Helicopter preheat assembly

Details Helicopter preheat assembly Helicopter preheat assembly

1986-08-06

1988-10-11

Barefoot, Galen

Aeronautics and astronautics

Miscellaneous

219202, 1841041, B64D 4700

Patent

active

047765291

ABSTRACT:
A preheat apparatus for a helicopter wherein certain critical helicopter components are preheated preparatory to takeoff of the aircraft. The critical components include the main rotor gear case, the intermediate gear case, the tail rotor gear case, the oil tank and cooling assembly and the engine gear cases. In certain aircraft, these also include the fuel control unit and the drive reduction gear case. Heat pads are installed with respect to the critical components in strategic locations and are sized and shaped to fit the component. The heat pads are connected by wiring harness that is connected to an external source of electrical power.

REFERENCES:
patent: 1806442 (1931-05-01), Bell et al.
patent: 2698374 (1954-12-01), Carpenter
patent: 3213263 (1965-10-01), Strenbergen
patent: 3416633 (1968-12-01), Swearingen
patent: 3953707 (1976-04-01), Tanis
Aviation Safety, Oct. 1, 1984, vol. IV, No. 19, Reprint.

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