Ships – Submersible device – With weapon or weapon system
Patent
1994-08-22
1995-08-08
Swinehart, Edwin L.
Ships
Submersible device
With weapon or weapon system
114238, 689 1810, B63G 828
Patent
active
054389488
ABSTRACT:
An apparatus for providing a pressurized liquid to a launch tube for launng projectiles into a liquid medium. The device comprises an elastomeric bladder disposed inside a cylindrical bypass tube. The forward end of the bypass tube is open to the liquid medium, and the aft end of the tube is hydraulically connected to the launch tube. The elastomeric bladder is externally of generally cylindrical shape and has an open aft end, a closed forward end and a side wall of varying thickness. The open end of the bladder is hydraulically connected to valves which act to control charging of the bladder and firing of the bladder. The bladder expands to contact the wall of the bypass tube when the bladder is filled with pressurized seawater. Ultimately the whole bladder will act to seal the bypass tube by contact with the bypass tube wall to prevent the external liquid medium from communicating with the launch tube through the bypass tube. Upon vehicle launch pressurized liquid is provided from the elastomeric bladder to the launch tube. The bladder returns to its original shape after discharge breaking contact with the bypass tube wall, and liquid is allowed to flow through the bypass tube into the launch tube to prevent cavitation from occurring at the launch tube breech.
REFERENCES:
patent: 2848970 (1958-08-01), Gunning
patent: 4523538 (1985-06-01), Hollmann et al.
patent: 4848210 (1989-07-01), Bissonnette
patent: 5085122 (1992-02-01), Berlam et al.
patent: 5200572 (1993-04-01), Bissonnette et al.
patent: 5231241 (1993-07-01), Bissonnette
Kasischke James M.
Lall Privthvi C.
McGowan Michael J.
Swinehart Edwin L.
The United States of America as represented by the Secretary of
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