An undercarriage leg in flight produces 3 lbs of drag at 100kts. If speed is increased to 200kts the drag would be
- 12 lbs.
- 9 lbs.
- 6 lbs.
Explanation from PART66Online
Drag varies with the square of the airspeed, so doubling the speed multiplies the drag by four. Starting from 3 lbs at 100 kt, the drag at 200 kt is 3 x 2 squared, which equals 3 x 4, giving 12 lbs. Answers of 9 lbs or 6 lbs ignore the square-law relationship.
A
arifadli8 asked · 6 Oct 2013
how to calculate...
Community Comments (2)
P
PART66Online
6 Oct 2013
H
Hishamguda
14 Oct 2013
X= (200square * 3) / 100square
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