Adapter device for a rocket engine nozzle having a movable diverging portion
AssigneeSnecma Propulsion Solide
InventorAntoine Hervio
Life of this patent
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Abstract
An adapter device for controlling a rocket engine nozzle under conditions of external pressure that can lead to the jet separating inside the nozzle, the nozzle being fitted with a diverging portion that is movably mounted relative to a stationary portion of the nozzle, thrust deflection then being achieved by swivelling the diverging portion so as to deflect the jet of combustion gas in contact with the inside wall of the diverging portion. The device includes a structure disposed inside the diverging portion in such a manner as to reduce the diverging nature of the flow section thereof and to increase the bearing area of pressure forces exerted by the jet on the diverging portion during swivelling thereof.
Claims12
An adapter device for controlling a rocket engine nozzle under conditions of external pressure that can lead to the jet separating inside the nozzle, the nozzle being fitted with a diverging portion that is movably mounted relative to a stationary portion of the nozzle, thrust deflection then being achieved by swivelling the diverging portion so as to deflect the jet of combustion gas in contact with the inside wall of the diverging portion, wherein a structure is disposed inside the diverging portion so as to reduce the diverging nature of the flow section thereof and so as to increase the area over which pressure forces are exerted by the jet on the diverging portion when the diverging portion is swiveled.
An adapter device for controlling a rocket engine nozzle under conditions of external pressure that are such that they can lead to the jet separating inside the nozzle, the nozzle being fitted with a diverging portion movably mounted relative to a stationary portion of the nozzle, thrust deflection then being achieved by swivelling the diverging portion in such a manner as to deflect the combustion gas jet in contact with the internal wall of the diverging portion, wherein an annular part is fastened to the end of the diverging portion at the gas outlet section, said annular part having portions projecting towards the inside of the diverging portion so as to form, during swivelling of the diverging portion, an additional area secured to the diverging portion and against which the pressure forces exerted by the jet can bear.
Dependencies are inferred from the claim text.