DEVELOPMENT AND OPERATION OF AN ELECTRICAL-RESISTANCE AIR HEATER FOR THE ARL TWENTY-INCH HYPERSONIC WIND TUNNEL.
Internal scientific rept.,
AEROSPACE RESEARCH LABS OFFICE OF AEROSPACE RESEARCH WRIGHT-PATTERSON AFB OHIO
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An electrical resistance heater has been designed and fabricated to preheat the air in the 20-inch hypersonic wind tunnel of the Fluid Dynamics Facilities Laboratory located at Wright-Patterson Air Force Base. The heater was designed to heat air to 2800R at mass flow ranges of one-half pound per second to ten pounds per second. Stagnation pressure can be varied between 600 psi to 2500 psi. The report traces the development of the present heater and includes a heat transfer analysis required to design this type of heater. In addition, a comparison is made between experimental and theoretical results. The heater described in the report has been successfully operated for several hundred hours during a three year period. The report presents recommendations that might be made to improve this highly essential component. Author
- Air Conditioning, Heating, Lighting and Ventilating
- Test Facilities, Equipment and Methods