Author: oldcoot
Date: Aug 13, 2008 11:35
...is due to frontal area and what due to skin drag at supersonic speeds for a longish train, say 400 feet long? How does the sonic boom spread for an object moving at ground level...present the largest percentage of drag. Once the nose has "punched the hole", the length of the train should present little additional drag. A Google under 'supercavitating torpedo' presents a good analogy. And for...
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