Grumman Aircraft Engineering Corporation, later Grumman Aerospace Corporation, was a leading 20th century U.S. producer of military and civilian aircraft. Founded on December 6, 1929, by Leroy Grumman with Jake Swirbul and William Schwendler, its independent existence ended in 1994 when it was acquired by Northrop Corporation to form Northrop Grumman.
Grumman was the chief contractor on the Apollo Lunar Module that landed men on the moon. They received the contract on November 7, 1962, and built 13 lunar modules. As the Apollo program neared its end, Grumman was one of the main competitors for the contract to design and build the Space Shuttle, but lost to Rockwell International.