NASA/Langley Research Center, Mail Stop 144, Industry Assistance Office, Hampton, VA 23681-0001

A -- PRELIMINARY DESIGN STUDY OF ACTIVELY-COOLED ENGINE COWL LEADING EDGES FOR HYPERSONIC FLIGHT VEHICLES SOL 1-168-LA.1173 DUE 042299 POC Kimberly D. Duncan, Contracting Officer, Phone (757) 864-3566, Fax (757) 864-8863, Email k.d.duncan@larc.nasa.gov -- Sandra M. Glenn, Contracting Officer, Phone (757)-864-2413, Fax (757) 864-8863, Email S.M.GLENN@larc.nasa.gov WEB: Click here for the latest information about this notice, http://nais.nasa.gov/EPS/LaRC/date.html#1-168-LA.1173. E-MAIL: Kimberly D. Duncan, k.d.duncan@larc.nasa.gov. NASA/LaRC plans to issue a Request for Quotation (RFQ) for a Preliminary design of actively-cooled engine cowl leading edges for hypersonic flight vehicles. They shall conduct analyses to accomplish definition of an actively cooled engine inlet leading edge. The study shall determine the modifications needed to an existing cooled leading edge which shall allow exposure to heating which shall occur during Mach 10 flight of the Hyper-X vehicle. Methods that shall be studied to improve the maximum heating capability of the existing design shall include the use of: a) thinner foils to form the cooling channels in the nose region; b) surface coatings to increase the allowable temperature of the external surface; and c) coolant vaporization (two-phase-flow) in the thermal channels. This procurement is being conducted under the Simplified Acquisition Procedures (SAP). NASA/LaRC intends to purchase the items from Saddleback Aerospace, Issaquah, WA, unique capabilities available from only one source. Saddlebackis providing state-of-the-art analysis of actively cooled leading edges for the Hyper-X flight vehicle and has the ability to rapidly fabricate the cooled leading edge, which is being analyzed, and a flight article using subject technology. They have proprietary capabilities for design, analysis, and fabrication of actively cooled leading edges for hypersonic vehicles which shall be exposed to extremely high heat flux. Saddleback has the capability to fabricate foil heat exchangers with integral coolant passages in the shapes which are needed for hypersonic vehicle leading edges. Their foil-heat-exchanger design and analysis computer code is unique and has been validated with experimental data from leading edges which were fabricated using this process. No other company has these required unique capabilities. The Government does not intend to acquire a commercial item using FAR Part 12. See Note 26. See Note 22. Interested firms have 15 days from the publication of this synopsis to submit in writing to the identified point of contact, their qualifications/capabilities. Such qualifications/capabilities will be used solely for the purpose of determining whether or not to conduct this procurement on a competitive basis. Responses received after the 15 days or without the required information will be considered non-responsive to the synopsis and will not be considered. A determination by the Government to not compete this proposed effort on a full and open competitive basis, based upon responses to this notice is solely within the discretion of the Government. Oral communications are not acceptable in response to this notice. All responsible sources may submit an offer which shall be considered by the agency. An Ombudsman has been appointed. See Internet Note "B". Any referenced notes can be viewed at the following URLs: http://cbdnet.access.gpo.gov/num-note.html and http://genesis.gsfc.nasa.gov/nasanote.html Posted 04/13/99 (D-SN319008). (0103)

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