FIELD: engines and pumps.
SUBSTANCE: invention relates to air vent intake incorporating movable lapping device. Proposed device incorporates, at least, one air vent channel (12) with air intake hole (14) and serves to vent, at least, one flight vehicle closed chamber (11) by fresh air coming, via air intake hole, into the channel and running therefrom into vented chamber. Cross section of aforesaid channel (12) is controlled automatically depending upon flight vehicle speed and altitude. The proposed device incorporates lapping devices (17) furnished with controlled movable element linked up with the said channel to vary its cross section.
EFFECT: optimum ventilation of turbojet engine closed chamber.
16 cl, 19 dwg
