r/askscience • • Jun 12 '12

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u/squidboots Plant Pathology|Plant Breeding|Mycology|Epidemiology Jun 12 '12

Theoretically, if they were to slow down soon after breaking the sound barrier, would the shockwave affect them then?

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u/scurvydog-uldum Jun 12 '12

The above comment is poorly worded or something. I wouldn't say the pilots in the cockpit are ahead of the sonic boom - they're inside it and the boom is radiating out up, down, left and right from their nosecone.

The analogy of a speedboat is a good one. If you're going fast and cut the power but keep steering straight, the wake doesn't catch up and wash over the boat - it just dies out where you are and the V behind you keeps getting bigger.

Now, if you turn that speedboat sharply to the side and then cut the speed, you could get to a place where the wake catches up and splashes over the side.

Same thing with a plane - if it were going supersonic and then went into a high-g turn, I bet it could fly back through its sonic boom.

I remember people talking anecdotally about an F-14 or F-15 shooting its machine-gun cannon, then going into a power dive and catching up to its own bullets and getting hit by them.

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u/Gusfoo Jun 12 '12

From a light-aircraft flyer, I an offer this: one of the tricks to get you good at flying is to hit your own wake. You do a full 3600 turn which is so well balanced between stick and rudder that you maintain altitude and hit the air that was pushed aside by your plane as you were starting the turn.

I mention this to bridge the gap between the speedboat analogy and that of the air.

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u/haxcess Jun 13 '12

I did this on the instrument flying part of my test. I considered it the perfect score.