NASA Logo

NTRS - NASA Technical Reports Server

Back to Results
Evaluation of Heat Transfer and Thermal Stability of Supercritical JP-7 FuelA series of electrically heated tube experiments was conducted to investigate the potential of JP-7 as a coolant under conditions relevant to a Mach 8 propulsion system. The heat transfer capabilities, carbon deposition, and material compatibility of JP-7 at surface temperatures up to 1700 F (927 C) were tested in 0.125 in. diameter tubes of 304 SS, Inconel 617, Haynes 188, Haynes 230, and 50150 Moly-Rhenium. The heat transfer to the coolant was modeled well by a Dittus-Boelter correlation at lower heat fluxes. At higher heat fluxes, audible instabilities were observed and corresponded to a significant enhancement in the coolant heat transfer. The carbon deposition rates in these tests were comparable to those in previous experiments at lower heat fluxes and much longer residence times. This result suggests that alternative paths of the deposition mechanism may be enhanced under high heat flux test conditions. Microscopic investigation of the post test tubes indicated that there was a significant layer of ordered carbon deposits that had not been seen in the tests at lower heat flux.
Document ID
19970026308
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Linne, Diane L. (NASA Lewis Research Center Cleveland, OH United States)
Meyer, Michael L. (NASA Lewis Research Center Cleveland, OH United States)
Edwards, Tim (Wright Lab. Wright-Patterson AFB, OH United States)
Eitman, David A. (Science Applications International Corp. Fountain Valley, CA United States)
Date Acquired
September 6, 2013
Publication Date
July 1, 1997
Subject Category
Propellants And Fuels
Report/Patent Number
AIAA Paper 97-3041
NAS 1.15:107485
NASA-TM-107485
E-10781
Report Number: AIAA Paper 97-3041
Report Number: NAS 1.15:107485
Report Number: NASA-TM-107485
Report Number: E-10781
Meeting Information
Meeting: Joint Propulsion Conference and Exhibit
Location: Seattle, WA
Country: United States
Start Date: July 6, 1997
End Date: July 9, 1997
Sponsors: American Inst. of Aeronautics and Astronautics, Society of Automotive Engineers, Inc., American Society for Electrical Engineers, American Society of Mechanical Engineers
Accession Number
97N25597
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

Related Records

There are no records associated with this record.
No Preview Available