Proceedings ArticleDOI
The use of linearized-aerodynamics and vortex-flow methods in aircraft design /invited paper/
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In this paper, the NASA Vortex Lattice and Modified Multhopp methods are applied to aircraft design problems at high subsonic speeds, and the suction analogy is used to provide estimates associated with vortex-flow aerodynamics.Abstract:
This paper deals with selected linearized-aerodynamic and vortex-flow methods as applied to aircraft design problems at high subsonic speeds. In particular, the NASA Vortex Lattice and Modified Multhopp methods are the linearized techniques employed, and the suction analogy is used to provide estimates associated with vortex-flow aerodynamics. Many examples are given as to how researchers at Langley have used these methods to design the high subsonic, wing-mean-camber shapes for various configurations such as a supersonic transport, high-aspect-ratio transport, trapezoidal fighter wing, strake wing, tandem wing, joined wing, delta wing, and slender cranked wing. Many of these have been built, tested, and have had their data compared with theory. In addition, a technique for defining efficiently performing strake planforms for use in strake-wing combinations is discussed, and further improvements in wing design are outlined. The latter may be obtained by using higher-ordered linear panel methods as well as nonlinear-transonic methods.read more
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Book ChapterDOI
Generic Characterisation of Aircraft—Parameter Reduction Process
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Proceedings ArticleDOI
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Journal ArticleDOI
Review of vortex lattice method for supersonic aircraft design
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TL;DR: A review of the use of the vortex lattice method (VLM) in modeling the general aerodynamics of subsonic and supersonic aircraft can be found in this article .
References
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Optimization and design of three-dimensional aerodynamic configurations of arbitrary shape by a vortex lattice method
TL;DR: In this article, a new method based on vortex lattice theory was developed which can be applied to the combined analysis, induced drag optimization, and aerodynamic design of three-dimensional configurations of arbitrary shape.
Proceedings ArticleDOI
Wing-canard aerodynamics at transonic speeds - Fundamental considerations on minimum drag spanloads
Optimized aerodynamic design process for subsonic transport wing fitted with winglets
TL;DR: In this article, the aerodynamic design of a wind-tunnel model of a wing representative of that of a subsonic jet transport aircraft, fitted with winglets, was performed using two recently developed optimal wing-design computer programs.
Journal ArticleDOI
Aerodynamics of a Turbojet-Boosted Launch Vehicle Concept
TL;DR: In this paper, the results from analytical and experimental studies of the aerodynamic characteristics of a turbo-jet-boosted launch vehicle are presented, and the success of this launch vehicle concept depends upon several novel applications of aerodynamic technology, particularly in the area of takeoff lift and minimum transonic drag requirements.
Pressure distributions on a cambered wing body configuration at subsonic Mach numbers
TL;DR: In this paper, an investigation was conducted in the Langley high-speed 7-by-10-foot tunnel at Mach numbers of 020 and 040 and angles of attack up to about 22 deg to measure the pressure distributions on two cambered-wing configurations.
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