Glider

Details Glider Glider

1980-06-13

1982-08-24

Hirsch, Paul J.

Aeronautics and astronautics

Aircraft sustentation

Sustaining airfoils

244 13, 46 78, A63H 2700, B64C 100

Patent

active

043454011

ABSTRACT:
A glider formed from a multi-sided tube open at its ends is disclosed. The body and lifting surfaces of the glider comprise a multi-sided tube including a top wall of planar configuration; a pair of opposed upper side walls of planar configuration integral with the top wall extending downward and outward a distance; a pair of opposed vertical side walls of planar configuration integral with the upper side walls; a pair of opposed lower side walls of planar configuration integral with the side walls extending downward and inward to a point inward of a vertical extension of the top wall and upper side wall intersections; a bottom wall extending between lower end walls and integral therewith enclosing the structure. The bottom wall includes a pair of upward extending planar sections meeting at a midpoint between lower end walls to form a ridge. An upper cut-out symmetrical about a center line of the tube removes a substantial portion of the upper surfaces, and a lower cut-out symmetrical with the center line removes a smaller portion of the bottom wall and works in concert with the upper cut-out to produce maximum lift and stability. In a preferred embodiment the bottom wall is cambered longitudinally with a convex side facing downward to further improve the lift.

REFERENCES:
patent: 1378193 (1921-05-01), Petty
patent: 1939682 (1933-12-01), Fleming
patent: 3017139 (1962-01-01), Binder
patent: 3600842 (1971-08-01), Bryman
patent: 3752423 (1973-08-01), Schaeffer
patent: 3903639 (1975-09-01), Howell
patent: 3981460 (1976-09-01), Ratony
patent: 4081158 (1978-03-01), Pearce
patent: 4146199 (1979-03-01), Wenzel
patent: 4151674 (1979-05-01), Klahn et al.

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