OTRAG
The OTRAG rocket was a West German modular satellite-delivery rocket developed by the OTRAG company (German: Orbital Transport- und Raketen-Aktiengesellschaft, or Orbital Transport and Rockets, Inc.) in the 1970s and 80s. The OTRAG rocket was to become a rocket built up from several mass-produced units, intended to carry satellites with a weight of 1-10 tons or more into orbit.