VACUUM TEST BENCH FOR SPACE LIQUID-PROPELLANT ENGINE FIRING TESTS Russian patent published in 2016 - IPC F02K9/96 G01M15/14 

FIELD: engines.

SUBSTANCE: invention relates to test bench equipment and can be used during testing of space-mission liquid-propellant engines (LPE), connected with determination of LPE and power plant (PP) components heat modes. On for LPE thermal testing vacuum test bench comprising vacuum chamber 1 with fixture 2 for installation of LPE 3 with nozzle, having radiation-cooled nozzle (RCN) 4, gas-dynamic pipe 5 with ejector 6, shutoff valve 7 in gas-dynamic pipe (GDP) channel, cooled screens 8 on vacuum chamber 1 inner walls, vacuum system 9, main line with on-off valve 10, which connecting gas-dynamic pipe 5 cavity between RCN 4 and shut-off valve 7 with vacuum system 9. At RCN 4 with GDP 5 joint edge thermal expansion compensator is made in form of thin-walled cylindrical or truncated-conical membrane 11 of heat-resistant steel designed for radial expansion RCN 4, tightly connected on its edge with RCN 4 wall by welding, and on other side, is with surrounding GDP 5 through cylindrical steel spacer 12, designed for RCN 4 axial expansion, is thin-walled bellows 13 with flange 14 tightly (through seal 15) connected with flange 16 on gas-dynamic pipe 5 cooling circuit cooled outer wall, wherein GDP cavity from RCN 4 to shut-off valve in GDP 5 channel is connected to vacuuming system 9 via on-off valve 10.

EFFECT: invention provides improved functional capabilities relating to providing heat exchange conditions most complete simulation, corresponding to actual conditions during space LPE and PP firing tests.

1 cl, 2 dwg