NATIONAL CENTER FOR ATMOSPHERIC RESEARCH BOULDER COLO
The National Center for Atmospheric Research organized and provided program management for a balloon expedition to study cosmic rays in the vicinity of the equator during the International Quiet Sun Year IQSY. A joint United States - India activity, the program was conducted in Hyderabad, India during the late winter and early spring of 1965. A total of 17 flights were scheduled during the period 6 March to 9 April, 1965. Of these, 13 were successful, three were ground failures, and one balloon burst during ascent. The heaviest payload flown weighed 2858 lb. All scientific packages scheduled were successfully flown and recovered. Author
Prepared in cooperation with Naval Research Lab., Washington, D. C. Joint United States - India International Quiet Sun Year Equatorial Expedition 6 Mar-9 Apr 1965.