Viper Falcon
Encyclopedia
Viper Falcon is the designation of an American
United States
The United States of America is a federal constitutional republic comprising fifty states and a federal district...

 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 Viper Falcon program was started in 1960. The Viper Falcon has a ceiling of 120 kilometres (74.6 mi) and a length of 3.50 meters.
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