NASA/Goddard Space Flight Center, Code 214.5, Greenbelt, MD 20771

99 -- EXPENDABLE LAUNCH VEHICLE SERVICES DUE 091697 POC Marilyn Seppi, Contracting Officer, Phone (301)286-0422, Fax (301)286-0324, Email Marilyn.J.Seppi.1@gsfc.nasa.gov -- Celeste Dalton, Contracting Officer, Phone (301)286-0420, Fax (301)286-0324, Email Celeste.M.Dalton.1@gsfc.nasa.gov WEB: Click here for the latest information about this notice, http://procurement.nasa.gov/EPS/GSFC/date.html#2145-552-03. E-MAIL: Marilyn Seppi, Marilyn.J.Seppi.1@gsfc.nasa.gov. The National Aeronautics and Space Administration (NASA) is seeking expressions of interest from industry or Government organizations regarding their capability to provide launch services for the Scatterometer Replacement Mission. The recent failure of the ADEOS spacecraft with the NASA scatterometer instrument on board will result in an impact to earth science research capability unless a replacement spacecraft can be launched. Launch may occur as early as September 30, 1998, but no later than November 30, 1998. Required launch service support may involve either a shared or dedicated launch of a spacecraft. Spacecraft mass and dimensions fall within the following envelope (not including vehicle attach hardware): Mass: from 500 kg (1102 lb) to 830 kg (1830 lb) Length: from 2.40 m (94.5 in) to 4.50 m (177.2 in) Diameter: from 1.30 m (51.2 in) to 2.70 m (106.3 in) The preferred operational orbit is a circular, sun-synchronous orbit of 803 km (433.6 Nmi) altitude; however, near circular operational orbitsbetween 780 to 825 km (421.2 to 445.5 Nmi) altitude and greater than 85 degrees in inclination may be acceptable. Injection orbit for the launch vehicle does not need to satisfy the final operational orbit of the spacecraft. However, sufficient margins must remain for the spacecraft to reach the operational orbit. The minimum injection or parking orbit altitude with dispersions are: Perigee: 220 km (118.8 Nmi). Apogee: 783 km (422.8 Nmi). Parties possessing the capability to launch this mission are invited to submit a capabilities statement describing their approach, experience with launch systems, the proposed launch system, and the capability of that system to meet the above requirements relative to spacecraft mass, volume, orbit with injection errors, and launch schedule. This is a request for information only and should not be construed as a commitment by the Government to enter into a contract for the above described launch services. Responses may be submitted to Ted Grems by FAX to (301) 286-1696 or bye-mail to Edward.G.Grems.1@gsfc.nasa.gov or by mail to the above address, Code 470. Responses must be submitted by September 16, 1997. (0245)

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