POROUS PLATE AND SHORT SECOND TIME OPERATING ROCKET MOTOR UTILIZING THEREOF

Japanese Patent JP3916285

B2

PROBLEM TO BE SOLVED: To suppress dispersion of explosive efficiency by laminating and arranging a plurality of porous plates having a plurality of gas flow-out holes while shifting a position of the gas flow-out holes on each porous plate, in order to preventing dispersion of a solid explosive in a solid combustion device such as a rocket motor.
SOLUTION: A dispersion controlling porous plate is formed is such a way that two porous plates are laminated with each other while shifting a phase of gas flow-out holes 1 and are connected to each other by a support 2, the sum of passing flow passage areas of the gas flow-out holes 1 are formed larger than a throat cross sectional area of a nozzle, and the inner diameter of each gas flow-out hole 1 is formed smaller than a short shaft diameter of an explosive. In the case where the inner diameter of the gas flow-out hole 1 is formed larger than the short shaft diameter of the explosive in order to form the sum of the bypass flow passage areas of gas flow-out holes 1 larger than the throat cross sectional area of the nozzle, a rib is formed on a first porous plate so as to cross the gas flow-out hole 1. The porous plate is arranged between the propellant of a short second time operating rocket motor and the inlet of the nozzle, it is possible to suppress dispersion of un-burning propellant from the nozzle efficiency.

Shinji Nakajima
Mizuzo Yozo

JP5064797A

May 16, 2007

March 05, 1997

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Asahi Kasei Chemicals Corporation

F02K9/32; (IPC1-7): F02K9/32

JP3032158U
JP6337142A
JP7279760A

Hiroyuki Nakagawa
Yuji Oishi
Kei Iwata

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