Tag Archives: EVA

7 February 1984

Bruce McCandless outside Challenger in an MMU. (NASA)
Bruce McCandless outside Challenger in a MMU. (NASA)

7 February 1984: During mission STS-41-B, NASA astronauts Captain Bruce McCandless II, United States Navy, and Colonel Robert L. Stewart, United States Air Force, left the Space Shuttle Challenger (OV-099) on the first untethered space walk.

McCandless tested each of the Manned Maneuverung Units (MMU) while Stewart tested a work station. For 5 hours, 55 minutes, they used the nitrogen-fueled Manned Maneuvering Units (MMU) to move about the outside of the space ship. At the farthest, McCandless was 320 feet (98 meters) away from Challenger.

Manned Maneuvering Unit #3 in the collection of the National Air and Space Museum.

The Manned Maneuvering Unit was designed and built by Martin Marietta Corporation (now, Lockheed Martin). It is constructed primarily of aluminum. The MMU is powered by two batteries with 852 watts at full charge, and propelled by 24 gaseous nitrogen thrusters, providing 1.4 pounds of thrust (6.2 newtons), each. The astronaut controls the MMU with two hand controllers. It has six-axis motion and automatic attitude hold. Including a full supply of nitrogen, the MMU weighs approximately 338 pounds (153.3 kilograms). It is designed for a maximum of 6 hours of operation. The unit is 50.0 inches (127.0 centimeters) high, 33.3 inches (84.6 centimeters) wide and with control arms extended, has a maximum depth of 48.0 inches (121.9 centimeters).

Captain Bruce McCandless II, United States Navy, NASA Astronaut. (NASA)

Bruce McCandless II was born 8 June 1937 at Boston, Massachusetts. He was the son of Rear Admiral Bruce McCandless, United States Navy, who was awarded the Medal of Honor for his actions aboard USS San Francisco (CA-38) at the Naval Battle of Guadalcanal, 12–13 November 1942, and grandson of Commodore Byron McCandless. His mother was Sue Worthington Bradley McCandless.

Midshipman Bruce McCandless II, USNA (The 1958 Lucky Bag)

McCandless graduated from Woodrow Wilson High School, Long Beach, California, in 1954.  As the son of a Medal of Honor awardee, he was qualified for an automatic appointment as a midshipman at the United States Naval Academy, Annapolis, Maryland. He entered the Academy as a member of the Class of 1958. He stood first in his class in his Plebe year. He studied electronics, and photography, and was a member of the Academy’s sailing team. Aboard Royano, he competed in the annual Newport to Bermuda race.

Midshipman McCandless graduated second in his class at the United States Naval Academy, 4 June 1958 and was commissioned as an Ensign, United States Navy. He trained as a Naval Aviator at Pensacola, Florida. McCandless was promoted to the rank of lieutenant (junior grade) 4 December 1959

Lieutenant (j.g.) McCandless married Miss Bernice Doyle, 6 August 1960, at the U.S. Naval Academy Chapel. They would have two children, Bruce McCandless III and Tracy McCandless. She died in 2014. They had been married for 53 years.

Douglas F4D-1 Skyray, Bu. No. 134959, of VF-102 “Diamondbacks” aboard USS Forrestal (CV-59), circa July 1961. (U.S. Navy)

Lieutenant (j.g.) McCandless flew the Douglas F4D-1 Skyray (F-6A after 1962) and the McDonnell F-4B Phantom II with Fighter Squadron 102 (VF-102, “Diamondbacks”), serving aboard the supercarrier USS Forrestal (CV-59), and then the nuclear-powered aircraft carrier USS Enterprise (CVN-65). On 1 June 1962 McCandless was promoted to lieutenant.

McDonnell F-4B-7-MC Phantom II, Bu. No. 148389, of VF-102, “Diamondbacks,” aboard USS Enterprise (CVN-65), circa 1962–1964. (U.S. Navy)

Lieutenant Bruce McCandless II was accepted into the NASA’s Astronaut Group 5 astronaut, 4 April 1966, and assigned to the Apollo Program. He was promoted to lieutenant commander, 1 November 1966 He served a Mission Control communicator to Apollo 11 during the first Moon Walk, 21 July 1969.

Bruce McCandless II, second from left, in the Mission Operations Control Room, Mission Control Center, Johnson Space Center, Houston, Texas, during the Skylab 4 mission, 23 November 1973. McCandless is showing Flight Director Neil B. Hutchison “a mockup of the occulting disc for the T025 Coronagraph Contamination Measurement Engineering and Technology Experiment to be used by the crewmen of the third manned Skylab mission (Skylab 4)” (NASA)

McCandless was promoted to commander, 1 November 1972. On 1 October 1979, he advanced to the rank of Captain, United States Navy.

Captain McCandless did not fly until the space shuttle became operational. He served as a Mission Specialist aboard Challenger (STS-41-B) in 1984, and Discovery (STS-31) in 1990.

Launch of Discovery Mission STS-31, 12:53 UTC, 24 April 1990. (NASA)

Captain McCandless logged more than 5,200 hours of flight; 312 hours, 31 minutes, 1 second in space; and completed 208 orbits of the Earth.

