| 摘要 |
FIELD: transportation. ^ SUBSTANCE: suggested thermal conditioning system contains compressed air feed lines (1) and compressed nitrogen feed lines (7), control pneumatic shield and pressure reduction unit. Pneumatic shield includes two pairs of parallel lines with electropneumatic valve (18, 19) installed in each of it, pressure indicator (20, 21) and one-way valve (22, 23). Pressure reduction unit contains two parallel lines (26) with electropneumatic valve (27) installed in each of it, gas-pressure reducer (29), pressure indicator (31), safety relief valve (32) and one-way valve (33). Safety relief valve (32) is linked with drain pipeline (34) which is equipped with pressure indicator (35) electrically connected with each electropneumatic valve and one-way valve (36). According to suggested method, after filling carrier booster with fuel components, compressed air pressure up to 40 MPa is reduced to 8-10 MPa, and not later than in 15 min. before "Lift-off contact" command compressed air supply is shut off and compressed nitrogen with pressure up to 40 MPa is supplied, which pressure is also reduced to 8-10 MPa. When safety relief valve of one of the pressure reducing unit lines actuates, compressed gas supply over given line is shut off and supply over parallel line of this unit is opened. Likewise, when failure is detected in one of the pneumatic shield feeding lines, compressed gas supply over this line is shut off and it's supply over parallel line is opened. ^ EFFECT: increase of reliability and operating characteristics in the launch preparation phase and during launch of carrier boosters. ^ 2 cl, 2 dwg |
