NASA Langley Research Center, Mail Stop 126, Hampton, Va. 23681-0001

A -- MATERIALS RESEARCH FOR HIGH SPEED CIVIL TRANSPORT AND GENERIC HYPERSONICS SOL 1-161-DM.1746 POC Darlene T. Baxter (804) 864-2472. This is a notice of intent to increase the effort under NASA Contract NAS1- 20014 on a noncompetitive basis in accordance with 10 U.S.C. 2304(c)(1)-- ''Only One Responsible Source,'' to McDonnel Douglas Aerospace, Advanced Transport Aircraft Systems, 2401 East Wardlow Road, Long Beach, CA 90807- 4418. This is a continuation of effort for Materials Research for High Speed Civil Transport and Generic Hypersonics currently being provided by McDonnel Douglas Aerospace. This effort involves the development of elevated temperature airframe materials and structures technology. The efforts involves the development of advanced metallic alloys and fiber reinforced composites, fabrication technology, and design methodology for actively cooled thermal structures. This research shall also include the development and analysis of: high temperature Stitched Resin Film Infused materials characterization and demonstration articles, drapeability of stitched dry preforms materials and demonstration articles, low cost beta titanium alloy commercialization, characterization, and associated low cost fabrication methods, non-structural components for high temperature applications, affordable high temperature stitched resin film infused applications on supersonic and hypersonic vehicles, super plastic forming/diffusion bonding Prototype on the hot high lifting devices, and titanium matrix composites landing gear for the High Speed Civilian Transport and hypersonic aircraft. McDonnel Douglas has the unique expertise to develop advanced alpha+beta, alpha and beta titanium alloys with enhanced superplastic forming characteristics, higher specific modulus and strength, improved creep resistance, better stress corrosion resistance, and higher temperature capability. McDonnel Douglas has the necessary facilities and equipment for fabrication and testing high-temperature metallic structure. Their unique fabrication and experimental capabilities include superplastic forming and diffusion bonding equipment for large structural components, development and fabrication facilities for multisheet honeycomb and sandwich construction for large structural components, and specialized temperature/humidity/altitude/vacuum chambers for conducting durability testing under simulated environmental conditions for hypersonic flight. See Note 22****. Collect calls not accepted. (0071)

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