NASA Lewis Research Center, 21000 Brookpark Road, Cleveland, Ohio 44135

A -- CRYOGENIC FLANGE STUDY VIBRATION TESTING SOL RFO3-028491 DUE 062095 POC Glen M. Williams, Contract Specialist 216/433-2885 who may be contacted at Mail Stop 500-306. Only written requests for copies of the solicitation will be accepted via mail or fax at (216) 433-5185. Requests shall include the solicitation no. RFO3-028491 and your company's name, phone no., and mailing address. NASA Lewis Research Center plans to procure services to conduct vibrational testing of flanges installed in a section of flight weight duct with liquid hydrogen flowing through it. Testing with gaseous helium is also needed. These flanges are used in rocket engine systems. Up to four flange designs will be tested under vehicle transportation load and flight load conditions. Testing to failure (a leak occurs) is needed to compare the margins of safety of each flange design. Vibrational loads needed range from 0 to 10 g's in amplitude and up to 2000 Hz in frequency. A minimum of 80 psig internal pressure must be maintained during testing. Some technique must be used to determine if the flange is leaking, possibly a mass spectrometer. The flange joint connects two sections of 5-inch inner diameter ducting that is approximately six feet long when assembled. One section of the duct has a 45 degree bend. Approximately 15 channels of accelerometer, strain gage, and thermocouple data will need to be recorded as well as any leakage. Test data in digital and/or magnetic tape format and a test report summarizing the results for each flange tested are deliverables. All test results are needed by September 1, 1995. Delivery to Cleveland, Ohio. Delivery schedule is 60 calendar days after contract award. The date set for receipt of offers is approximate. This procurement is being conducted under the NASA midrange pilot test program approved April 16, 1993. All responsible sources may submit an offer which will be considered. (0130)

Loren Data Corp. http://www.ld.com (SYN# 0012 19950511\A-0012.SOL)