Results 51 to 60 of about 16,699 (209)
AerospaceA novel mechanism for seamless morphing trailing edge flaps is presented in this paper. This bio-inspired morphing concept is derived from an elephant’s trunk and is called the Elephant Trunk Mechanism (ETM).
Mir Hossein Negahban +4 more
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Blade-mounted trailing edge flap control for BVI noise reduction [PDF]
Numerical procedures based on the 2-D and 3-D full potential equations and the 2-D Navier-Stokes equations were developed to study the effects of leading and trailing edge flap motions on the aerodynamics of parallel airfoil-vortex interactions and on ...
Charles, B. D. +3 more
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ActuatorsThis work presents a low-fidelity optimization method for a compliant morphing wing trailing-edge structure, developed to achieve multiple optimized aerodynamic shapes under combined aerodynamic and control loads using a single actuation pathway ...
Martynas Lendraitis +1 more
doaj +1 more source
On the generation of side-edge flap noise [PDF]
A theory is proposed for estimating the noise generated at the side edges of part span trailing edge flaps in terms of pressure fluctuations measured just in-board of the side edge of the upper surface of the flap.
Howe, M. S.
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Airplane wing leading edge variable camber flap [PDF]
, 1980 The invention and design of an aerodynamic high lift device which provided a solution to an aircraft performance problem are described. The performance problem of converting a high speed cruise airfoil into a low speed aerodynamic shape that would ...
Cole, J. B.
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Externally blown flap trailing edge noise reduction by slot blowing: A preliminary study [PDF]
Short takeoff and landing (STOL) aircraft using externally blown flaps (EBF) for lift augmentation develop considerable jet-flap interaction noise. A proposed method to reduce the EBF trailing edge noise is to locate a slot near the trailing edge of a ...
Burns, R. J., Mckinzie, D. J., Jr.
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Full scale upper surface blown flap noise [PDF]
A highly noise suppressed TF 34 engine was used to investigate the noise of several powered lift configurations involving upper surface blown (USB) flaps. The configuration variables were nozzle type (i.e.
Heidelberg, L. J. +2 more
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Force and moment measurements on a 74 deg delta wing with an apex flap [PDF]
Results are presented of a subsonic experimental investigation of an apex flap concept on a 74 deg swept delta wing with trailing-edge flaps. The apex flap comprised approximately 6 percent of the wing area forward of a transverse hinge, allowing for ...
Buter, T. A., Rao, D. M.
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Gurney flap effect using jet induced by plasma actuator
Nihon Kikai Gakkai ronbunshu, 2015 Lift and drag variations by plasma actuators have been investigated under flow at low Reynolds numbers ranging from 1.7×104 to 6.6×104. Wall-normal-jet type and counter-jet type plasma actuators are attached on the pressure surface near the trailing edge
Daiki SUZUKI +4 more
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An aerodynamic analysis computer program and design notes for low speed wing flap systems [PDF]
The expanded capabilities for analysis and design of low speed flap systems afforded by recent modifications of an existing computer program is described.
Carlson, H. W., Walkley, K. B.
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