Space Shuttle Phase B begins: orbiter contracts are awarded to McDonnell Douglas and Martin Marietta; and North American Rockwell and General Dynamics; engine contracts are awarded to Pratt and Whitney, Rocketdyne, and Aerojet.
Space Shuttle Phase B begins: orbiter contracts are awarded to McDonnell Douglas and Martin Marietta; and North American Rockwell and General Dynamics; engine contracts are awarded to Pratt and Whitney, Rocketdyne, and Aerojet.