Accession Number : AD0634976

Title :   HIGH ALTITUDE RESEARCH AT THE APPLIED PHYSICS LABORATORY.

Descriptive Note : Rept. for Mar 46-Feb 51,

Corporate Author : JOHNS HOPKINS UNIV SILVER SPRING MD APPLIED PHYSICS LAB

Personal Author(s) : Fraser, L. W.

Report Date : MAY 1951

Pagination or Media Count : 44

Abstract : This report summarizes five years of work in which scientific experiments were performed principally through the use of V-2 and Aerobee rockets. A series of direct measurements was made of the total intensity of the cosmic radiation above the appreciable atmosphere over a wide range of geomagnetic latitudes. The primary cosmic-ray energy spectrum was determined, as well as the magnitude and sign of the charge; and a number of experiments in the reactions of the primaries in matter were performed. Solar spectra to wavelengths shorter than 2900 Angstrom units were obtained by means of rocket-borne spectrographs. The distribution of ozone with altitude in the earth's atmosphere was measured. Exploration of the earth's magnetic field at high altitude and at two geomagnetic latitudes disclosed evidence of a current layer in the E region of the ionosphere. High-altitude photographic techniques were developed through the use of rocket-borne cameras. By the use of the Aerobee rocket as a vehicle, aerodynamic research on a ramjet diffuser was carried out. (Author)

Descriptors :   (*ATMOSPHERIC SOUNDING, *SOUNDING ROCKETS), (*IONOSPHERE, ATMOSPHERIC SOUNDING), COSMIC RAYS, SOLAR RADIATION, SPECTROSCOPY, GEOMAGNETISM, HIGH ALTITUDE, PHOTOGRAPHY, AERODYNAMICS, RESEARCH MANAGEMENT

Subject Categories : Atmospheric Physics
      Unmanned Spacecraft

Distribution Statement : APPROVED FOR PUBLIC RELEASE