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US 6,148,606 AGranted
Low-vulnerability solid-propellant motor
AssigneeCelerg
InventorsAugustin Grossi, Patrick Fiandesio
Life of this patent
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AssigneeCelerg
InventorsAugustin Grossi, Patrick Fiandesio
Estimating the term…
The present invention relates to a low-vulnerability solid-propellant motor (1) comprising a charge (11) of solid propellant, a heat shield (2) covering the inside of a metal structure with a front end wall (3) and a rear end wall (4) which carries at least one nozzle (10), the said front and rear end walls being fastened to a cylindrical shell (5) having wide apertures which are circumferentially distributed and temporarily sealed by sealing plugs (8). The object of the present invention is to provide a motor which has a simple structure and avoids the use of detection and actuation means for freeing the plugs. The motor according to the invention is such that the sealing plugs (8) are held in the apertures between the heat shield and a composite winding (7) of fibres impregnated in a matrix which surrounds the cylindrical shell (5).
Low-vulnerability solid-propellant motor (1) comprising a charge (11) of solid propellant, a heat shield (2) covering the inside of a metal structure with a front end wall (3) and a rear end wall (4) which carries at least one nozzle (10), the said front and rear end walls being fastened to a cylindrical shell (5) having wide apertures (6) which are circumferentially distributed and temporarily sealed by sealing plugs, which motor is characterized in that the sealing plugs (8) are held in the apertures (6) between the heat shield and a composite winding (7) of fibres impregnated in a matrix which surrounds the cylindrical shell (5), the said plugs (8) being freed by accidental degradation of the composite winding (7).
Dependencies are inferred from the claim text.