Hopi Dart
Hopi Dart is the designation of an American sounding rocket
Sounding rocket
A sounding rocket, sometimes called a research rocket, is an instrument-carrying rocket designed to take measurements and perform scientific experiments during its sub-orbital flight. The origin of the term comes from nautical vocabulary, where to sound is to throw a weighted line from a ship into...

. The Hopi Dart has a length of 3.30 meters, a diameter of 0.11 meters and a ceiling of 116 km. The Hopi Dart was launched 21 times during 1963 and 1964.
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