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| Bruce McCandless II | |
|---|---|
| Name | Bruce McCandless II |
| Birth date | January 8, 1937 |
| Birth place | Boston, Massachusetts, U.S. |
| Death date | December 21, 2017 |
| Death place | Denver, Colorado, U.S. |
| Nationality | American |
| Occupation | Naval officer, aviator, test pilot, NASA astronaut |
| Rank | Captain (United States Navy) |
| Alma mater | United States Naval Academy, Naval Postgraduate School |
| Missions | STS-41-B, STS-31 |
| Awards | Congressional Space Medal of Honor, NASA Distinguished Service Medal, NASA Exceptional Service Medal, Legion of Merit |
Bruce McCandless II was an American naval officer, naval aviator, test pilot, and NASA astronaut best known for performing the first untethered free flight in space using the Manned Maneuvering Unit (MMU). He flew on two Space Shuttle missions and contributed to spacecraft operations, extravehicular activity techniques, and satellite deployment efforts during the late Cold War era of United States spaceflight.
McCandless was born in Boston, Massachusetts and raised in a family with naval ties; his father, Bruce McCandless I, was a Navy Cross recipient and Battle of Guadalcanal veteran. He attended the United States Naval Academy at Annapolis, Maryland, where he earned a Bachelor of Science and was commissioned into the United States Navy. He later completed graduate studies at the Naval Postgraduate School and undertook advanced flight training at Naval Air Station Pensacola and Naval Air Station Miramar in line with naval aviation career paths followed by contemporaries such as John Young and Tom Stafford.
Following designation as a naval aviator, McCandless served in Fighter Squadron 143 and other fleet squadrons flying carrier-based aircraft such as the F-4 Phantom II and earlier types associated with United States Atlantic Fleet and United States Pacific Fleet operations. Selected for test pilot training, he attended the United States Naval Test Pilot School at Naval Air Station Patuxent River and served as a test pilot on programs involving avionics, flight control, and carrier suitability assessments similar to programs overseen by Naval Air Systems Command and personnel like James Webb and Wesley Brown (test pilot). His test experience included work with flight test organizations supporting Naval Air Test Center projects that interfaced with defense contractors and aircraft manufacturers active during the Vietnam War era.
McCandless was selected as a member of NASA Astronaut Group 7 and served in programmatic and flight roles across the Space Shuttle program, supporting mission planning, extravehicular activity (EVA) procedures, and payload deployment operations parallel to crews including Robert L. Gibson, Ronald McNair, Kathryn Sullivan, and Story Musgrave. He flew as a mission specialist on STS-41-B aboard Space Shuttle Challenger in 1984, a mission that included deployment of communications satellites and EVA tests, and later served on STS-31 aboard Space Shuttle Discovery in 1990, which deployed the Hubble Space Telescope, a multinational observatory involving organizations such as European Space Agency partners and contractors like Lockheed Corporation and Perkin-Elmer.
McCandless is widely recognized for performing the first untethered free flight during an EVA using the Manned Maneuvering Unit (MMU), a nitrogen-propelled backpack propulsion system developed by NASA Johnson Space Center contractors and integrated into Shuttle-era EVA operations. The MMU program drew on engineering inputs from teams associated with Rockwell International, Boeing, and NASA flight hardware offices, and its demonstration required coordination with mission control centers including Johnson Space Center Mission Control and flight dynamics specialists who worked on guidance, navigation, and control systems similar to those used on Aerospace Corporation projects. The untethered EVA validated concepts for satellite servicing, retrieval, and crew mobility that influenced later approaches to on-orbit operations and informed subsequent robotic and human-tended servicing proposals involving Intelsat, Palapa, and other satellite operators.
After active flight assignments, McCandless served in technical and advisory roles at NASA and in aerospace industry and veteran communities, engaging with programs and institutions such as Jet Propulsion Laboratory, National Air and Space Museum, and professional associations like the Society of Experimental Test Pilots. His awards include the Congressional Space Medal of Honor, NASA Distinguished Service Medal, and multiple military decorations such as the Legion of Merit and Navy Distinguished Service Medal-era recognitions customary for senior United States Navy officers. His photograph from the untethered EVA became an iconic image reproduced by publications, museums, and cultural institutions alongside depictions of other astronauts like Alan Shepard and Neil Armstrong, and his work influenced later programs including Hubble Space Telescope servicing missions and discussions around on-orbit servicing architectures used by agencies and companies such as Northrop Grumman.
McCandless married and raised a family while maintaining ties to naval and astronaut communities in California and later Colorado. He participated in public outreach, reunions, and speaking engagements alongside figures from Apollo program and Shuttle-era cohorts, contributing firsthand perspective to histories involving Soviet Union–era space competition and cooperative initiatives such as Shuttle–Mir Program. He died in Denver, Colorado on December 21, 2017, and is remembered through collections, oral histories, and exhibits maintained by institutions including the Smithsonian Institution and NASA archives.
Category:1937 births Category:2017 deaths Category:American astronauts Category:United States Naval Academy alumni Category:United States Navy officers