Nodal beam inertial flexure

Details Nodal beam inertial flexure Nodal beam inertial flexure

1974-06-03

1976-03-23

Marbert, James B.

Spring devices

Compound

Rubber

267141, 188 1B, F16F 310

Patent

active

039456285

ABSTRACT:
A helicopter having a lift unit including a multiblade helicopter main rotor system and a nodalized module including a beam driven in response to blade developed vertical forces has a fuselage unit connected to the beam only at vibration nodal points along the beam. The coupling between the lift unit and the fuselage comprises two rigid arms which form the beam and which extend toward one another from the nodal points. A multilayered flexible beam section interconnects the arms to accommodate beam bending in the flexible section. A rigid member is attached to each of the arms at drive points intermediate the nodal points in supporting relation from the lift unit.

REFERENCES:
patent: 3330519 (1967-07-01), Thorn
patent: 3460628 (1969-08-01), Tankersley
patent: 3730509 (1973-05-01), Jorn
patent: 3842945 (1974-10-01), Potter

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