NASA/George C. Marshall Space Flight Center, Procurement Office, Marshall Space Flight Center, AL 35812

A -- ROBUST LOW COST COMBUSTION CHAMBER SOL 1-8-EJ-B9563 DUE 052998 POC Michael R. Sosebee, Contracting Officer, Phone (205) 544-0415, Fax (205) 544-9080, Email mike.sosebee@msfc.nasa.gov -- Beth W. Ewing, Contract Specialist, Phone (205) 544-0351, Fax (205) 961-0059, Email beth.ewing@msfc.nasa.gov WEB: Click here for the latest information about this notice, http://nais.nasa.gov/EPS/MSFC/date.html#1-8-EJ-B9563. E-MAIL: Michael R. Sosebee, mike.sosebee@msfc.nasa.gov. NASA/MSFC plans to issue a Request for Quotation (RFQ) for Robust Low Cost Combustion Chamber. This procurement is being conducted under the Simplified Acquisition Procedures (SAP). NASA/MSFC intends to purchase the items from Plasma Processes, Statement of Work -- Robust Low Cost Combustion Chamber: Objective: The object of this work is to vacuum plasma spray (VPS) Cu-8Cr-4Nb material as dense as possible, with as low oxygen content as possible, to develop the best low cycle fatigue (LCF) properties as possible. Tasks: The contractor shall perform the following tasks: Task 1: The contractor shall investigate materials and processes to facilitate the easy removal of the mandrel from the as-sprayed Cu-8Cr-4Nb combustion chambers. The contractor shall evaluate graphite, mild steel, and other materials as necessary during this investigation. Task 2: The contractor shall review failure analysis of previous samples to evaluate processing effects on testing performance. The contractor shall investigate modifications to VPS processing (cleaner powder, higher temperature etc.) in order to improve properties. Task 3: The contractor shall vacuum plasma spray bulk Cu-8Cr-4Nb on mandrels to produce material property specimens. The contractor shall fabricate four mandrels to yield 48 LCF, 48 tensile, 8 thermal conductivity, and 16 density/hardness samples. The contractor shall follow the experimental procedure provided in the table below. The contractor shall evaluate oxygen content samples for the as-sprayed, vacuum anneal/HIP, and HIP conditions. Processing HIP @ 1750 *F HIP @ 1775-1800 *F VA/1 hr. HIP-Slow Cool 6 Tensile, 6 LCF, 1 Thermal Conductivity, 2 Density/Hardness 6 Tensile, 6 LCF, 1 Thermal Conductivity, 2 Density/Hardness VA/1 hr. HIP-Rapid Cool 6 Tensile, 6 LCF, 1 Thermal Conductivity, 2 Density/Hardness 6 Tensile, 6 LCF, 1 Thermal Conductivity, 2 Density/Hardness 4 hr. HIP-Slow Cool 6 Tensile, 6 LCF, 1 Thermal Conductivity, 2 Density/Hardness 6 Tensile, 6 LCF, 1 Thermal Conductivity, 2 Density/Hardness4 hr. HIP-Fast Cool 6 Tensile, 6 LCF, 1 Thermal Conductivity, 2 Density/Hardness 6 Tensile, 6 LCF, 1 Thermal Conductivity, 2 Density/Hardness VA = 4 Hour Vacuum Anneal @ 1750 *F Slow Cool = 5 *C per 1 minute (simulated braze cycle) Task 4: The contractor shall machine and test vacuum plasma sprayed Cu-8Cr-4Nb; Cu or NARloy-Z; and extruded Cu-8Cr-4Nb thermal property samples. The contractor shall perform thermal diffusivity and specific heat measurements. The contractor shall report thermal conductivity values from RT to 700*C for each condition listed above. Task 5: The contractor shall provide engineering support to coordinate samples from different VPS runs, through different heat treatments. The contractor shall provide engineering support to obtain oxygen content, density and Rockwell B Hardness tests at each step along the process in order to obtain the maximum properties. The contractor shall provide engineering support to insure samples are machined and tensile and LCF tested at high temperature to confirm the previous tests to obtain the best product possible. Enginering support shall not exceed 200 hrs. Period of Performance: 12 Months DELIVERABLEs: A final report will be produced at the completion of the program detailing the work conducted as well as data and other information obtained during the course of the project. GFE: 250 lbs. of Cu-8Cr-4Nb powder will be provided by NASA-MSFC for the program. The Government intends to acquire a commercial item using FAR Part 12. Any referenced notes can be viewed at the following URL: http://genesis.gsfc.nasa.gov/nnotes.htm. Interested firms have 10 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 10 days or without the required information will be considered nonresponsive 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. (0138)

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