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Know your PT6A - Pratt & Whitney Canada

Know your PT6A - Pratt & Whitney Canada

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Recommended <strong>PT6A</strong> Engine Power Management<br />

It is a general characteristic of aircraft that for a particular gross<br />

weight, the power required for take-off varies comparatively little with<br />

ambient conditions. <strong>PT6A</strong> engines are typically “flat rated” to allow for<br />

the maximum possible take-off power required by the aircraft over a wide<br />

range of ambient temperatures without having to work the engine harder<br />

than is necessary at any time.<br />

Take-off<br />

Max.<br />

Continuous<br />

Max Climb<br />

Max Cruise<br />

Gearbox Limit<br />

POWER<br />

Ambient<br />

Temperature<br />

and Altitude<br />

The flat-rated power is available up to the thermal capability of the<br />

engine, specified as an ambient temperature and altitude.<br />

43

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