Patent ID: 6131516
Filing Date: 2000-10-17
Classification: F42C

Abstract:
A fuze system for munitions that are to be launch-deployed and water-detonated, comprising:a housing defining a first bore and second bore contiguous with said first bore, said housing further defining at least one radial port allowing an environment about said housing to communicate with said first bore;a first piston slidably mounted in said first bore;a second piston slidably mounted in said second bore and positioned flush with said first bore;piston control means coupled between said munitions and said first piston for positioning said first piston is a first position prior to launch, said first position defined by said first piston sealing off said at least one radial port while being spaced apart from said second piston wherein a chamber in said first bore is defined between said first piston and said second piston, said piston control means moving said first piston at launch to a second position wherein said chamber expands so that said at least one radial port is in communication with said chamber and wherein fluid in said environment about said housing can fill said chamber, said piston control means further driving said first piston from said second position towards said first position at a specified time after launch wherein, after said first piston seals off said at least one radial port, said first piston pressurizes said fluid in said chamber wherein, when said fluid is water, said second piston is driven along said second bore as actuating movement; anda firing mechanism in communication with said second bore and coupled to said munitions, said firing mechanism being responsive to said actuating movement to generate detonation energy for said munitions.