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What's the relationship between mach number and drag force on an airplane?

The plot you show is actually typical for rockets or missiles. Here's the CD0 for AIM-9 at sea level: As for F-16 and Mirage-2000, you'll find a pretty flat curve above M1.0 as the Cx0 and CD0 (...
LJQCN101's user avatar
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3 votes

Why can you only hear an aircraft after the shockwave passes?

You seem to have such a grasp on this question that it seems impossible that you don't actually understand. I'd really like to understand what is missing between what you know and what you're trying ...
Rob McDonald's user avatar
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3 votes
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Why can you only hear an aircraft after the shockwave passes?

Why do you only hear engines and other noise from a jet going supersonic after the plane has passed? If the object making noise is far enough, then you always hear it after it has passed, no matter ...
sophit's user avatar
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1 vote

Why can you only hear an aircraft after the shockwave passes?

if you change the shape of the nose of the aircraft ... It seems that is what NASA is doing here. So now one is reducing shock wave amplitude (how loud it is), not the shape of the cone, which ...
Robert DiGiovanni's user avatar
3 votes
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How are shockwaves able to refract?

The quote you cite does not say refraction. It says rarefaction. Refraction (of light) is when light bends because it transitions from one material to another -- say air to water. I do not think ...
Rob McDonald's user avatar
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3 votes
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What happens when shockwaves interact?

Remember, shockwaves and expansion fans are all about turning the flow. The required turning can be observed from the boundary conditions (the walls). Each shock / fan exists to turn the flow from ...
Rob McDonald's user avatar
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2 votes
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Why did the CF-105 cease production when it had such promising potential?

The main reason is the same as why many other jetfighters of that era were cancelled, the XB-70 being another emblematic example. The reason is easy and came (more or less) unexpected, with the Arrow ...
sophit's user avatar
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