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NASA Selects Applied Physics Laboratory for TIMED Mission

Donald Savage
Headquarters, Washington, DC               December 16, 1997
(Phone:  202/358-1727)

Susan Hendrix
Goddard Space Flight Center, Greenbelt, MD
(Phone: 301/286-7745)

RELEASE:  C97-u

NASA SELECTS APPLIED PHYSICS LABORATORY FOR TIMED MISSION

       NASA has awarded a cost plus fixed-fee contract estimated 
at $92 million to the Johns Hopkins University/Applied Physics 
Laboratory.  The contract is for the design and development of the 
Thermosphere Ionosphere Mesosphere Energetics and Dynamics (TIMED) 
Mission.  

       The mission is part of NASA's effort to provide more 
frequent access to space at lower costs.  Instruments aboard the 
observatory will employ advances in remote sensing technology to 
allow scientists to explore the Earth's mesosphere and lower 
thermosphere from a global perspective.

       The Johns Hopkins University/Applied Physics Laboratory 
will be responsible for the design, development, fabrication, 
assembly, integration and testing of the observatory.  TIMED 
consists of a spacecraft and four flight instruments:  Solar 
Extreme Ultraviolet Experiment (provided by the University of 
Colorado); TIMED Doppler Interferometer (provided by University of 
Michigan); Global Ultraviolet Imager (provided by Aerospace Corp., 
Los Angeles, CA) and Sounding of the Atmosphere Using Broadband 
Emission Radiometry Instrument (provided by NASAÕs Langley 
Research Center, Hampton, VA).  Johns Hopkins also will manage the 
development, integration and operation of these four instruments.  
A majority of the work will be performed at the laboratoryÕs 
facilities in Laurel, MD.

       TIMED is scheduled to launch from the Western Test Range at 
Vandenberg Air Force Base, CA, aboard a Delta II expendable launch 
vehicle in May 2000. 

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