Patent ID: 6915626
Filing Date: 2005-07-12
Classification: F02K,Y10T

Abstract:
1. A blanking-plug system for blanking off an orifice of a duct for introducing combustion air into the combustion chamber of a ramjet, said ramjet being able, in an initial phase of operation corresponding to said ramjet being brought up to speed, of operating as a rocket using a consumable auxiliary thruster arranged in said combustion chamber then, when said ramjet reaches a predetermined speed, of operating as an actual ramjet with fuel and combustion air injected into said combustion chamber, and said blanking-plug system comprising: at least one blanking plug comprising a glass plate able to completely blank off said orifice during said initial phase of operation of the rocket; and at least one destroying device capable of destroying said glass plate of said blanking plug so as to open said orifice, for operation as a ramjet, wherein said blanking plug additionally comprises a plurality of elastomer protective elements which are fixed on the outer face of said glass plate, these elements being separated from one another by a predetermined maximum distance at most, and completely covering said outer face.