Accession Number : AD0452942


Title :   DEVELOPMENT OF A STEADY-FLOW JXB ACCELERATOR FOR WIND TUNNEL APPLICATION


Corporate Author : ARNOLD ENGINEERING DEVELOPMENT CENTER ARNOLD AFS TN


Personal Author(s) : Tempelmeyer, K E ; Windmueller, A K ; Rittenhouse, L E


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/452942.pdf


Report Date : Dec 1964


Pagination or Media Count : 58


Abstract : A description is given of the various aspects of an experimental program which is currently in progress at the Arnold Engineering Development Center to develop a steady-flow, direct current, JxB accelerator for a wind tunnel driver. Electrical discharge and material tests have been made in a supersonic seeded nitrogen plasma at static temperature and pressures near 3000 K and 1 atm, respectively. Cooled copper electrodes set flush in a wall could be made to carry sufficient electrical currents to make MHD acceleration feasible and still have negligible erosion. Sprayed beryllium oxide was found to be the best insulation material of those tested for the conditions at which a highpressure accelerator must operate. The design of a water-cooled accelerator having 117 pairs of segmented electrodes and the initial success of prooftests with a prototype twenty-pair electrode accelerator are described.


Descriptors :   *SUPERSONIC WIND TUNNELS , *ION ACCELERATORS , MAGNETIC FIELDS , WATER , ACCELERATION , HIGH TEMPERATURE , PLASMAS(PHYSICS) , COOLING , ONE DIMENSIONAL FLOW , BERYLLIUM COMPOUNDS , MAGNETOHYDRODYNAMICS , PLASMA JETS , OXIDES , ELECTRODES , ELECTRIC DISCHARGES , INSTRUMENTATION , IONIZATION


Subject Categories : Test Facilities, Equipment and Methods
      Electricity and Magnetism


Distribution Statement : APPROVED FOR PUBLIC RELEASE