Names | Space Transportation System-55 Spacelab D-2 |
---|---|
Mission type | Microgravity research |
Operator | NASA and DLR |
COSPAR ID | 1993-027A |
SATCAT no. | 22640 |
Mission duration | 9 days, 23 hours, 39 minutes, 59 seconds |
Distance travelled | 6,701,603 km (4,164,183 mi) |
Orbits completed | 160 |
Spacecraft properties | |
Spacecraft | Space Shuttle Columbia |
Landing mass | 103,191 kg (227,497 lb) |
Payload mass | 11,539 kg (25,439 lb) |
Crew | |
Crew size | 7 |
Members | |
Start of mission | |
Launch date | April 26, 1993, 14:50:00 UTC (10:50 am EDT) |
Launch site | Kennedy, LC-39A |
Contractor | Rockwell International |
End of mission | |
Landing date | May 6, 1993, 14:29:59 UTC (7:29:59 am PDT) |
Landing site | Edwards, Runway 22 |
Orbital parameters | |
Reference system | Geocentric orbit |
Regime | Low Earth orbit |
Perigee altitude | 304 km (189 mi) |
Apogee altitude | 312 km (194 mi) |
Inclination | 28.45° |
Period | 90.70 minutes |
STS-55 mission patch Standing: Harris, Schlegel, Ross, Walter Seated: Henricks, Nagel, Precourt |
STS-55, or Deutschland 2 (D-2), was the 55th overall flight of the NASA Space Shuttle and the 14th flight of Shuttle Columbia . This flight was a multinational Spacelab flight involving 88 experiments from eleven different nations. The experiments ranged from biology sciences to simple Earth observations.
Position | Astronaut | |
---|---|---|
Commander | Steven R. Nagel Fourth and last spaceflight | |
Pilot | Terence T. Henricks Second spaceflight | |
Mission Specialist 1 | Jerry L. Ross Fourth spaceflight | |
Mission Specialist 2 Flight Engineer | Charles J. Precourt First spaceflight | |
Mission Specialist 3 | Bernard A. Harris Jr. First spaceflight | |
Payload Specialist 1 | Ulrich Walter, DLR Only spaceflight | |
Payload Specialist 2 | Hans Schlegel, DLR First spaceflight | |
Member of Blue Team Member of Red Team |
Position | Astronaut | |
---|---|---|
Payload Specialist 1 | Gerhard Thiele, DLR | |
Payload Specialist 2 | Renate Brümmer, DLR |
Seat [1] | Launch | Landing | Seats 1–4 are on the flight deck. Seats 5–7 are on the mid-deck. |
---|---|---|---|
1 | Nagel | ||
2 | Henricks | ||
3 | Ross | Harris | |
4 | Precourt | ||
5 | Harris | Ross | |
6 | Walter | ||
7 | Schlegel |
Columbia was initially scheduled to launch in late February 1993. However, this date slipped to early March 1993 due to concerns with the tip-seal retainers in the main engines' oxidizer turbopumps. All three turbopumps were replaced at the pad but later inspection revealed the retainers to be in good condition. Further delays were caused by the burst of a hydraulic flex hose in the aft compartment during the Flight Readiness Test (FRT). The lines were removed and inspected and three replacements were installed.
Attempt | Planned | Result | Turnaround | Reason | Decision point | Weather go (%) | Notes |
---|---|---|---|---|---|---|---|
1 | 22 Mar 1993, 7:30:00 pm | Scrubbed | — | Technical | 22 Mar 1993, 7:29 pm (T-0:03) | Pad abort: oxidizer purge valve jammed on a chunk of O-ring, all 3 main engines changed. [2] | |
2 | 24 Apr 1993, 12:00:00 am | Scrubbed | 32 days 4 hours 30 minutes | Technical | Possible faulty reading with one of the inertial measurement units. [3] | ||
3 | 26 Apr 1993, 2:50:00 pm | Success | 2 days 14 hours 50 minutes | Launched |
Columbia carried to orbit the second reusable German Spacelab D-2 and demonstrated the shuttle's ability for international cooperation, exploration, and scientific research in space. The Spacelab module and an exterior experiment support structure contained in Columbia's payload bay comprised the Spacelab D-2 payload. The first German Spacelab flight, D-1, flew Shuttle mission STS-61-A in October 1985. The United States and Germany gained valuable experience for future space station operations.
The D-2 mission, as it was commonly called, augmented the German microgravity research program started by the D-1 mission. The German Aerospace Center (DLR) had been tasked by the German Space Agency (DARA – Deutsche Agentur für Raumfahrtangelegenheiten) to conduct the second mission. DLR, NASA, the European Space Agency (ESA), and agencies in France and Japan contributed to D-2's scientific program. Eleven nations participated in the experiments. Of the 88 experiments conducted on the D-2 mission, four were sponsored by NASA.
The crew worked in two shifts around-the-clock to complete investigations into the areas of fluid physics, materials sciences, life sciences, biological sciences, technology, Earth observations, atmospheric physics, and astronomy. Many of the experiments advanced the research of the D-1 mission by conducting similar tests, using upgraded processing hardware, or implementing methods that took full advantage of the technical advancements since 1985. The D-2 mission also contained several new experiments which were not previously flown on the D-1 mission.
The mission surpassed the 365th day in space for the Space Shuttle fleet and the 100th day of flight time in space for Columbia, the fleet's oldest Space Shuttle orbiter, on its fourteenth flight.
D-2 marked the first telerobotic capture of a free floating object by flight controllers in Germany. The crew conducted the first intravenous saline solution injection in space as part of an experiment to study the human body's response to direct fluid replacement as a countermeasure for amounts lost during space flight. They also successfully completed an in-flight maintenance procedure for collection of orbiter waste water, which allowed the mission to continue.
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