scholarly journals Optimization and verification of free flight separation similarity law in high-speed wind tunnel

2020 ◽  
Vol 33 (2) ◽  
pp. 501-507 ◽  
Author(s):  
Fei XUE ◽  
Xin JIN ◽  
Peihua FENG ◽  
Han QIN ◽  
Zenghui JIANG ◽  
...  
Keyword(s):  
Wind Tunnel ◽  
High Speed ◽  
Free Flight ◽  
Similarity Law

scholarly journals Optimization and verification of wind tunnel free-flight similarity law for separation of cluster munition

2021 ◽  
Vol 34 (3) ◽  
pp. 61-70
Author(s):  
Fei XUE ◽  
Jun TANG ◽  
Huaqiang WANG ◽  
Zenghui JIANG ◽  
Yuchao WANG ◽  
...  
Keyword(s):  
Wind Tunnel ◽  
Free Flight ◽  
Similarity Law

Derivation and verification of a similarity law for wind-tunnel free-flight tests of heavy-store separation

2020 ◽  
Vol 174 ◽  
pp. 123-130 ◽  
Author(s):  
Fei Xue ◽  
Huaqiang Wang ◽  
Zenghui Jiang ◽  
Yuchao Wang
Keyword(s):  
Wind Tunnel ◽  
Free Flight ◽  
Flight Tests ◽  
Store Separation ◽  
Similarity Law

scholarly journals Free flight wind tunnel test similarity law derivation for light store separation from aircraft

2019 ◽  
Vol 11 (5) ◽  
pp. 168781401985306 ◽  
Author(s):  
Fei Xue ◽  
Han Qin ◽  
Yuchao Wang ◽  
Zenghui Jiang ◽  
Xin Jin ◽  
...  
Keyword(s):  
Wind Tunnel ◽  
Wind Tunnel Test ◽  
Free Flight ◽  
Store Separation ◽  
Similarity Law

scholarly journals Aerodynamics of inclined cylindrical bodies free-flying in a hypersonic flowfield

2021 ◽  
Vol 62 (9) ◽  
Author(s):  
Patrick M. Seltner ◽  
Sebastian Willems ◽  
Ali Gülhan ◽  
Eric C. Stern ◽  
Joseph M. Brock ◽  
...  
Keyword(s):  
High Speed ◽  
Degrees Of Freedom ◽  
Numerical Data ◽  
Static Stability ◽  
Free Flight ◽  
Aerodynamic Coefficients ◽  
Flow Topology ◽  
Motion Data ◽  
Continuous Rotation ◽  
German Aerospace

Abstract The influence of the flight attitude on aerodynamic coefficients and static stability of cylindrical bodies in hypersonic flows is of interest in understanding the re/entry of space debris, meteoroid fragments, launch-vehicle stages and other rotating objects. Experiments were therefore carried out in the hypersonic wind tunnel H2K at the German Aerospace Center (DLR) in Cologne. A free-flight technique was employed in H2K, which enables a continuous rotation of the cylinder without any sting interferences in a broad angular range from 0$$^{\circ }$$ ∘ to 90$$^{\circ }$$ ∘ . A high-speed stereo-tracking technique measured the model motion during free-flight and high-speed schlieren provided documentation of the flow topology. Aerodynamic coefficients were determined in careful post-processing, based on the measured 6-degrees-of-freedom (6DoF) motion data. Numerical simulations by NASA’s flow solvers Cart3D and US3D were performed for comparison purposes. As a result, the experimental and numerical data show a good agreement. The inclination of the cylinder strongly effects both the flowfield and aerodynamic loads. Experiments and simulations with concave cylinders showed marked difference in aerodynamic behavior due to the presence of a shock–shock interaction (SSI) near the middle of the model. Graphic abstract

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
Sign in / Sign up

Export Citation Format

Share Document