Parachute with low opening shock and high stability

Details Parachute with low opening shock and high stability Parachute with low opening shock and high stability

1979-11-09

1982-04-27

Barefoot, Galen L.

Aeronautics and astronautics

Safety lowering devices

Parachutes

B64D 1702, B64D 1718

Patent

active

043266835

ABSTRACT:
A parachute comprising a non-porous canopy having an outer peripheral skirt and a substantially centrally located vent. The canopy includes a plurality of circumferentially spaced holes which are all spaced from the vent and which are confined within a zone of the canopy between 40 and 80% of the radial distance from the center of the vent to the skirt. The total area of the holes is between 10 to 25% of the total area of the canopy.

REFERENCES:
patent: 1685688 (1928-09-01), Thornblad
patent: 2096520 (1937-10-01), Knight
patent: 2409562 (1946-10-01), Hastings
patent: 2851389 (1958-09-01), Lappala
patent: 3195842 (1965-07-01), Wilson
Heinrich et al., "Stability and Drag of Parachutes with Varying Effective Porosity", AFFDL-TR-71-58, 1971.

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