METHOD OF AIRCRAFT TAKE-OFF Russian patent published in 2008 - IPC B64D31/12 B64D33/02 

FIELD: engines and pumps.

SUBSTANCE: in a process of aircraft propulsion along a take-off runway the true speed of an aircraft movement is being constantly measured and correspondingly the consumption of air through air inlet of an engine is being changed by means of adjusting frequency of a low pressure rotor rotation to values when at a given speed a vortex flow between an air inlet and air field surface does not occur. Adjusting of a rotation frequency of the rotor of a low pressure compressor is stopped at a threshold value of a true speed of an aircraft, when a vortex flow is blown off, and an engine is set to maximum modes of operation. In case of engines with a thrust vector control a gas jet of a jet nozzle additionally in the beginning of steering is inclined upward at an angle providing unloading of a front pole of undercarriage while maintaining controllability of an aircraft.

EFFECT: purpose of the invention is to eliminate ingress of particles of airfield trash into an engine air inlet during aircraft takeoff.

2 cl