NW031 1/144 Atlas Agena A SAMOS
In 1955 Convair won the prime contract for Atlas ICBM.The
liquid oxygen and kerosene vehicle was designed to carry a
thermonuclear warhead over 7000 miles. The Atlas was unique in
its “stage and half” design in which two of its main engines
were shed to reduce weight after two minutes of flight, while the
central sustainer continued to burn. In order to minimize
sustainer tank weight (used also for booster engines), Convair
employeed balloon construction. Flights of Atlas began on June
11, 1957, with the launch of Atlas A powered by booster alone. In
November 1958, an Atlas B reached full design range, and the
operational Atlas D was deployed in 1960.
The Atlas-Agena began as a launcher for Air Force satellites. The restartable Agena was first developed as an upper stage and propulsion unit for spy satellites. Agena A was followed by Agenas B and D, which boosted a lot of US lunar and interplanetary probes.
SAMOS (Satellite and Missile Observation System) was a series of US Air Force spacecraft designed to conduct TV surveillance of the entire world from polar, nongeosynchronous orbit, transmitting pictures to earth during the part of its orbit that took it over US territory. The SAMOS spacecraft were also able to return fil capsules. SAMOS 1 was launched on October 11th, 1960.
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