New Ware Construction kit of Vanguard launch vehicle NW071
Designed to launch America's first satellite during the International Geophysical Year, the Vanguard launch vehicle was based on Viking sounding rocket. The second stage was powered by a variant of Aerojet General's Aerobee Hi. The third stage was a small solid propellant motor. The Vanguard configuration was selected over the Jupiter C and Atlas vehicles because a missile was deemed inappropriate for an entry in an international scientific project.
By december 6, 1957, the first complete three stage Vanguard rocket was ready to fly. At 11:44 AM, Vanguard rocket TV-3 crept off the pad at Cape Canaveral. Within seconds, the rocket fell back to its pad and exploded.
On March 17, 1958, Vanguard's luck would change. At 7: 15 AM, Vanguard rocket TV-4 launched a third grapefruit satellite from the cape. An hour and half later, Vanguard passed over the USA again, in a 404 x 2466 mile orbit.
Out of 11 attemps, Vanguard orbited 3 satellites
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