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An extremal problem related to biplanes [PDF]
Australas. J Comb., 1999 A biplane is a symmetric 2-design with \(\lambda=2\). Only finitely many biplanes are known and whether or not there really are only finitely many is an important open problem. In the present paper, the author discusses an extremal problem that is closely related to biplanes. Namely what is the smallest number \(m\) of subsets (called blocks) of an \(n\
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Aircraft Engineering and Aerospace Technology, 1938
IN AIRCRAFT ENGINEERING for June, 1935, and in R. & M. 1715, the present writer and others described some experiments on a wing cellule model of a new form of biplane, the special advantage of which was stability in roll up to angles of incidence as high as about 40deg.; and it was suggested that if the results of the model experiments were borne ...
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IN AIRCRAFT ENGINEERING for June, 1935, and in R. & M. 1715, the present writer and others described some experiments on a wing cellule model of a new form of biplane, the special advantage of which was stability in roll up to angles of incidence as high as about 40deg.; and it was suggested that if the results of the model experiments were borne ...
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Numerical investigation on buffeting and lock-in phenomenon for biplane airfoils at α = 4 0 ∘
International Journal of Mechanical Sciences, 2022Ruixue Guo, Yue Bai, Guangxin Wu
exaly
2015
A view of men standing with a Swallow Airplane Company biplane. "Post Office Garage Air Services" and the aircraft number C224 are printed on the tail.
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A view of men standing with a Swallow Airplane Company biplane. "Post Office Garage Air Services" and the aircraft number C224 are printed on the tail.
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Numerical investigation of aerodynamics and wake on biplane airfoils at high angles of attack
International Journal of Mechanical Sciences, 2021Ruixue Guo, Yue Bai, Zhitong Lai
exaly
1998
A semi-biplane is a (thick connected) point-line geometry which satisfies the following axioms: any two points have zero or two lines joining them, and, dually, any two lines intersect in zero or two points. In an earlier paper, the authors showed that semi-biplanes can be constructed from anti-regular generalized quadrangles [Geom. Dedicata 69, No. 2,
Polster, Burkard Michael, Schroth, A. E.
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A semi-biplane is a (thick connected) point-line geometry which satisfies the following axioms: any two points have zero or two lines joining them, and, dually, any two lines intersect in zero or two points. In an earlier paper, the authors showed that semi-biplanes can be constructed from anti-regular generalized quadrangles [Geom. Dedicata 69, No. 2,
Polster, Burkard Michael, Schroth, A. E.
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Optimal structural design of biplane wind turbine blades
Renewable Energy, 2020Phillip Chiu, Richard E Wirz
exaly
Aerodynamic performance prediction of NREL phase VI blade adopting biplane airfoil
Energy, 2020Junwei Zhong, Jingyin Li
exaly