NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Collections About News Help Login
Back to Results
Experimental and Numerical Characterization of a Steady-State Cylindrical Blackbody Cavity at 1100 Degrees CelsiusA blackbody calibration furnace at the NASA Dryden Flight Research Center is used to calibrate heat flux gages. These gages are for measuring the aerodynamic heat flux on hypersonic flight vehicle surfaces. The blackbody is a graphite tube with a midplane partition which divides the tube into two compartments (dual cavities). Electrical resistance heating is used to heat the graphite tube. This heating and the boundary conditions imposed on the graphite tube result in temperature gradients along the walls of the blackbody cavity. This paper describes measurements made during steady-state operation and development of finite-difference thermal models of the blockbody furnace at 1100 C. Two configurations were studied, one with the blackbody outer surface insulated and the other without insulation. The dominant modes of heat transfer were identified for each configuration and the effect of variations in material properties and electric current that was passed through the blackbody were quantified.
Document ID
20000080481
Acquisition Source
Armstrong Flight Research Center
Document Type
Preprint (Draft being sent to journal)
Authors
Horn, Thomas J. (NASA Dryden Flight Research Center Edwards, CA United States)
Abdelmessih, Amanie N. (Saint Martin's Coll. Lacey, WA United States)
Date Acquired
September 7, 2013
Publication Date
August 1, 2000
Subject Category
Fluid Mechanics And Thermodynamics
Report/Patent Number
H-2403
NASA/TM-2000-209022
NAS 1.15:209022
NHTC2000-12140
Meeting Information
Meeting: 34th National Heat Transfer Conference
Location: Pittsburgh, PA
Country: United States
Start Date: August 20, 2000
End Date: August 22, 2000
Funding Number(s)
PROJECT: RTOP 522-32-24
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