Tilting mast in a rotorcraft

Details Tilting mast in a rotorcraft Tilting mast in a rotorcraft

2006-11-21

2006-11-21

Dinh, Tien (Department: 3644)

Aeronautics and astronautics

Aircraft, heavier-than-air

Helicopter or auto-rotating wing sustained, i.e., gyroplanes

Reexamination Certificate

active

07137591

ABSTRACT:
A rotorcraft includes a fuselage, a rotor assembly, a tail section connected to the fuselage, a propulsion system including an engine mounted to the fuselage, and a wing mounted to the fuselage. The rotor assembly includes a rotor having either a single or a plurality of rotor blades which can produce a resultant force vector which can pass through or near the center of gravity of the rotorcraft, and a spindle to connect the rotor with a flight control assembly. The rotor assembly also includes a tilting mast assembly having a tilting mast frame also connected to the spindle to support the rotor. The tilting mast tilts the rotor and provides cyclic control through a cyclic control linkage connected to the tilting mast frame. A mast control cylinder is provided to tilt the tilting mast assembly.

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Article on web page titled Aero-Naval Research, regarding Split Axial Rotor Dynamics, Propulsion Control and Tilt Masting, USP 5,740,987, found at www.aero-naval.org/history.

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