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    • 1. 发明授权
    • Cooled pintle assembly
    • 冷却紧固件总成
    • US3712063A
    • 1973-01-23
    • US3712063D
    • 1970-03-24
    • BELL AEROSPACE CORP
    • ANDRYSIAK SMCKENNA R
    • F02K9/52F02K9/58F02K9/64F02K9/86F02K9/97F02K
    • F02K9/86F02K9/52F02K9/58F02K9/64F02K9/97
    • To maintain a constant pressure in the combustion chamber of a rocket engine, which operates with either liquid and/or metallized propellants, a cooled throat pintle assembly is provided to vary the throat area in an E-D nozzle. The pintle design is a composite structure consisting of a Columbium alloy central rod member having in its cylindrical and injector portions a Grafoil intermediate layer and a Carbitex outer layer. The throat portion of the pintle assembly consists of stacked pyrolytic graphite washers having a spiral formed coolant passages. The throat, cylindrical, and injector portions of the pintle are gas film cooled with fuel-rich gases that are ducted through the center of the pintle from a pressurization system gas generator. The injector or forward end of the pintle is cooled by a gas film exiting from the pintle housing. The throat portion of the pintle is cooled by gases exiting through spiral grooves in the washers.
    • 为了在与液体和/或金属化的推进剂一起操作的火箭发动机的燃烧室中保持恒定的压力,提供冷却的喉咙组件以改变E-D喷嘴中的喉部区域。 枢轴设计是由Columbium合金中心杆构件组成的复合结构,其中其圆柱形和喷射器部分具有Grafoil中间层和Carbitex外层。 枢轴组件的喉部由具有螺旋形冷却剂通道的层叠热解石墨垫圈组成。 枢轴的喉部,圆柱形和注射器部分是用富含燃料的气体冷却的气膜,其通过来自加压系统气体发生器的枢轴的中心导管。 枢轴的注射器或前端由从枢轴外壳排出的气膜冷却。 枢轴的喉部由通过垫圈中的螺旋槽排出的气体冷却。