EXTENDABLE TWO-SECTION NOZZLE HEAD PIECE OF ROCKET ENGINE Russian patent published in 2011 - IPC F02K9/97 

FIELD: engines and pumps.

SUBSTANCE: extendable two-section nozzle head piece of rocket engine includes fixed part, extendable flared end, sealing element, collet and flared end extension system. Sealing element is made from heat-resistance material with low deformation properties, for example in the form of braided rope from thermal expanded graphite. Extendable flared end on the side of combustion chamber of the engine includes shank with inner surface facing the fixed part and interacting during the extension of head piece with sealing element and having cylindrical section passing to the cone the minimum diameter of which does not exceeds maximum diameter of sealing element.

EFFECT: invention allows improving reliability of nozzle head piece of rocket engine owing to increasing the tightness of the joint of fixed part and extendable flared end.

2 dwg