Nov 21 1964
From The Space Library
Two NASA satellites EXPLORER XXIV and EXPLORER XXV-were successfully launched into orbit from Vandenberg AFB, Calif., aboard a single four-stage Scout rocket. This marked the first time NASA had orbited dual spacecraft with a single booster. The double payload was designed to provide more detailed information on complex radiation-air density measurements. EXPLORER XXIV (Air Density satellite) was a 12-ft.-dia., 19-lb. polka-dotted sphere identical to EXPLORERS IX and XIX. It was covered with aluminum foil to reflect both sunlight and radio waves, approximately 4,000 white spots on the surface provided temperature control. EXPLORER XXIV would provide three types of global comparative measure-ments: (1) high-altitude air density; (2) sources of atmospheric heat through comparison of data with Injun and other satellites; and (3) density and temperature variations of the atmosphere as a function of latitude. Orbital parameters were: apogee, 1,550 mi.; perigee, 327 mi, period, 116 min.; and inclination. 81°. EXPLORER XXV (Injun-B), a 2-ft.-dia., 90-lb. metal satellite bearing 16 radiation sensors to measure protons and electrons in various ranges of energy, was roughly spherical in shape with 40 flat surfaces, 30 of them studded with solar cells. Orbital parameters were: apogee, 1,548 mi.; perigee, 326 mi.; period, 116 min.; and inclination, 81°. Tracking data after one complete orbit indicated that the satellites were close to planned orbit with all instruments operating. (NASA Release 64-284; Goddard News, 11/30/64)
November 21: Univ. of Pennsylvania announced a team of archeologists, using a rubidium magnetometer intended for outer space, had found what may be the 2,500-year-old ruins of the fabled Greek city of Sybaris. (AP, Omaha World Herald, 11/22/64)
Vice Adm. Hyman G. Rickover (USN) Was selected as recipient of the 1964 Enrico Fermi Award for his contributions to development of nuclear power for submarines and power-generating plants. Rickover was the first engineer-administrator ever to receive the award. (Phil. Inquirer, 11/22/64).
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