This report was prepared as ^n ati^ount ot work sponsored by the United btateb oovernmtnt NLither the United States nor the United State^ AtLnit, Energ^> Commission, nor any of their epiployees, no^ 3n> of their contractois subcontractor^ or their emplo>e>,s makes any vvarrarit> express or implied or a^sum s any legal liability or rtsponsibility foi ihe dcturdc> corn plefeness o-jsefulness of anv r lorrr itioii rtj^pai I'ui product or process disclut.'-d, or rt.pre'-ents that 's i e would not infringi-privately c-v^nt j rigliis

This report describes the expected performance of the XECF test assembly. Predictions are presented and discussed for all tests outlined in RN-S-0314, XECF Test Specification., and in modifications No. 1 and 2 thereof. The test-prediction analysis indicated that, under all test conditions considered5 the test-parameter limits would at no time be exceeded; and no unsafe conditions were disclosed that could result in damage to-the test article or facility. Descriptions of the engine system, the test facility, and the instrumentation system are included so the report can be used as a comprehensive reference document during quick-look analyses of test results.