Patent ID: 7661625
Filing Date: 2010-02-16
Classification: F42B

Abstract:
1. A jettisonable nosecone for a missile, said nosecone being longitudinally split into at least two separate parts ( 15 , 16 ), and detachable connecting means for holding together said at least two separate parts ( 15 , 16 ), the connecting means being releasable for actively moving the at least two separate parts ( 15 , 16 ) away from one another, said connecting means comprising a connecting pin ( 60 ) which is pyrotechnically activatable, said connecting pin ( 60 ) including a hole ( 65 ), a propellent charge ( 66 ), being arranged in said hole to enable gases to be released on initiation of the propellent charge ( 66 ) for driving said at least two parts ( 15 , 16 ) away from one another, said connecting pin ( 60 ) having a weak point ( 63 ) in the central portion thereof facilitating rupture of said connecting pin responsive to initiation of said propellent charge ( 66 ), said at least two separate parts ( 15 , 16 ) being held together by the connecting pin ( 60 ) threadinaly engaging hollow cylinders ( 54 , 55 ) which are axially slideably inserted into one another and form an internal cavity ( 57 ) extending about a central portion of said connecting pin ( 60 ), opposite outer ends of said hollow cylinders ( 54 , 56 ) contacting inner surface portions of, respectively, said at least two separate parts ( 15 , 16 ) the hole ( 65 ) in the connecting pin ( 60 ) including at least one opening ( 64 ) communicating with the internal cavity ( 57 ), via which the gases which are released on initiation of the propellent charge ( 66 ) and which drive the hollow cylinders ( 54 , 55 ) axially away from one another upon rupture of said connecting pin, flow into and expand within the internal cavity ( 57 ) for causing said hollow cylinders to force said at least two separate parts ( 15 , 16 ) apart from each other.