Helicopter lifting and propelling apparatus
OwnerRaymond M. Tamurainventor
Life of this patent
Estimating the term…
Abstract
A helicopter rotor is formed with spars and ribs. The spars form parts of the surfaces, and long slots are constructed in the spars to provide suction and blower slots. Air is withdrawn in slots nearest the leading edge, and engine exhaust is conducted to a suction/blowing device which in turn blows air through slots near the trailing edge. Helicopter engine exhaust is mixed with air and fuel and is recombusted. Air is drawn into a recombustion chamber of a suction/blowing device from suction surfaces on the helicopter rotor blades. This suctioned air is then re-routed to the slots near the trailing edge and blown over the upper and lower surfaces of the blade.
Claims21
Helicopter apparatus comprising a rotor having upper and lower surfaces comprising rotor skin plates extending longitudinally on the rotor and being spaced one from another in chordwise directions, spars extending into the rotor between the surfaces, ducts extending along inernal sides of the rotor surfaces, the ducts having relatively rigid surface-supporting structure and having outward directed openings extending across the rotor surfaces, interrupting the rotor surfaces between edges of the rotor skin plates, the ducts thereby forming structural elements supporting the rotor skin plates, the outward directed openings of the ducts being arranged perpendicularly to the rotor surfaces in a one portion of the rotor and tangential to the rotor surfaces in another portion of the rotor surfaces, suction means connected to the ducts with perpendicualar openings for drawing gas into the ducts through those openings and blowing means connected to the ducts with tangential openings for flowing gas out of the tangential openings, driving means connected to the suction means and to the blowing means for accelerating gas through the suction and blowing means.
Dependencies are inferred from the claim text.