Purpose of the flight and payload description

STRATCOM (STRATospheric COMposition) was a long-term, multi-purpose program for integrated, correlated measurements of stratospheric parameters related to composition, thermodynamics, and radiative balance. It was a joint undertaking of several laboratories whose combined scientific, engineering, and field capabilities made possible an extensive program of multiple related measurements in the very complex and variable stratosphere. The program was born in 1968 by the initiative of the US Army's Atmospheric Sciences Laboratory (ASL), under the direction of Harold N. Ballard. Starting from the third mission in 1972, the program progresively incorporated other research institutions. A total of eight balloon flights were performed until the culmination of the effort in 1977.

Details of the balloon flight

Balloon launched on: 9/28/1977 at 12:51 mst
Launch site: Holloman Air Force Base, Alamogordo, New Mexico, US  
Balloon launched by: Air Force Geophysics Laboratory (AFGL)
Balloon manufacturer/size/composition: Zero Pressure Balloon Winzen - 11.600.000 cuft (Stratofilm - 0.5 mil - 0.9 cap)
Flight identification number: H77-57
End of flight (L for landing time, W for last contact, otherwise termination time): 9/28/1978 at 19:14 mst
Balloon flight duration (F: time at float only, otherwise total flight time in d:days / h:hours or m:minutes - ): 6 h 30 m

Postal cover issued on launch day commemorating the flight

External references

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