LIQUID PROPELLANT ENGINE SWING ASSEMBLY Russian patent published in 2015 - IPC F02K9/66 

FIELD: aircraft engineering.

SUBSTANCE: proposed assembly is arranged between the chamber and gas duct including sealing device, spherical fixed case, moving barrel, fixed and moving shields to make a lengthwise channel and frame gimbal. The latter can swing with the chamber and sealing device in two mutually perpendicular planes relative to common centre and gas duct. In compliance with this invention, said sealing device is functionally integrated with structural elements and includes structural leading bearing insert. The latter is rigidly secured at said barrel and has ball surface equidistant from the case spherical surface. Said surface is coated with material of low friction factor and high sealing property, for example, "Aphtalom". Besides, frame gimbal incorporates adjusting spacers to be fitted between gimbal forks and spherical case to control axial force distribution at ball insert and gimbal. Fixed shield with gas duct inlet nozzle composed by confuser with minimum diameter some 25-30% smaller than inlet diameter with further changeover to diffuser while moving shield is composed of diffuser with regenerative cooling channels.

EFFECT: simplified design, compact design, decreased weight and sizes.

4 cl, 2 dwg