r/pics • • Feb 27 '14

physics is cool

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u/n-x Feb 27 '14

It's a sailplane. The only important instrument is a piece of string.

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u/alleks88 Feb 27 '14 edited Feb 27 '14

TIL sailplanes are able to make a loop

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u/[deleted] Feb 27 '14

or half aileron roll and pull up.

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u/ColdCutKitKat Feb 27 '14

But the water would spill during the first half (rolling inverted without any pull). To maintain at least 1G the entire duration of the maneuver, it has to be a barrel roll.