Accession Number : AD0283342

Title :   A SOLAR ASPECT DEVICE FOR SOUNDING ROCKETS

Descriptive Note : Technical note.

Corporate Author : BALLISTIC RESEARCH LABS ABERDEEN PROVING GROUND MD

Personal Author(s) : CONLEY,JOSEPH M. ; PROSSER,JAMES F.

Report Date : JUN 1962

Pagination or Media Count : 40

Abstract : An aspect device, developed for use under the particular conditions of a near-vertical rocket firing at or near sunrise or sunset, is described. It utilizes two mutually perpendicular, flat Si solar cells, one looking (at launch (Astron omy), Electronic circuits, Flight testing, Hygrometers, Temperature, Voltage, Upper atmosphere, Instrumentation, Optical tracking, Telemetering, Earth, Moisture, Direction finding. Identifiers: NIKE-CAJUN.An aspect device, developed for use under the particular conditions of a near-vertical rocket firing at or near sunrise or sunset, is described. It utilizes two mutually perpendicular, flat Si solar cells, one looking (at launch) 45 degrees down from the horizontal, the other looking 45 degrees up. The output of a ground glass covered cell, as a function of angle of incidence, Phi, is found to be cos to the 1.12 power Phi, from which it follows that (Theta - 45 degree) = arc tan (I sub 1 divided b I sub 2) to the .893 power where Theta is the angle between the rocket axis and the rocket-sun vector, and I sub 1 and I sub 2 are the cell currents. When the two cell outputs are telemetered over the same channel, no calibration is needed. The device is also applicable to midday firings. (Author)

Descriptors :   *ATMOSPHERIC SOUNDING, *SOLAR CELLS, *SOUNDING ROCKETS, ALBEDO (ASTRONOMY), CIRCUITS, EARTH, ELECTRIC POTENTIAL, FLIGHT TESTING, HYGROMETERS, INSTRUMENTATION, MOISTURE, OPTICAL TRACKING, SILICON, TELEMETER SYSTEMS, TEMPERATURE, UPPER ATMOSPHERE

Distribution Statement : APPROVED FOR PUBLIC RELEASE