WL/PK BLDG 7 2530 C ST WRIGHT-PATTERSON AFB OH 45433-7607

A -- RADIATIVELY DRIVEN WIND TUNNEL CONCEPT EVALUATION POC Norman E. Scaggs, Project Engineer, WL/FIMO, (513) 255-6317. This is a modification to the synopsis entitled ''Radiatively Driven Wind Tunnel Concept Evaluation'', dated 95SEP22. Sentence 1 is changed to read ''Sources Sought....''. The sentence ''This program will not be republicized prior to solicitation'' is hereby deleted. The following information is added: Capability statements are required for all contractors. Capability statements should document the contractors' specific experience in the following areas: (1) Developing implementing and testing computational fluid dynamic models based on ultrahigh pressure, real gas equations-of-state, including viscous effects, energy coupling, energy transport, thermalization, and chemical kinetics for a realistic appraisal of wind tunnel performance. (2) Developing ultrahigh pressure experimental facilities for the measurement of equation-of-state parameters and the expansion process of high pressure, high density air through supersonic, contoured nozzles. (3) Undertaking the modeling and measurement of high pressure energy absorption mechanisms over a pressure range up to at least 1,000 atmospheres with a temperature range up to at least 800 degrees Kelvin. (4) Performing modeling and experimental validation tests of dynamic relaxation processes and energy thermalization up to at least 1,000 atmospheres and 800 degrees Kelvin. (5) Developing and implementing synchronized, nonintrusive diagnostic instrumentation for the measurement of flow quality, including flow velocity profiles, flow density and temperature profiles with high enough resolution to accurately measure small scale ((( 1 mm) boundary layers, and other relevant flow quality parameters. (6) Performing evaluations of existing high pressure test facilities, including facilities in Russia, to establish their capabilities as front-end drivers for this facility. (7) Overseeing collaborative efforts on the evaluation of ultrahigh energy laser, microwave, and beam sources, including energy coupling mechanisms, energy transport issues, ionization, and absorption into appropriate scale nozzle geometries. (8) Coordinating efforts with Russian and US Laboratories and institutions for the study of high-pressure absorption laser beam propagation, microwave sstem design, ultrahigh pressure generation, thermodynamic characterization and transport of air, flow chemistry, energy addition, and the development of ultrahigh pressure, large-scale devices, pumps and static test cells. (9) Overseeing the planning and implementation of appropriate scale energy addition experiments which will demonstrate the feasibility of this approach to the design of hypersonic wind tunnels. Such an experiment is expected to require an energy source in the range of 10,000 to 1,000,000 watts, coupled into a supersonic flow in such a manner that a significant and predictable change in Mach number occurs. The result of this energy addition process must be fully characterized by nonintrusive measurement methods. (10) Recommending the most promising radiant energy coupling approach (laser, microwave, ion/neutral beam, etc.) (11) Developing and, as far as possible, validating predictive code for heat addition using lasers and microwave sources and applying the code to assess flow quality. (12) Developing a database on thermodynamic and transport properties of air using available modeling and, where possible, experimental measurements over the appropriate range. Resumes of key contractor personnel should be included. Capability statements shall be submitted by 95OCT20. (0269)

Loren Data Corp. http://www.ld.com (SYN# 0007 19950927\A-0007.SOL)