Lounge was employed at the Lyndon B. Johnson Space Center beginning in July 1978. During this time, he worked as lead engineer for Space Shuttle-launched satellites, and also served as a member of the Skylab Reentry Flight Control Team. He completed these assignments while with the Payload Operations Division. Selected as an astronaut candidate by NASA in 1980, he completed a one-year training and evaluation period, and became an astronaut in August 1981. He served as a member of the launch support team at Kennedy Space Center for the STS-1, STS-2, and STS-3 missions. Following his first flight, he was assigned to the first mission to carry the Centaur upper stage. After the mission was canceled, he participated in Space Station design development. From 1989 through 1991, Lounge served as Chief of the Space Station Support Office, representing astronaut interests in Space Station design and operation planning.
Spaceflights
, launched from Kennedy Space Center, Florida, on August 27, 1985. During that mission Lounge's duties included deployment of the Australian AUSSAT communications satellite and operation of the Remote Manipulator System. The crew deployed two other communications satellites, the Navy's SYNCOM IV-4, and American Satellite Company's ASC-1, and also performed a successful on-orbit rendezvous and repair of the ailing 15,400 lb SYNCOM IV-3 satellite. STS-51-I completed 112 orbits of the Earth before landing at Edwards Air Force Base, California, on September 3, 1985. Mission duration was 171 hours, 17 minutes, 42 seconds. STS-26 Discovery, the first flight to be flown after the Challenger accident, launched from the Kennedy Space Center on September 29, 1988. During the four-day mission, the crewmen successfully deployed the Tracking and Data Relay Satellite, which was subsequently carried to orbit by the Inertial Upper Stage rocket. They also operated eleven mid-deck experiments. Discovery completed 64 orbits of the Earth before landing at Edwards Air Force Base, California, on October 3, 1988. Mission duration was 97 hours, 57 seconds. STS-35 Columbia, launched from the Kennedy Space Center on December 2, 1990. Lounge served as flight engineer on this 9-day flight that was dedicated to astronomy. Observations of the Universe were collected by the ASTRO-1 ultraviolet telescope and by the Broad Band X-Ray Telescope. Columbia completed 142 orbits of the Earth before landing at Edwards Air Force Base, California, on December 10, 1990. Mission duration was 215 hours, 5 minutes, 8 seconds.
Post-NASA career
Lounge resigned from NASA in June 1991 to join SPACEHAB. At the time, Lounge explained his resignation from the NASA Astronaut Corps by saying "This is a very tough job to leave, but I feel that three flights is my fair share, and I'm ready for a new challenge." In 2002, Lounge became Director of Space Shuttle and Space Station Program Development for Boeing. Two years later he became Director for Business Development for integrated defense systems and space exploration. Lounge joined Sure Secure Solutions, an 8 company, as Director Business Development in March 2010.
Death
Lounge died on March 1, 2011, of complications from liver cancer.
Awards and honors
Navy Air Medals
Navy Commendation Medals
Johnson Space Center Superior Achievement Award
NASA Exceptional Service Medals
NASA Space Flight Medals
Part of 18th Street in his hometown of Burlington, Colorado was renamed Mike Lounge Drive in his honor.