DETERMINATION OF AIR DENSITY, TEMPERATURE AND WINDS AT HIGH ALTITUDES
Annual summary rept. no. 2
UNIVERSITY COLL LONDON (UNITED KINGDOM) DEPT OF PHYSICS AND ASTRONOMY
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Techniques were developed for extending wind and temperature measurements to great heights. Grenade and TMA payloads used on Skylark, Nike- Cajun and Nike-Apache rockets are described. A multiplex system for acoustic recording comprising seven control frequencies amplitude modulated with pressure variations and ultra-violet and magnetic tape recording systems is also described. This system has the advantage of removing electrical noise encountered over long transmission lines and is capable of electronically reproducing signals. Its use has enabled the maximum altitude of detection of 355 gm grenades to be extended to 107 km. Details of F24 camera coverage and operation for the optical triangulation of grenades for the Sardinia firings in September 1965 are given. The development of specialized optical equipment is reviewed, and an analysis of data obtained at Eglin AFB, Florida and at Sardinia during 1965 is given. A summary is presented of the theoretical developments necessary for the reduction of data, and the next stages of the research are discussed.
- Atmospheric Physics