VERTICAL TAKE-OFF AND LANDING AIRCRAFT Russian patent published in 1999 - IPC

FIELD: aviation. SUBSTANCE: aircraft has wing with two outer panels and center section and fuselage with nacelle secured on leading edge of center section. Two tail booms are secured on trailing edge of this section. Aircraft is also provided with landing gear, tail unit including two fins with rudders and stabilizer with elevator and wing ailerons. Elevons are mounted on tail booms near fins. Power includes two engine connected with propellers by means of transmissions. Each engine is immovably secured in center section of respective tail boom in such way that axis of its exit nozzle is directed to point of intersection of respective fin with respective elevon; propellers revolving in opposite directions have similar diameter. Propellers are mounted along one axis in recess of center section above center of gravity of aircraft; propellers are located in annular channel which is swingable in plane of symmetry of aircraft. Angle of swinging of annular channel ranges from 95 to 100 deg. EFFECT: enhanced safety of flight. 3 cl, 3 dwg