Accession Number : AD0831480

Title :   ROCKET ANTENNA MULTIPACTOR BREAKDOWN UNDER DYNAMIC PRESSURE CONDITIONS.

Descriptive Note : Interim rept.,

Corporate Author : STANFORD RESEARCH INST MENLO PARK CALIF

Personal Author(s) : August,Gerald ; Nanevicz,Joseph E. ; Chown,John B.

Report Date : DEC 1967

Pagination or Media Count : 45

Abstract : An anomalous high-altitude voltage breakdown on a VHF antenna aboard Nike-Cajun Rocket AD 6.841 is investigated. A previously proposed cause of the anomaly, a dynamic pressure variation interacting with a multipactor discharge, is experimentally investigated. The multipactor discharge under dynamic pressure conditions results in a unique form of voltage breakdown hitherto undescribed. This discharge form is called a gas-augmented-multipactor (GAM) discharge. The GAM DISCHARGE MAY PERSIST FOR SEVERAL MINUTES) Certain aspects of the GAM discharge more closely resemble the usual gas discharge breakdown than they do the usual multipactor discharge. The GAM discharge has an effect upon antennas comparable to that of the usual gas discharge breakdown at certain pressures in the latter's operating regime. The flight-test record is examined and compared with the laboratory data. It is concluded that the anomalous breakdown was due to a GAM discharge. (Author)

Descriptors :   (*ROCKET ANTENNAS, *ELECTRIC DISCHARGES), VERY HIGH FREQUENCY, HIGH ALTITUDE, ANOMALIES, INTERACTIONS, PRESSURE, SOUNDING ROCKETS

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE