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

A -- UPDATES TO THE "CRYOGENIC FLUID MANAGEMENT" SOFTWARE. SOL 8-1-8-EP-C0061 DUE 071398 POC Chrissa K. Hall, Contracting Officer, Phone (256) 544-5468, Fax (256) 544-9080, Email chrissa.hall@msfc.nasa.gov -- Valerie N. Holmes, Contracting Officer, Phone (256)544-0314, Fax (256)544-4400, Email valerie.holmes@msfc.nasa.gov WEB: Click here for the latest information about this notice, http://nais.nasa.gov/EPS/MSFC/date.html#8-1-8-EP-C0061. E-MAIL: Chrissa K. Hall, chrissa.hall@msfc.nasa.gov. NASA/MSFC plans to issue a Request for Quotation (RFQ) for upgrades to the Cryogenic Fluid Management Simulator which was used by the Propulsion Systems Branch to predict cryogenic fluid management conditions for several solar thermal vehicles. The Simulator was developed under an SBIR PHASE II contract with Creare, Inc., to be used as a tool by knowledgeable design engineers to help facilitate investigations of design alternatives for cryogenic fluid management systems. The purpose of the task proposed under this RFQ is to further develop the Creare software, such that the software can be used to predict outcomes for the cryogenic fluid management tests performed at the Marshall Space Flight Center and to support the development of future flight experiments. Task description: 1. Upgrade tank internal heat transfer analysis to more closely predict the rate of pressure rise in the MHTB. This upgrade will consider only a point source (AXIAL JET) mixer. 2. Upgrade tank geometrical model (wetted surface vs. volume) for MHTB. 3. Validate model against MHTB data with AXIAL jet point source mixer at 90% fill level. 4. Validate model against MHTB data with AXIAL jet point source mixer at 50% fill level. 5. Upgrade mixer models to accurately predict MHTB pressure in experiments using radial (spray bar) mixer. 6. Validate model against MHTB data with radial spray bar mixer at 90% fill level. 7. Validate model against MHTB data with radial spray bar mixer at 50% fill level. 8. Upgrade model for tank internal heat transfer to account for helium cover gas. 9. Validate model against newly acquired MHTB data for 50% fill with HE. Deliverables: 1. Produce a new release version of the software which includes the work listed in the task description above. 2. Provide updates to existing documentation (user manual and analysis methods report) which explains the changes made. 3. Provide a brief technical memorandum which documents the qualification analysis which was performed for validation of the updated code. Payment to be made in two increments: 1. On completion of task # 7 2. Completion on task #9 The period of performance is 13 weeks from the effective date of the order. This procurement is being conducted under the Simplified Acquisition Procedures (SAP). NASA/MSFC intends to purchase the items from from Creare, Inc. on a sole source basis under the statutory authority of 10 U.S.C. 2304(c)(1) -- Only one responsible source. Creare, Inc. is the only source that can satisfy the requirements. They were the first to develop the code which is proprietary and only Creare, Inc. has the source code on which the update needs to be completed. The Government does not intend to acquire a commercial item using FAR Part 12. See Note 26. 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 competitivebasis. Responses received after the 15 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. An Ombudsman has been appointed. See Internet Note "B". Posted 06/29/98 (0180)

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