Model rocket motor retainer apparatus

Abstract

A model rocket motor retainer apparatus for model rockets comprised of two components, a cylindrical retainer body ( 1 ) and an aft closure ring ( 2 ); wherein the retainer body is attached to a rocket motor tube ( 3 ), and the aft closure ring attaches into the aft end of the retainer body ( 3 ). Installation and tightening of the aft closure ring traps the rocket motor ( 4 ) between the aft closure ring and the rocket motor tube, thereby positively retaining the motor.

I claim:  
     
         1 . A model rocket motor retainer apparatus comprising a retainer body and an aft closure ring attached to said retainer body, as a means for retaining a model rocket motor within a rocket airframe.  
     
     
         2 . A model rocket motor retainer apparatus per  claim 1  wherein said aft closure ring further includes appropriately sized through-bores as a means to accommodate rocket model motors of various sizes.  
     
     
         3 . A model rocket motor retainer apparatus per  claim 1  wherein said retainer body further includes a minimal outside diameter as a means to provide improved aerodynamic characteristics through drag reduction.  
     
     
         4 . A model rocket motor retainer apparatus per  claim 1  wherein said retainer body further includes internal threading on the aft inside diameter as a means to accommodate rocket motors with rear thrust rings of varying lengths.  
     
     
         5 . A model rocket motor retainer apparatus per  claim 1  wherein said retainer body further includes an outer conical, ogive, or similar contour, that aerodynamically transitions from a rocket motor tube diameter to an airframe tube diameter for use on rockets with an airframe tube of larger diameter than the motor tube.  
     
     
         6 . A model rocket motor retainer apparatus per  claim 1  wherein said retainer body further includes an outer contour shaped to simulate a larger model rocket motor with a thrust ring as a means for adapting smaller rocket motors for installation in larger motor tubes.