ◽  
Active Flow

Comparison of free-flight and wind tunnel data for a generic fighterconfiguration

1982 ◽  
Author(s):  
G. WINCHENBACH ◽  
R. CHELEKIS ◽  
B. USELTON ◽  
W. HATHAWAY
Keyword(s):  
Wind Tunnel ◽  
Free Flight ◽  
Wind Tunnel Data
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