FIELD: transportation.
SUBSTANCE: said utility invention relates to aviation, namely to a jet slot blade of the helicopter rotor. A jet slot blade of the rotor of a helicopter with a jet-driven rotor and a starter generator, formed by a foil, in which a longitudinal air duct is made, connected with longitudinal slots of the air intake and the exit nozzle, opposite to which guide vanes are located. In the first version the slot air intake is made along the trailing edge, in the lower end portion of the blade, and the slot-type exit nozzle is made along the leading edge, in the top root portion of the blade. In the second version the slot air intake is made along the trailing edge, in the lower root portion of the blade, and the slot-type exit nozzle of the air duct is made along the leading edge, in the top end portion of the blade. In the third version two diametrically located blades of the helicopter rotor have a common longitudinal air duct, two parts of which communicate through a tubular hub at the helicopter rotor shaft.
EFFECT: increased jet engine power efficiency, simplification of design of blades of jet-driven rotors, complete relieve of helicopter shell of rotor blade countertorque, possibility to replace airflow swash plate by stepwise supply of fuel to blade jet engines, and removal of separate compressed air source (compressor).
17 cl, 9 dwg
