Fluid handling – Flow affected by fluid contact – energy field or coanda effect – Means to regulate or vary operation of device
Patent
1975-12-22
1976-11-23
Blix, Trygve M.
Fluid handling
Flow affected by fluid contact, energy field or coanda effect
Means to regulate or vary operation of device
137 78, 340 2, B63B 2152
Patent
active
039927369
ABSTRACT:
A check valve is secured to the base of an air deployable ram-air inflata bag attached in the crown of a parachute or decelerator. Upon descent, air is forced through an orifice in the valve thereby opening a flapper and inflating the bag while decelerating the downward velocity of a sonobuoy attached to the decelerator. Upon water entry, water flows into the bag and expands a sponge positioned in the valve thereby forcing the flapper against the orifice and preventing the escape of trapped air from the bag during low frequency vertical oscillation in a static floating position.
REFERENCES:
patent: 2577337 (1951-12-01), Lancaster
patent: 2895493 (1959-07-01), Edwards
patent: 3204872 (1965-09-01), Whear
patent: 3448689 (1969-06-01), Caldwell
patent: 3889224 (1975-06-01), Reed et al.
Koper Kenneth T.
Reed, 3rd Edgar A.
Vaders Dennis H.
Blix Trygve M.
Goldstein Stuart M.
Hansen Henry
Iseman William J.
Sciascia R. S.
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