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Turboprop - High Speed Cruise Definition

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Turboprop - High Speed Cruise Definition

Old 25th Oct 2020, 19:03
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Turboprop - High Speed Cruise Definition

Is there a standard method or definition for turboprop high-speed cruise speeds?

Long Range Cruise speed is that at which the SAR is 99% of the Max Range Cruise SAR,

However, HSC speed does not seem to follow an obvious SAR = x% MRC relationship and is not necessarily the speed achievable at maximum cruise power - the Q400 Fuel efficiency manual shows HSC as different to Max Cruise speed.

Is the highest speed at which a minimum climb requirement (100 or 300fpm)?
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