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Hao Li, Yuping Li, Zhongliang Zhao, Xiaobing Wang, Haiyong Yang and Shang Ma
To research serious nonlinear coupling problems among aerodynamics, flight mechanics, and flight control during high maneuvers, a virtual flight testing platform has been developed for a large-scale, high-speed wind tunnel, based on the real physical env...
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Chenghua Cong, Honggang Qin and Xingyou Yi
The unsteady characteristics of the second throat of a transonic wind tunnel have an important influence on the design and test of the wind tunnel. Therefore, the forced oscillation characteristics were studied by a numerical simulation method. The gover...
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Ye Yuan, Weihong Gong, Guojun Wang and Jun Wang
Pitch motion is the key factor affecting the performance characteristics of centrifugal pumps on board ships and exacerbates hydraulic excitation to induce the unsteady vibration of pump units. A hydraulic test platform with swing motion is established t...
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Fei Xue, Yunlong Zhang, Ning Cao and Liugang Li
In this paper, unsteady motion tests of a lateral jet adjusting an air vehicle?s attitude are carried out. Curves of pitch moment amplification factors (KM) for a lateral jet versus angle of attack (a) are obtained using a wind tunnel free-flight test te...
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Lin Hong, Xin Wang, Desheng Zhang and Hang Xu
Hydrodynamic coefficient estimation is crucial to the shape design, dynamic modeling, and control of underwater vehicles. In this paper, we conduct a numerical study on the hydrodynamic coefficient estimation of an underactuated underwater vehicle (actua...
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Carson L. Running and Thomas J. Juliano
The global surface pressure was measured on a 7°
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half-angle circular cone/flare model at a nominally zero angle of attack using pressure-sensitive paint (PSP). These experiments were conducted to illustrate fast PSP?s usefulness and effectiveness at m...
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Nadhie Juliawan, Hyoung-Seog Chung, Jae-Woo Lee and Sangho Kim
This paper focuses on estimating dynamic stability derivatives using a computational fluid dynamics (CFD)-based force oscillation method, and on separating the coupled dynamic derivatives terms obtained from the method. A transient RANS solver is used to...
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Krzysztof Sibilski, Miroslaw Nowakowski, Dariusz Rykaczewski, Pawel Szczepaniak, Andrzej Zyluk, Anna Sibilska-Mroziewicz, Michal Garbowski and Wieslaw Wróblewski
A micro air vehicle (MAV) is a class of miniature unmanned aerial vehicles that has a size restriction and may be autonomous. Fixed-wing MAVs are very attractive for outdoor surveillance missions since they generally offer better payload and endurance ca...
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