Elliptical ram air pressurized airfoil parachute

Details Elliptical ram air pressurized airfoil parachute Elliptical ram air pressurized airfoil parachute

1989-10-02

1991-12-03

Barefoot, Galen

Aeronautics and astronautics

Safety lowering devices

Parachutes

B64D 1702

Patent

active

050694049

ABSTRACT:
An improved parachute utilizing a ram air design and having an upper surface connected to a lower surface by a plurality of rib members and forming a plurality of chambers therebetween. The end chambers are smaller than the center chambers and this increases the lift-to-drag ratio of the parachute. The parachute has a substantially elliptical planform so as to increase the aspect and glide ratios of the parachute.

REFERENCES:
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patent: 3131894 (1964-05-01), Jalbert
patent: 3433441 (1969-03-01), Cummings
patent: 3524613 (1970-08-01), Reuter et al.
patent: 3724789 (1973-04-01), Snyder
patent: 3822844 (1974-07-01), Sutton
patent: 3944169 (1976-03-01), Bede
patent: 3945592 (1976-03-01), Sutton
patent: 4389031 (1983-06-01), Whittington
patent: 4399969 (1983-08-01), Gargano
patent: 4424945 (1984-01-01), Dell
Perkins et al., "Airplane Performance Stability and Control", Wiley Press, 1967, pp. 72-75.
Para Gear Catalog, 1984-85, pp. 17, 19.

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