Captain Bruce McCandless II, United States Navy (Retired), NASA Astronaut, died 21 December 2017 at the age of 80 years. He is buried at the United States Naval Academy Cemetery, Annapolis, Maryland.

Bruce McCandless at a distance of approximately 320 feet (98 meters) from the space shuttle Challenger, 7 February 1984. (NASA)
Captain Bruce McCandless II, U.S. Navy, at a distance of approximately 320 feet (98 meters) from the space shuttle Challenger, 7 February 1984. (NASA)

© 2019, Bryan R. Swopes

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13 December 1972

Eugene A. Cernan at the Taurus-Littrow Valley during the third EVA of the Apollo 17 mission. (Harrison H. Schmitt/NASA)
Eugene A. Cernan at the Taurus-Littrow Valley during the third EVA of the Apollo 17 mission. (Harrison H. Schmitt/NASA)

13 December 1972: At approximately 22:26 UTC, NASA Astronauts Eugene A. Cernan and Harrison H. Schmitt began the last of three moon walks, or EVAs, on the surface of the Moon at the Taurus-Littrow Valley.

“Bob, [Robert A.P. Parker, Astronaut, Houston Mission Control Cap Com]  this is Gene, and I’m on the surface; and, as I take man’s last step from the surface, back home for some time to come — but we believe not too long into the future — I’d like to just [say] what I believe history will record. That America’s challenge of today has forged man’s destiny of tomorrow. And, as we leave the Moon at Taurus-Littrow, we leave as we came and, God willing, as we shall return: with peace and hope for all mankind. Godspeed the crew of Apollo 17.”

— Astronaut Eugene Andrew Cernan, Captain, USN, at the Taurus Littrow Valley, The Moon, at Mission Time 170:40:00

Eugene A. Cernan, Mission Commander, inside the Lunar Module Challenger after the third EVA, 13 December 1972. (Harrison H. Schmitt/NASA)
Eugene A. Cernan, Mission Commander, inside the Lunar Module Challenger after the third EVA, 13 December 1972. (Harrison H. Schmitt/NASA)

This was the final EVA of the Apollo Program, lasting approximately 7 hours, 15 minutes. Then Harrison H. Schmitt and Gene Cernan climbed up into the Lunar Module Challenger to prepare to lift off the following day.

Gene Cernan was the last man to stand on the surface of the Moon.

Harrison H. Schmitt, Lunar Module Pilot, inside the LM after the final EVA of teh Apollo Program, 13 December 1972. (Eugene A. Cernan/NASA)
Harrison H. Schmitt, Lunar Module Pilot, inside the LM after the final EVA of the Apollo Program, 13 December 1972. (Eugene A. Cernan/NASA)

© 2016, Bryan R. Swopes

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25 July 1984

Major Svetlana Yevgenyevna Savitskaya, Hero of the Soviet Union

25 July 1984: Cosmonaut Svetlana Yevgenyevna Savitskaya, on her second mission to the Salyut 7 space station, became the first woman to perform a space walk, when she spent 3 hours, 35 minutes outside the space station.

Major Savitskaya was the second woman to fly in space, after Cosmonaut Valentina Vladimirovna Tereshkova. Her first space flight was also to Salyut 7, in 1982. She was assigned as commander of an all-woman crew to the station, but that flight was cancelled. She has spent 19 days, 7 hours, 6 minutes in space.

Major Savitskaya is a retired flight engineer and test pilot who holds 18 world records in MiG aircraft. She was twice awarded Hero of the Soviet Union.

Married with one child, she retired in 1993. Major Savitskaya currently serves in the State Duma, the lower house of the Russian parliament.

Cosmonaut Svetlana Yevgenyevna Savitskaya working outside the Salyut 7 space station during her 3 hour, 35 minute space walk, 25 July 1984. (RIA Novosti / Alamy)
Cosmonaut Svetlana Yevgenyevna Savitskaya working outside the Salyut 7 space station during her 3 hour, 35 minute space walk, 25 July 1984. (RIA Novosti / Alamy)

© 2015, Bryan R. Swopes

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3 June 1966

Thomas P. Stafford and Eugene A. Cernan. (NASA)
Thomas P. Stafford and Eugene A. Cernan. (NASA)

3 June 1966: NASA Astronauts Thomas P. Stafford and Eugene A. Cernan launched from Launch Complex 19, Kennedy Space Center, Cape Canaveral, Florida, at 13:39:33 UTC, aboard Gemini IX-A. The Gemini was a two-man space capsule built by McDonnell Aircraft Corporation of St. Louis. The launch vehicle was a Titan II GLV rocket. Stafford and Cernan were the original Gemini IX back up crew, but the primary crew, Charles Bassett and Elliott See, were killed in an aircraft accident three months earlier.

The three-day mission was to rendezvous and dock with an Agena Target Docking Adapter in low Earth orbit, and for Gene Cernan to perform several space walks and to test a back pack maneuvering unit.

Gemini IX-A successfully rendezvoused with the ATDA at 17:45 UTC, 3 June. However, the protective shroud had not separated from the Agena and docking with it was not possible.

Gemini IX-A launch from LC-19, 13:39:30 UTC, 3 June 1966. (NASA)

© 2015, Bryan R. Swopes

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