Deflection cone in a reaction drive helicopter
AssigneeRj Helicopter Corporation
InventorDavid J. White
Life of this patent
Estimating the term…
Abstract
A rotor hub for a reaction drive type helicopter includes a cylindrical sidewall having a top and an open bottom which defines an interior volume. A top plate closes the top of the cylindrical sidewall, and at least two pipe sections extend outwardly from the cylindrical sidewall. Each pipe section extends through the sidewall in communication with the interior volume. A horizontal vane is carried in an inlet of the pipe section and extends horizontally across the inlet. A three dimensional body extends downwardly from a central axis of the top plate into the interior volume.
Claims18
A rotor hub for a reaction drive helicopter, the rotor hub comprising:
- a cylindrical sidewall having a top and an open bottom, the cylindrical sidewall defining an interior volume;
- a top plate closing the top of the cylindrical sidewall;
- at least two pipe sections extending outwardly from the cylindrical sidewall, each pipe section extending through the sidewall and having an inlet in communication with the interior volume;
- at least one vane carried in the inlet of each of the at least two pipe sections and extending across the inlet;
- and
- a three dimensional body extending downwardly from a central axis of the top plate into the interior volume.
A rotor hub for a reaction drive helicopter, the rotor hub comprising:
- a cylindrical sidewall having a top and an open bottom, the cylindrical sidewall defining an interior volume;
- a top plate closing the top of the cylindrical sidewall;
- at least two pipe sections extending outwardly from the cylindrical sidewall, each pipe section extending through the sidewall and having an inlet in communication with the interior volume;
- a horizontal vane carried in the inlet of each of the pipe sections and extending horizontally across the inlets thereof;
- and
- a three dimensional body extending downwardly from a central axis of the top plate into the interior volume.
A reaction drive helicopter comprising:
- a body;
- an engine carried by the body for producing a stream of compressed gas;
- a hollow rotor mast carried by the body for receiving the stream of gas, the mast terminating in a rotor hub;
- wherein the rotor hub comprises:
- a cylindrical sidewall having a top and an open bottom rotatably coupled to the hollow rotor mast, the cylindrical sidewall defining an interior volume;
- a top plate closing the top of the cylindrical sidewall;
- at least two pipe sections extending outwardly from the cylindrical sidewall, each pipe section extending through the sidewall and having an inlet in communication with the interior volume;
- at least one vane carried in the inlet of each of the at least two pipe sections and extending across the inlet;
- and
- a three dimensional body extending downwardly from a central axis of the top plate into the interior volume;
- and
- a plurality of blades, each blade of the plurality of blades having a proximal end coupled to one of the at least two pipe sections, a distal end, and a passage extending from the proximal end to the distal end terminating in a blade tip, the passage in fluid communication with the hub through the pipe section for ducting gasses from the mast to the blade tip.
Dependencies are inferred from the claim text.