Accession Number:

AD0673476

Title:

PERFORMANCE OF A 500-KJ MHD WIND TUNNEL,

Descriptive Note:

Corporate Author:

AEROSPACE CORP EL SEGUNDO CALIF LAB OPERATIONS

Report Date:

1968-03-01

Pagination or Media Count:

37.0

Abstract:

The operation of a pulsed MHD accelerator is described for a MHD wind tunnel application. The accelerator is designed to provide a 150 velocity increase from 15,500 ftsec to 24,000 ftsec, at constant enthalpy, of a gas at approximately atmospheric pressure. The accelerator gas source is a hot shot that heats potassium seeded nitrogen to 9000K and 1400 atm. The gas is expanded into a segmented electrode 94 pair MHD accelerator channel. After tunnel start-up, a 3-msec constant power pulse is switched on the electrodes so that current flow is approximately perpendicular to a quasi-steady 4-Wbsq m magnetic field. The power-on to power-off velocity ratio at the accelerator exit is determined from changes in the stagnation pressure and open circuit induced potential. Author

Subject Categories:

  • Test Facilities, Equipment and Methods
  • Plasma Physics and Magnetohydrodynamics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE