초록

Extendible exit cones for reaction motor nozzles of the telescoping or “Boy Scout cup”type are provided whereby positive locking means are used to maintain the exit cones in their extended positions against the aerodynamic and internal pressure forces experienced by the nozzle.

대표청구항 ▼

A telescoping extendible nozzle exit cone assembly comprising, in combination, an inner exit cone and at least one outer exit cone, said outer cone being mounted around said inner cone and movable with respect thereto from a first stowed position to a second deployed position and locking means for l

A telescoping extendible nozzle exit cone assembly comprising, in combination, an inner exit cone and at least one outer exit cone, said outer cone being mounted around said inner cone and movable with respect thereto from a first stowed position to a second deployed position and locking means for locking said outer exit cone to said inner exit cone in the deployed position, said locking means comprising: (a) a substantially constant external diameter locking ramp formed about the periphery of said inner core, said ramp terminating at its rearward end in an outwardly directed locking shoulder; (b) a plurality of retaining fingers mounted about said inner cone, overlying said locking ramp portion and being biased away therefrom, said retaining fingers terminating a predetermined distance from said locking shoulder; and (c) a substantially constant internal diameter rim portion formed on the forward portion of said outer cone, said rim portion, at its forward end, terminating in an inwardly directed locking step sized to be received in locking relationship between the end of said retaining fingers and said locking shoulder.