
S93-29830 (4 Nov 1992) --- Inside the Spacelab D-2 module in the Operations and Checkout Building high bay, STS-55 Mission Commander Steven R. Nagel (left) and Pilot Terence T. Henricks are participating in a mission sequence test to check out experiment steps and procedures which will be conducted on-orbit. Spacelab D-2, the second German Spacelab, is scheduled to fly on space shuttle mission STS-55 in 1993.

STS-55 crewmembers pose with United States and German flags inside the Spacelab Deutsche 2 (SL-D2) science module located in the payload bay (PLB) of Columbia, Orbiter Vehicle (OV) 102. Wearing communications kit assembly headsets (HDSTs) are (left to right) Mission Specialist 1 (MS1) and Payload Commander (PLC) Jerry L. Ross, MS3 Bernard A. Harris, Jr, German Payload Specialist 1 Ulrich Walter, and Payload Specialist 2 Hans Schlegel.

STS055-45-017 (26 April-6 May 1993) --- Hans Schlegel (foreground) participates in the ongoing investigation of human physiology under microgravity conditions as he works out on the ergometer at the Anthrorack. Monitoring the "run" is astronaut Bernard A. Harris, Jr., STS-55 mission specialist. Schlegel is one of two payload specialists representing the German Aerospace Research Establishment (DLR) on the Spacelab D-2 mission.

STS055-22-004 (26 April-6 May 1993) --- Four of the seven crew members who spent 10 days aboard the Space Shuttle Columbia are pictured during a brief shift overlap period in the Spacelab D-2 Science Module. Left to right are Jerry L. Ross, Ulrich Walter, Bernard A. Harris, Jr. and Hans Schlegel. Ross, STS-55 payload commander, is changing a sample in a materials processing furnace; Walter, a German payload specialist is in the midst of a baroreflex test and fellow payload specialist Schlegel assists mission specialist and physician Harris with a physiological test at the "Anthrorack".

S92-49373 (8 Dec 1992) --- The seven prime flight crewmembers and two alternates assigned to support the STS-55\Spacelab D-2 mission pose with their science module. Left to right (front) are Steven R. Nagel, Terence T. (Tom) Henricks, Charles J. Precourt, Bernard A. Harris Jr., Ulrich Walter, Gerhard Thiele and Hans Schlegel; and (back) Renate Brummer and Jerry L. Ross. Nagel is mission commander; Henricks, pilot; and Ross, payload commander. Harris and Precourt will serve as mission specialists. Walter and Schlegel are scheduled to represent the DLR as payload specialists for the mission, while Brummer and Thiele will serve as alternates and fill supportive roles on the ground. The crew was photographed during a tour of the science module before its integration at Kennedy Space Center (KSC).

STS055-219-024 (26 April-6 May 1993) --- Ulrich Walter, STS-55 payload specialist representing the German Aerospace Research Establishment (DLR), demonstrates the microgravity aboard the Spacelab D-2 science module in Columbia's cargo bay. The module served as his space laboratory and that of his six crewmates for l0 days.

S92-48735 (18 Sept 1992) --- These four Germans have been assigned as payload specialists to support the STS-55\Spacelab D-2 mission. Left to right are Renate Brummer, Gerhard Thiele, Ulrich Walter and Hans Schlegel. Walter and Schlegel are scheduled to fly aboard the Space Shuttle Columbia for the mission, while Brummer and Thiele will serve as alternates and fill supportive roles on the ground. They are seen during a break in training in the Shuttle mockup and integration laboratory at the Johnson Space Center.

STS055-203-009 (26 April-6 May 1993) --- The seven crew members who spent 10 days aboard the space shuttle Columbia pose for the traditional in-flight portrait in the Spacelab D-2 Science Module. Front, left to right, are Terence T. (Tom) Henricks, Steven R. Nagel, Ulrich Walter and Charles J. Precourt. In the rear are (left to right) Bernard A. Harris Jr., Hans Schlegel and Jerry L. Ross. Nagel served as mission commander; Henricks was the pilot and Ross, the payload commander. Harris and Precourt were mission specialists and Schlegel and Walter were payload specialists representing the German Aerospace Research Establishment (DLR). Photo credit: NASA

STS055-S-052 (26 April 1993) --- A wide shot shows the STS-55 launch at the Kennedy Space Center. Carrying an international crew of seven and a science laboratory, the Space Shuttle Columbia was on its way for a nine-day Earth-orbital mission in support of the Spacelab D-2 mission. Onboard were astronauts Steven R. Nagel, mission commander; Terence T. (Tom) Henricks, pilot; Jerry L. Ross, payload commander; Charles J. Precourt and Bernard A. Harris Jr., mission specialists; along with German payload specialists Hans Schlegel and Ulrich Walter. Liftoff occurred at 10:50 a.m. (EDT), April 26, 1993.

The seven astronauts included in the STS-55 crew portrait are: (front left to right) Terence (Tom) Henricks, pilot; Steven R. Negal, commander; and Charles J. Precourt, mission specialist. On the back row, from left to right, are Bernard A. Harris, mission specialist; Hans Schlegel, payload specialist; Jerry L. Ross, mission specialist; and Ulrich Walter, payload specialist. The crew launched aboard the Space Shuttle Columbia on April 26, 1993 at 10:50:00 am (EDT). The major payload was the German Dedicated Spacelab, D2.

STS055-233-019 (26 April-6 May 1993) --- Terence T. (Tom) Henricks, STS-55 pilot, wears a special collar for a space adaptation experiment in the science module onboard the Earth-orbiting Space Shuttle Columbia. The Baroreflex (BA) experiment is designed to investigate the theory that light-headedness and a reduction in blood pressures upon standing after landing may arise because the normal reflex system regulating blood pressure behaves differently after having adapted to a microgravity environment. These space-based measurements of the baroreflex will be compared to ground measurements to determine if microgravity affects the reflex.

STS055-106-090 (26 April- 6 May 1993) --- Hans Schlegel, one of two STS-55 payload specialists representing the German Aerospace Research Establishment (DLR) onboard the Space Shuttle Columbia, finds plenty of room to "spread out" while participating in a Tissue experiment. Astronaut Bernard A. Harris, Jr., mission specialist, monitors an experiment in the background.

STS055-203-034 (26 April-6 May 1993) --- Astronaut Steven R. Nagel, STS-55 mission commander, has found an isolated station in the D-2 science module from which to talk to students on Earth. Like many before it, the seven member crew participated in communications with students and licensed radio operators via the Shuttle Amateur Radio Experiment (SAREX). Photo credit: NASA