FIELD: device used for thermostating space vehicles with gas (air) located under protective fairing of heavy class space rockets in course of transportation to point of launch, preparation for launch and launch, as well as, for bleeding gas from under protective fairing during flight of rocket over injection trajectory. SUBSTANCE: hatch cover is secured to protective fairing on space rocket by means of hinges with space vehicle inside it; cover is provided with servo-amplifier secured on protective fairing. Servo-amplifier is made in the form of compression spring fitted on rod which is provided with stroke limiter at one side and is connected with slot on spring-loaded cover by means of axial hinge on other side. Rod turns guide bush; compression spring is supported by guide bush on one side and is held in compressed state by stop fitted on interlocking device on other side. Interlocking device is rigidly connected with lever of change-over leverage mechanism provided with flexible member. One lever of leverage mechanism is provided with calibrated weight. EFFECT: enhanced reliability. 1 dwg
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