Talk:Flight Design CTSW

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[edit] Range number can't be right

Range is listed as 2000 km. If this is at cruising speed of 207 km/h, then the plane must fly for 9.6 hours.

Cruising speed is at 75% power, or 75 horsepower. 9.6 hours like this is 724 hp-hours. If that flight burns 33 gallons of gasoline, it's 21.9 hp-hours/gallon.

That's not right. Gasoline engines deliver about 11 hp-hours/gallon. Something is off by a factor of 2.

Iain McClatchie (talk) 11:47, 8 February 2008 (UTC)