Dahlgren Division, Naval Surface Warfare Center, 17320 Dahlgren Road, Dahlgren, VA 22448-5100

B -- TESTING OF ADVANCED DEVELOPING MATERIALS TO HIGH-VELOCITY PARTICLE IMPACTS SOL N00178-97-Q-0137 DUE 050797 POC Geri Scott 540-653-4104 E-MAIL: Naval Surface Warfare Center, Dahlgren Division, gscott@nswc.navy.mil. The Dahlgren Division of the Naval Surface Warfare Center, Dahlgren, VA is soliciting proposals on a sole source basis for a fixed price contract for the reaction of advanced developing materials to high-velocity particle impacts such as would be experienced during high-speed flight through rain and/or cloud environments. This characterization data will be obtained in the Single Impact Facility (SIG) at General Research Corp (GRC). The scope of the effort will consist of two phases. Phase I will be directed towards the fabrication and sorting of the particles used to simulate the impact environment and demonstration of the range of impact velocities that can be obtained with the current facility launcher capability. In Phase II, material response data will be obtained to characterize the erosion resistance of the advanced program materials of interest. It is anticipated that sufficient data will be obtained from Phases I and II to allow adequate evaluation of these materials to assess their potential. Phase I shall establish the full range of particle sizes and launch velocities that provide efficiently obtained 22 shots will be required for Phase I. GRC techniques will be utilized to produce sufficient nylon beads of the correct size and sphericity to support the needs of Phases I and II. This will include the following functions: (1) setup for in-house nylon bead protection; (2) Acquisition of required commercial materials; (3) manufacture of candidate beads; (4) Sieving of the candidates to obtain the correct sizes (300, 600 and 900 um); (5) elimination of non-spherical specimens; (6) define the velocity range that can be obtained with adequate survivability for these beads. The desired range of impact velocity is 3.0 to 6.0 km/s. There is high confidence that the beads will survive at the lower end of the desired velocity range. It is anticipated that bead velocities as high as 4.5 ro 6.0 km/s can be obtained without significant launch failures; (7) Test results shall be either contractor written format or disk. Phase II will (GRC) obtain additional impact response data for program material candidates. Twenty-three (23) shots will be required for Phase II. The specific combination of impact particle size and velocity will be determined in Phase I. GRC will perform the following functions in Phase II: (1) mount test instrumentation on material specimens; (2) mount test specimens in test facility (note that specimens will be machined to the desired test configuration prior to delivery to GRC); (3) conduct impact tests at specified conditions; (4) record bead velocity and condition at impact; (5) record stress level produced in test specimen at impact; (6) measure the material removed from the target as a result of the impact; and (7) prepare a report summarizing the test conditions and results. GRC will perform the following tasks: (1) assist in test planning; (2) conduct the tests; (3) record and reduce the data; and (4) prepare a test report. The program will be conducted during the second and third quarter of FY97. All responsible quotes will be considered by the Naval Surface Warfare Center (NSWC) Dahlgren Division, Dahlgren, VA. Fax number is 540-653-7016/or 540-653-6812, Attn: Geri Scott, Code SD18. Telephone number is 540-653-4104. THE GOVERNMENT WILL NOT ISSUE A WRITTEN SOLICITATION DUE TO THE FACT THAT ALL NECESSARY INFORMATION IS CONTAINED HEREIN. Any responses to the above solicitation must be in writing or faxed to the address/fax number listed herein. This solicitation will be awarded using Simplified Acquisition Procedures. Testing and evaluation will be done at General Research Corporation. Closing date is 07 May 1997. Anticipated award date is by 15 May 1997. (0108)

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