STS-41-B was NASA's tenth Space Shuttle mission and the fourth flight of the Space Shuttle Challenger. It launched on February 3, 1984 and landed on February 11, 1984, after deploying two communications satellites .

2024年12月19日 · Astronaut Bruce McCandless II, STS-41-B mission specialist, uses his hands to control his movement above the Earth — just a few meters away from the space shuttle Challenger — during the first-ever spacewalk which didn’t use restrictive tethers and umbilicals.

(41-B) scheduled for launch Feb. 3 from Kennedy Space Center, Fla. Gas-powered backpacks will be used to demonstrate spacewalk techniques important for the successful retrieval and repair of the disabled Solar Maximum spacecraft. The primary goal on the eight day mission will be to deploy into orbit two commercial communications

2024年2月6日 · On Feb. 3, 1984, space shuttle Challenger took off on its fourth flight, STS-41B. Its five-person crew of Commander Vance D. Brand, Pilot Robert L. “Hoot” Gibson, and Mission Specialists Ronald E. McNair, Robert L. Stewart, and Bruce McCandless flew an eight-day mission ending with the first return to NASA’s Kennedy Space Center (KSC) in Florida.

Landing occurred during the 128th orbit. This was the first Space Shuttle landing at the Kennedy Space Center. The mission featured the first untethered spacewalks, which were performed by astronauts McCandless and Stewart using Manned Maneuvering Units (MMU).

2015年5月1日 · STS 41-B was the fourth Challenger shuttle flight with Vance Brand, Robert Gibson, Bruce McCandless, Ronald McNair, and Robert Stewart on board. Misson Highlights consisted of the first untethered space walks by McCandless and Stewart, using manned maneuvering unit.

sts-41-b （原来编号sts-11）是历史上第十次航天飞机任务，也是挑战者号航天飞机的第四次太空飞行。 此次任务中， 布鲁斯·麦克坎德雷斯 和 罗伯特·斯图尔特 完成人类首次不系绳的 舱外活动 。

罗伯特·斯图尔特 （Robert L. Stewart，曾执行STS-41-B以及 STS-51-J 任务），任务专家 （后排左起：斯图尔特、麦克内尔、麦克坎德雷斯，前排左起：布兰德、吉布森）

2023年8月28日 · Space Shuttle Flight 10 (STS-41B) Post Flight Presentation, narrated by the astronauts (24 minutes). Launch: February 3, 1984. Crew: Vance Brand, Robert

…the Challenger space shuttle (STS-41-B; February 3–11, 1984). Although this trip was plagued by several malfunctions and two communications satellites were misdirected, Bruce McCandless’s performance of the first space walk without a lifeline and the successful return of the shuttle to its home base were regarded as major accomplishments.…