Field Test To Determine The Static Forces On The Pendulum Swing Balloon Logging System
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Field Test to Determine the Static Forces on the Pendulum Swing Balloon Logging System
This paper represents preliminary engineering analysis on the pendulum swing balloon system. It also describes an analysis of measurements taken in the summer o.f 1982, during a field test of a 37,000-foot3 balloon used as a prototype model under static conditions. This work established the influence of important variables on the load lifting capabilities, the line tensions, and the balloon movement. Balloon movement does not appear to be a major problem, for practical operating conditions it may be considered to be fixed in position. Line tensions were shown to conform with mathematical model predictions. The payload that the system can support at any given load position is a function of four variables: lift at the base of the balloon, the haulback line angle, the pendulum line angle, and the opposing guyline(s). Figures are used to quantitatively show the relationships. Although the paper is based on simplified mathematical models, static conditions, and a field test that wasn't an exact scale model, the results established an important understanding of the engineering fundamentals of this system.