Aeronautics and astronautics – Landing gear – Water landing
Patent
1989-04-26
1990-10-16
Basinger, Sherman D.
Aeronautics and astronautics
Landing gear
Water landing
244106, B64C 100
Patent
active
049629786
ABSTRACT:
A seaplane having a low wing, a cabin over the wing, a pusher propeller located at the aft end of the cabin and just forward of the trailing edge of the wing and an empennage supported on a tail boom. The central portion of the leading edge of the wing extends forward in the shape of an isosceles triangle with its base against what would be a conventional leading edge and its apex in a vertical plane through the center line of the aircraft. The wing, including the triangular extension, provides flotation. The underside of the central portion incorporates transverse, angularly displaced and longitudinal steps. The lower portion of the propeller arc is separated from the water surface by the thickness of the wing near its trailing edge and the clearance between the arc and the proximate upper surace of the wing, allowing the thrust line and line of action of aerodynamic drag to be relatively close, resulting in a relatively low negative pitching moment. This moment is primarily offset by positive aerodynamic forces on the triangularly shaped wing extension producing a positive pitching moment. The extension diverts water spray from the propeller and creates vortices which direct high energy air into the propeller arc.
REFERENCES:
patent: 1263846 (1918-04-01), Brooke
patent: 1922769 (1933-08-01), Kleinhenz
patent: 2228860 (1941-01-01), Von Schlippe
patent: 2259625 (1941-10-01), Dornier
patent: 3145954 (1964-08-01), Jenny et al.
patent: 3599903 (1971-08-01), Handler
patent: 3614032 (1971-10-01), Purcell, Jr.
patent: 3627235 (1971-12-01), Lippisch
patent: 4298175 (1981-11-01), Earl
"Air Trails", Summer of 1970.
"A Chronical of Aviation History in America", Eaton Mfg. Co., Cleveland, OH., Copyright 1948, p. 197.
Avila Stephen P.
Barnard Delbert J.
Basinger Sherman D.
LandOfFree
High efficiency seaplane does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with High efficiency seaplane, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High efficiency seaplane will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-845696