Bulkhead rupture disc for solid propellant missiles

Details Bulkhead rupture disc for solid propellant missiles Bulkhead rupture disc for solid propellant missiles

1986-06-09

1988-04-19

Casaregola, Louis J.

Power plants

Reaction motor

Motive fluid from diverse generators alternatively ejected...

60253, 60256, F02K 300, F02K 900

Patent

active

047380993

ABSTRACT:
A missile bulkhead rupture disc assembly for disposition between adjacent solid propellant stages which are ignited in sequential order has a central aperture which receives an igniter for detonating the first stage of propellant. In preferred forms, the rupture disc comprises a pre-bulged frangible element having a first burst pattern with a circular line of weakness circumscribing a central portion of the element surrounding the igniter, and the element also has a second burst pattern comprising a plurality of lines of weakness which extend in a radial direction outwardly from the circular line of weakness of the first burst pattern, and which are spaced from each other to define generally sector-shaped petals or segments of the frangible element. After ignition of the second stage of propellant, the frangible element initially bursts along the circular weakness line of the first burst pattern and thereafter ruptures along the radially extending lines of the second burst pattern to enable simultaneous, non-fragmenting outward movement of each of the segments toward the casing of the missile so that the materials discharged from the second propellant stage can be immediately directed to the tail end of the missile.

REFERENCES:
patent: 1584523 (1926-05-01), Egbert
patent: 2523068 (1950-09-01), Simpson et al.
patent: 2842937 (1958-07-01), Clark
patent: 3704807 (1972-12-01), Lidgard
patent: 3834580 (1974-09-01), Ludwig et al.
patent: 3888079 (1975-06-01), Diesinger
patent: 4434905 (1984-03-01), Ou et al.
patent: 4505180 (1985-03-01), Hinrichs

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