The X-15 speed 5,000+ mph been flown. fastest rocket powered
Helios probe 100,000+ mph Never flown.
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Jet or rocket powered, with a pressurized cabin.
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Italy did not use rocket missile or rocket-powered aircraft in
World War II. They may well have fired off mortar shells which were
and are essentially rockets- but so did most of the combatants.
Italy had some neat submarines, but not rockets.
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He as flying the The Bell X-1, a rocket engine-powered aircraft.
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There is a whole series of experimental aircraft, such as the
Bell X-1 and the rocket powered X-15 aircraft, where the "X" stands
for "experimental."