Accession Number : AD0451305


Title :   NON-CONTAMINATING COMBUSTION AIR HEATER FOR WIND TUNNELS


Corporate Author : ARNOLD ENGINEERING DEVELOPMENT CENTER ARNOLD AFB TN


Personal Author(s) : Dietz, Jr, Robert O


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/451305.pdf


Report Date : Nov 1964


Pagination or Media Count : 30


Abstract : An analysis of a wind tunnel combustion air heater that will provide uncontaminated air at temperatures above 4000 R is presented. Concept of the heater involves combustion of metals that yield oxides having melting temperatures above 4000 R. Heat is transferred to air from liquid metaloxide particles formed in a metal-oxygen combustor. The oxide particles solidify during the heat-transfer process and are separated from the air by centrifugal forces. A portion of the heated air is bled from the periphery of the separator to carry the oxide particles out of the wind tunnel air supply system. Calculations presented show that five-micron aluminum-oxide particles can be separated from high density air using a tangential velocity of 200 ft/sec in a centrifugal separator. Experimental research needed to verify results of the analyses are outlined.


Descriptors :   *AIR HEATERS , *HYPERSONIC WIND TUNNELS , *WIND TUNNELS , COMBUSTION , COMBUSTION CHAMBERS , CONFIGURATIONS , CONSTRUCTION , DENSITY , FUELS , HEATERS , HIGH TEMPERATURE , OXIDES , PARTICLES , PRESSURE , THERMODYNAMICS


Subject Categories : Air Condition, Heating, Lighting & Ventilating
      Test Facilities, Equipment and Methods


Distribution Statement : APPROVED FOR PUBLIC RELEASE