NASA/Goddard Space Flight Center, Code 216, Greenbelt, MD 20771

66 -- DIFFUSE MICROWAVE EMISSION SURVEY (DIMES) COMPOSITE CORRUGATED FEEDHORN DEVELOPMENT SOL 685-65195 DUE 120899 POC Jeanne V. Moschetti, Contract Specialist, Phone (301) 286-3227, Fax (301) 286-1773, Email jmoschet@pop100.gsfc.nasa.gov WEB: Click here for the latest information about this notice, http://nais.msfc.nasa.gov/cgi-bin/EPS/bizops.cgi?gr=D&;pin=51#685-65195. E-MAIL: Jeanne V. Moschetti, jmoschet@pop100.gsfc.nasa.gov. NASA/GSFC plans to issue a Request for Quote (RFQ) for the hardware required, the engineering issues to be addressed, and the technology approach for the Diffuse Microwave Emmission Survey (DIMES) feedhorn development. DIMES requires a series of six corrugated conical feedhorns. The DIMES Mission will detect the cosmic microwave background radiation between 2 GHz and 100 GHz using cryogenic antennas operating around 3 K. It is anticipated that the award will be based on price and other factors. The specific goals of this effort are: 1.Design and manufacture a 10 GHz composite material feedhorn with a plated metalic coating. 2. Fabricate a transition adapter to mount to the feed horn. 3. Prove through testing and inspections that the metallic coating will adhere well to the composite and epoxy joints after 6 thermal cycles from room temperature to 3K. 4. Prove through analysis and/or testing that the corrugation rings will maintain their positional tolerances after thermal cycling and while at 3 K. 5. Identify scale-up issues for producing a range of composite feedhorns, from 10GHz to 2GHZ (approximately 5 times larger in all dimensions. This procurement is being conducted under the Simplified Acquisition Procedures (SAP). The DPAS Rating for this procurment is DO C9. The anticipated release date of RFQ is on or about 12/8/99 with an anticipated quote due date of on or about 12/15/99. All qualified responsible sources may submit a quote which shall be considered by the agency. An ombudsman has been appointed -- See Internet Note "B". The solicitation and any documents related to this procurement will be available over the Internet. These documents will be in Microsoft Office Suite (Word 6.0, Excel 5.0, or PowerPoint 4.0) format and will reside on a World Wide Web (WWW) server, which may be accessed using a WWW browser application. The Internet site, or URL, for the NASA/GSFC Business Opportunities home page is http://nais.msfc.nasa.gov/cgi-bin/EPS/bizops.cgi?gr=C&;pin=51 Prospective offerors shall notify this office of their intent to submit an offer. It is the offeror's responsibility to monitor the Internet site for the release of the solicitation and amendments (if any). Potential quoters will be responsible for downloading their own copy of the solicitation and amendments (if any). Any referenced notes can be viewed at the following URL: http://genesis.gsfc.nasa.gov/nasanote.html Posted 11/18/99 (D-SN401892). (0322)

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