Quote:
Originally Posted by ECONORAM
I've spoken with a pilot or two about retracting the gear on take-off. Each one said they'd get the gear up and take the additional altitude that comes with that--good in the event an engine goes out.
What I found interesting was that the hp required increases with V cubed. I'd already done the math for the drag equation for my truck...to see what drag I needed to aim for in order to achieve the fuel mileage I'm after. But v^3? Wow. Some good reading. Thanks for sharing.
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Walter Korff of Lockheed explained the power increase from a doubling of velocity as:
*you're hitting twice as much air
*you're hitting it twice as hard
*and you're hitting it twice as often.
*2X2X2=8
or, 2-cubed (velocity-cubed)