a three-stage launch vehicle developed for the Navy in 1957. It
had liquid-propellant engines in the first two stages and a solid-propellant
third stage. Vanguard's technical ancestors were the Navy's Viking
and Aerobee sounding rockets.
of the internal hardware was removed when this Vanguard was prepared
for display. It was transferred to the Smithsonian in 1958 after
being exhibited at Andrews Air Force Base in Maryland.
from the U.S. Naval Research Laboratory
||21.6 m (70 ft 9 in)
||10,000 kg (22,600 lb)
||120,000 newtons (27,000
||(1st stage) kerosene
and liquid oxygen; (2nd stage) hydrazine and nitric acid; (3rd stage)
||Glen L. Martin Co. (prime);
General Electric, Aerojet General, Thiokol (engines)