Supercavitating projectile with propulsion and ventilation jet

Details Supercavitating projectile with propulsion and ventilation jet Supercavitating projectile with propulsion and ventilation jet

2008-03-25

2008-03-25

Fischer, Andrew J. (Department: 3621)

Ammunition and explosives

Marine-type projectile

C102S341000, C102S374000, C102S381000, C114S020100, C114S020200

Reexamination Certificate

active

07347146

ABSTRACT:
A supercavitating projectile is disclosed and includes a combustion chamber, a forward-directed jet nozzle and a comparatively larger gas duct/rear-directed jet nozzle. The combustion chamber is filled with a propellant having a hollowed core. The core serves as a pathway to fluidly allow combustion gases to the jet nozzles. In operation, the propellant combusts to form gasses forced forward through the forward-directed nozzle to generate a virtual cavitator in the form of a ventilation gas bubble. Combusted gasses are also forced out the rear-directed nozzle forming a propulsion jet. The projectile therefore uses the rear-directed jet to maintain a cruise velocity approximate to the launch velocity and employs a source of ventilation gas using the forward-directed jet for supercavitating of the projectile.

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