Purpose of the flight and payload description

The payload was composed by a solar-oriented, high-energy neutron detector of the proton-recoil type.

The aim of the flight was to investigate solar neutrons. These studies included measurements of the neutron albedo of the earth and detection of neutrons from solar flares. Measurements of the earth's albedo neutron flux, studies of models for neutron production in the atmosphere, and measurements of high energy atmospheric neutrons also form a part of the program.

A total of four flights were performed between 1963 and 1964 at Holloman Air Force Base in New Mexico.

In the image at left we can see the instrument flown during pre-flight preparations. A similar detector has been flown on a NASA Orbiting Solar Observatory, OSO-G in 1969

Details of the balloon flight

Balloon launched on: 8/6/1963
Launch site: Holloman Air Force Base, Alamogordo, New Mexico, US  
Balloon launched by: Air Force Cambridge Research Laboratories (AFCRL)
Balloon manufacturer/size/composition: Zero Pressure Balloon 4.850.000 cuft (0.75 mil)
End of flight (L for landing time, W for last contact, otherwise termination time): 8/6/1963
Balloon flight duration (F: time at float only, otherwise total flight time in d:days / h:hours or m:minutes - ): 8 h
Payload weight: 519 pds

External references

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