Accession Number : AD0448219

Title :   THE NOL 3 MEGAWATT RESEARCH ARC,

Corporate Author : NAVAL ORDNANCE LAB WHITE OAK MD

Personal Author(s) : Winkler, Eva M. ; Lee, R. E. ; Humphrey, R. L. ; Milner, L. J.

Report Date : 13 FEB 1964

Pagination or Media Count : 1

Abstract : The design and initial performance of a 3 MW electric arc air heater are discussed. This arc will be used as a heat source in a true temperature wind tunnel designed, and currently under construction, for operation at Mach numbers between 3 and 12 at supply pressures of 5 to 150 atmospheres and total energy levels up to 5300 Btu/lb. The arc heater operates on 3-phase a.c. Its components, control systems and instrumentation are described in detail. The initial performance studies were carried out using a Mach number 3 nozzle with the flow expanding into the ambient atmosphere. These tests were carried out at supply pressures up to 45 atmospheres. The highest gas energy level obtained was 7700 Btu/lb. (Author)

Descriptors :   *ELECTRIC ARCS, *HYPERSONIC WIND TUNNELS, HEATERS, ELECTRICAL EQUIPMENT, WIND TUNNEL NOZZLES, CONTROL PANELS, INSTRUMENTATION, OPERATION, HEAT TRANSFER, PERFORMANCE(ENGINEERING).

Distribution Statement : APPROVED FOR PUBLIC RELEASE