(Orbital Transport und Raketen AktienGesellschaft)
A low-cost rocket produced by the OTRAG company of Stuttgart, Germany, and test-launched from 1977 to 1983. It used four rocket modules, the engines of which could be individually controlled. The cheap propellant was kerosene with an oxidizer of nitric acid. Windscreen-wiper motors operated the fuel valves. Supposedly intended to launch satellites, the OTRAG rocket aroused suspicions about its military use.
The company established a rocket range in Zaire (now Democratic Republic of Congo) in 1975 but this agreement was cancelled after objections from the USSR. A new rocket range was founded in Libya in 1979, but US and German protests ended tests there. OTRAG was discontinued in 1987.
Subjects: Astronomy and Astrophysics.