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The z-15's top speed is Mach 5. no way they said it was way faster than any other plane so it can't be mach 5. becuase i heard it was mach 9.7. 9000 mph.

but i just don't understand why NASA doesn't improve and turn it into a space plane because its not going to take a lot of work and if its really hard to control then how do they control the space shuttle. thats a beter way to make space travel.

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12y ago
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AARON RAMNANDAN

Lvl 2
3y ago

xhbvnmznbz nnvbhbjfdzbufhjghguhrhuh rufuahjhgurhjgvjcbvjdujvbrhauvhjdvjebdhbh uehudshjsahfuehfJ

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12y ago

Mach 6.72 over 5,000 mph

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12y ago

4,519 mph.

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Q: What was the fastest speed ever recorded for the North American X-15?
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