Citations
More filters
Journal ArticleDOI
Animal flight dynamics I. Stability in gliding flight.
TL;DR: Using the pitching moment equations for gliding animals and by discussing potential sources of roll and yaw stability, it is found that flying animals possess a far higher degree of inherent stability than has generally been recognized.
Proceedings ArticleDOI
Induced drag - Historical perspective
TL;DR: Induced drag is associated with the shedding of vorticity along the span of a finite wing, especially its tip region; for most subsonic aircraft configurations, induced drag constitutes about 50 percent of total aircraft drag throughout the flight envelope.
Journal ArticleDOI
A Fundamental Comparison of Canard and Conventional Configurations
Tad McGeer,Ilan Kroo +1 more
TL;DR: In this article, the relative efficiency of canard, tandem, and aft-tailed aircraft configurations through analysis of an elementary lifting system was examined, and two general solutions emerged for minimum induced drag as a function of the geometry and the division of lift between the surfaces of such a system - one for fixed span and the other for fixed weight.
Journal ArticleDOI
Navier-Stokes simulation of a close-coupled canard-wing-body configuration
TL;DR: The influence of the canard on the wing flow field, including canard-wing vortex interaction and wing vortex breakdown, is investigated in this article, where the thin-layer Navier-Stokes equations are solved for the flow about a coplanar close-coupled canardwing-body configuration at a transonic Mach number of 0.90 and at angles of attack ranging from 0 to 12 degrees.
Journal ArticleDOI
Benefits of dual wings over single wings for high-performance business airplanes
Mark D. Rhodes,Bruce P. Selberg +1 more
TL;DR: In this article, the authors compared closely coupled dual-wing aircraft and swept-forward swept-rearward (SFSR) aircraft to compare the advantages offered by aircraft designed with multiple-wing systems.
References
More filters
Induced Drag of Multiplanes
TL;DR: The most important part of the resistance or drag of a wing system, the induced drag, can be calculated theoretically, when the distribution of lift on the individual wings is known as mentioned in this paper.
Journal ArticleDOI
Prandtl's biplane theory applied to canard and tandem aircraft
TL;DR: In this paper, the authors generalized Prandtl's biplane theory for elliptic loadings to apply to nonelliptic spanwise load distributions, and calculated the mutually induced drag by integrating the Trefftz-plane downwash of the front surface over the independent load distribution on the rear surface.
Journal ArticleDOI
Positive Tail Loads for Minimum Induced Drag of Subsonic Aircraft
TL;DR: In this article, it was shown that the minimum induced drag occurs with a positive tail upload and that the reduction in the total induced drag by a tail download was overestimated by using the total downwash of the wing on the tail, while neglecting the downwash produced on the wing by the tail.
Proceedings ArticleDOI
Wind-Tunnel Measurements of Wing-Canard Interference and a Comparison with Various Theories
TL;DR: In this paper, a 7 x 10 wind tunnel is used to explore various combinations of wing-canard vertical and horizontal positioning to investigate potential improved stalling characteristics over conventional tail-aft configurations, investigate the existence of a lift coefficient advantage, and determine induced drag levels.
Journal ArticleDOI
A Fundamental Comparison of Canard and Conventional Configurations
Tad McGeer,Ilan Kroo +1 more
TL;DR: In this article, the relative efficiency of canard, tandem, and aft-tailed aircraft configurations through analysis of an elementary lifting system was examined, and two general solutions emerged for minimum induced drag as a function of the geometry and the division of lift between the surfaces of such a system - one for fixed span and the other for fixed weight.