Mission: Intelsat VI Repair
Space Shuttle: Endeavour
Launch Pad: 39B
Launch Weight: 256,597 pounds
Launched: May 7, 1992, 7:40 p.m. EDT
Landing Site: Edwards Air Force Base, Calif.
Landing: May 16, 1992, 1:57:38 p.m. PDT
Landing Weight: 201,649 pounds
Rollout Distance: 9,490 feet
Rollout Time: 58 seconds
Mission Duration: 8 days, 21 hours, 17 minutes, 38 seconds
Returned to KSC: May 30, 1992
Orbit Altitude: 195 nautical miles
Orbit Inclination: 28.35 degrees
Miles Traveled: 3.7 million
Image above: STS-49 Crew photo with Commander Daniel C. Brandenstein, Pilot Kevin P. Chilton, Mission Specialists Pierre J. Thuot, Kathryn C. Thornton, Richard J. Hieb, Thomas D. Akers and Bruce E. Melnick. Image Credit: NASA
The first flight of orbiter Endeavour. The launch was originally scheduled for May 4 at 8:34 p.m. EDT, but was moved to May 7 for an earlier launch window opening at 7:06 p.m. EDT which provided better lighting conditions for photographic documentation of vehicle behavior during the launch phase. Launch was delayed 34 minutes due to TAL site weather conditions.
The INTELSAT VI (F-3) satellite, stranded in an unusable orbit since its launch aboard a Titan vehicle in March 1990, was captured by crewmembers during an EVA (extravehicular activity) and equipped with a new perigee kick motor. The satellite was subsequently released into orbit and the new motor fired to put the spacecraft into a geosynchronous orbit for operational use.
The capture required three EVAs: a planned one by astronaut Pierre J. Thuot and Richard J. Hieb who were unable to attach a capture bar to the satellite from a position on the RMS; a second unscheduled but identical attempt the following day; and finally an unscheduled but successful hand capture by Pierre J. Thuot and fellow crewmen Richard J. Hieb and Thomas D. Akers as Commander Daniel C. Brandenstein delicately maneuvered the orbiter to within a few feet of the 4.5 ton communications satellite. An ASEM structure was erected in the cargo bay by the crew to serve as a platform to aid in the hand capture and subsequent attachment of the capture bar.
A planned EVA also was performed by astronauts Kathryn C. Thornton and Thomas D. Akers as part of the Assembly of Station by EVA Methods (ASEM) experiment to demonstrate and verify maintenance and assembly capabilities for Space Station Freedom. The ASEM space walk, originally scheduled for two successive days, was cut to one day because of the lengthy INTELSAT retrieval operation.
Other "payloads of opportunity" experiments conducted included: Commercial Protein Crystal Growth (CPCG), Ultraviolet Plume Imager (UVPI) and the Air Force Maui Optical Station (AMOS) investigation. The mission was extended two days to complete all of the objectives.
The following records were set during the STS-49 mission:
- First EVA involving three astronauts.
- First and second longest EVA to date: 8 hours and 29 minutes and 7 hours and 45 minutes.
- First shuttle mission to feature four EVAs.
- EVA time for a single shuttle mission: 25 hours and 27 minutes, or 59:23 person hours.
- First shuttle mission requiring three rendezvous with an orbiting spacecraft.
- First attachment of a live rocket motor to an orbiting satellite.
- First use of a-drag chute during a shuttle landing.
The STS-49 crew members pose near Endeavour after landing. Pictured left to right are: Richard J. Hieb, mission specialist; Kevin P. Chiltin, pilot; Daniel C. Brandenstein, commander; and mission specialists Thomas D. Akers, Pierre J. Thuot, Kathryn C. Thornton, and Bruce E. Melnick.
STS049-91-026 (13 May 1992) --- Three astronauts hold onto the 4.5-ton Intelsat VI satellite after a six-handed "capture" was made minutes earlier. Left to right are astronauts Richard J. Hieb, Thomas D. Akers and Pierre J. Thuot. Thuot stands on the end of the remote manipulator system arm, from which he had made two earlier unsuccessful grapple attempts on two-person extravehicular activity sessions. Ground controllers and crew members agreed that a third attempt, using three mission specialists in the cargo bay of the space shuttle Endeavour, was the effort needed to accomplish the capture feat.
STS049-16-014 (13 May 1992) --- The successful capture of the Intelsat VI satellite is recorded in this horizontal 35mm frame. Left to right, astronauts Richard J. Hieb, Thomas D. Akers and Pierre J. Thuot have handholds on the satellite. This is one of the images on NASA's first release of still photographs from the STS-49 mission. The nine-day mission accomplished the capture of the Intelsat VI, subsequent mating of the satellite to a booster and its eventual deployment, as well as a space station preview extravehicular activity (EVA) called Assembly of Station by EVA Methods (ASEM). The space shuttle Endeavour's crew members were astronauts Daniel C. Brandenstein, mission commander; Kevin P. Chilton, pilot; and Thomas D. Akers, Richard J. Hieb, Bruce E. Melnick, Kathryn C. Thornton and Pierre J. Thuot, all mission specialists.
STS049-214-028 (11 May 1992) --- With his feet anchored in a portable foot restraint on the remote manipulator system end effector, astronaut Pierre J. Thuot is pictured during one of four sessions of extravehicular activity. The STS-49 mission specialist awaits with a special grapple bar as the space shuttle Endeavour heads for a rendezvous with the Intelsat VI communications satellite (out of frame). After this second attempt failed to garner the 4.5 ton satellite, three crew members two days later teamed to successfully grab it and prepare it for release into space. A 35mm camera was used to expose the image.
Frams von STS-49 Endeavour Mission NASA-Video: