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Barbara Schwartz June 30, 1993

RELEASE 93-050

STS-51 PREFLIGHT BRIEFINGS SET FOR JULY 6

A series of background briefings for Space Shuttle mission STS-51 will be held

July 6, 1993 at the Johnson Space Center, Houston, beginning at 9:00 a.m. CDT.

STS-51 will be the 17th flight of the Space Shuttle Discovery. The mission will feature the deployment of the Advanced Communications Technology Satellite (ACTS), as well as the deployment and retrieval of the Orbiting and Retrievable Far and Extreme Ultraviolet Spectrometer (ORFEUS) which will be mounted on the Shuttle Pallet Satellite (SPAS).

Following its deployment from the Shuttle, the ACTS-will be placed in a geostationary orbit by a Transfer Orbit Stage (TOS) where it will be used as a space-based testbed for new satellite communications technology. During its week-long free-flight, the ORFEUS/SPAS will gather information on how stars are formed and will study properties of the interstellar medium.

A briefing agenda is attached. All briefings will be carried on NASA Select television with two-way audio for questions from participating NASA locations. NASA Select is carried on GE SATCOM F2R, transponder 13, 72 degrees

west longitude.









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STS-51 PREFLIGHT BRIEFING SCHEDULE

NASA Johnson Space Center, Houston, Bldg. 2, Room 135 Tuesday, July 6, 1993

TIME EDT BRIEFING/BRIEFER(S)

10 a.m. MISSION OVERVIEW

Robert E. Castle, Jr., Lead Flight Director

11 a.m. ADVANCED COMMUNICATIONS TECHNOLOGY SATELLITE

(ACTS)

ACTS-1 MISSION OVERVIEW AND OPERATIONS

Dr. Richard Gedney, Project Manager, Lewis Research Center, Cleveland

ACTS SCIENCE

Mike Smith, Experiments Program Manager, NASA Hqs.

TRANSFER ORBIT STAGE OPERATIONS

Al Hughes, Manager for Upper Stage Projects,

Marshall Space Flight Center, Huntsville, Ala.

1:30 p.m. ORBITING AND RETRIEVABLE FAR AND EXTREME

ULTRAVIOLET SPECTROMETER-SHUTTLE PALLET SATELLITE (ORFEUS-SPAS)

GERMAN SPACE AGENCY'S (DARA) ROLE

Dr. G. Hartmann, Head, Space Science Div., German Space Agency

ORFEUS-SPAS OPERATIONS

Dr. Konrad Moritz, Mission Manager, Deutsche Aerospace

NASA'S ROLE

Dr. Robert Stachnik, ORFEUS Program Scientist, NASA Hqs.

MISSION SCIENCE

Prof. Michael Grewing, Principal Investigator University of Tbingen

3:00 p.m. STS-51 CREW

Frank Culbertson, Commander

William Readdy, Pilot

Daniel Bursch, Mission Specialist

James Newman, Mission Specialist

Carl Walz, Mission Specialist

 

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