The cryogenic feedthrough test rig (CFTR) allows testing of instrumentation feedthroughs at liquid oxygen and liquid hydrogen temperature and pressure extremes (dangerous process fluid) without actually exposing the feedthrough to a combustible or explosive process fluid. In addition, the helium used (inert gas), with cryogenic heat exchangers, exposes the feedthrough to that environment that allows definitive leak rates of feedthrough by typical industry-standard helium mass spectrometers.
This work was done by Antony Skaff and Daniel Schieb of Sierra Lobo, Inc. for Stennis Space Center.
Inquiries concerning rights for its commercial use should be addressed to:
Sierra Lobo, Inc.
11401 Hoover Rd.
Milan, OH 44846
Refer to SSC-00299-1, volume and number of this NASA Tech Briefs issue, and the page number.