| 摘要 |
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.
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