Aeronautics and astronautics – Aircraft sustentation – Sustaining airfoils
Patent
1983-08-18
1987-02-10
Barefoot, Galen L.
Aeronautics and astronautics
Aircraft sustentation
Sustaining airfoils
244 45A, 244 45R, 244 46, B64C 354, B64C 340
Patent
active
046418008
ABSTRACT:
This invention relates to a tandem or multi-winged aircraft wherein a primary wing system is so designed and equipped that it is capable of being actuated in a manner to bring about a shift in the neutral point of the craft relative to its center of gravity and wherein a secondary wing system located ahead of the primary one and movable fore and aft relative to the latter is deployed and angled during its excursion so as to effectively counteract the neutral point shift that would be brought about by deploying the primary wing system alone thereby maintaining the neutral point at approximately its former location in at least both the cruise mode as well as the high-lift mode preferred for landing and take-off.
REFERENCES:
patent: 2744698 (1956-05-01), Baynes
patent: 3330501 (1967-07-01), Barber
patent: 3738595 (1973-06-01), Bouchnik
patent: 3776491 (1973-12-01), Oulton
patent: 4093156 (1978-06-01), Coe, Jr.
Flight International, "Canards: Design With Care", pp. 19-21, Feb. 23, 1985.
"Notes on the Tail-First Aeroplane", RAE Report BA 1542, S. B. Gates, Nov. 18, 1941.
"Aircraft Design Part I, Parametric Studies", A. A. Lebedinski, Dept. of Aeronautical Eng., Indian Institute of Science, Bangalore, India, 1963.
NACA RM-L8614, "Study of the Canard Config. with Particular Ref. to Transonic Flight Characteristics and Low Speed Characteristics at High Lift", C. W. Mathews, Nov. 16, 1949.
NACA TN-1499, "Flight Tests of the Miles Libellula Tandem Biplane", P. Brotherhood, et al., Aug. 1944.
Barefoot Galen L.
Corl Rodney
Spangler, Jr. Edwin L.
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