Proceedings ArticleDOI
Pressure measurements on twin vertical tails in buffeting flow
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TLDR
In this paper, the vertical tail surfaces of a 13% F-15 model were measured in a low-speed wind tunnel with a pressure transducers mounted on rigid and flexible tails, and steady and unsteady pressures were obtained from the transducers at levels as low as 0.1% full scale.Abstract:
Buffeting pressures were measured on the vertical tail surfaces of a 13% F-15 model in a low-speed wind tunnel. Test variables included dynamic pressure, aircraft angle of attack, vertical tail incidence, and rudder deflection. Pressure transducers were flush mounted on rigid and flexible tails. Steady and unsteady pressures were obtained from the transducers at levels as low as 0.1% full scale. The steady pressures were integrated for aerodynamic coefficients and the unsteady pressures were reduced to spectral densities. The pressures are maximum at approximately 22 deg angle of attack and are significantly affected by tail flexibility.read more
Citations
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Journal ArticleDOI
Some aspects of aircraft dynamic loads due to flow separation
TL;DR: In this paper, the authors discuss the need for consistent definitions of buffet and buffeting, the advantages of a consistent notation, buffeting due to wings and other components, the alleviation of buffeting and the special difficulties of flight tests.
Journal ArticleDOI
Pressure measurements on twin vertical tails in buffeting flow
TL;DR: In this article, the vertical tail surfaces of a 13% F-15 model were measured in a low-speed wind tunnel with a pressure transducers mounted on rigid and flexible tails, and steady and unsteady pressures were obtained from the transducers at levels as low as 0.1% full scale.
Proceedings ArticleDOI
Numerical simulation of the interaction between a leading-edge vortex and a flexible vertical tail
Proceedings ArticleDOI
Development of narrow-band velocity fluctuations in vortex flows
Narayanan Komerath,J. P. Hubner +1 more
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Investigation of empennage buffeting
C. E. Lan,I. G. Lee,W. H. Wentz +2 more
TL;DR: In this article, the root mean square values of root bending moment on the vertical tails are calculated for a rigid configuration and the resulting buffeting vortex from the leading edge extension of an F-18 configuration is used to generate a fluctuating flow field, which produces unsteady pressure distribution on vertical tails.
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