| 摘要 |
<p>A rocket thruster assembly 10a nozzle and a valve assembly. The valve includes a pintle with a head portion 60 having a truncated substantially conical surface region 60a, 60b opposing and concentric with converging and throat regions of the nozzle to provide a variable effective throat area therebetween. The truncated portion of the head portion has an outer edge defining a bleed passageway 80 opening communicating with a primary bleed passage leading through the head portion to a bleed-cavity 58 located on an opposite side of the head portion. During activation of a rocket motor to which the rocket thruster is coupled, gases imparting a load on the head portion pass through the primary bleed passage to the opposite side of the head portion for counterbalancing loads acting on the head portion. A thrust control subassembly moves the pintle axially for changing the effective throat area.</p> |
