Igniter pellet cup
AssigneeMorton Thiokol, Inc.
InventorGeorge L. Stevens
Life of this patent
Estimating the term…
Abstract
A consumable sealed plastic cup containing ignition pellets is assembled into end cap at the forward end of a solid fuel rocket motor with sufficient clearance to allow leak test gas to bypass it and thereby expose the port seals of the through bulkhead initiators for leak checking.
Claims7
A rocket motor having a casing containing solid propellant and including an end cap and a closure for the casing, the closure being attached to the forward end of the casing and having an inner wall and an outer wall and including at least one port extending between the inner and outer walls with a through bulkhead initiator sealed in the port, the end cap being attached to the inner wall of the closure and having a cavity formed therein with the cavity in communication with the port, and further including an igniter comprising a plastic cup having a chamber containing ignition pellets and positioned in the cavity in the end cap with clearance between said plastic cup and the cavity being provided to allow leak test gas to bypass said cup and thus expose the seal of the through bulkhead initiator for leak checking.
Dependencies are inferred from the claim text.