NASA NTRS · 19890000519
Mechanical Device Traces Parabolas
Abstract
Mechanical device simplifies generation of parabolas of various focal lengths. Based on fundamental geometrical construction of parabola. Constancy of critical total distance enforced by maintaining cable in tension. Applications of device include design of paraboloidal antennas, approximating catenaries on drawings of powerlines or long-wire antennas, and general tracing of parabolas on drawings.
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Soper, Terry A.. 1989-10-01. Mechanical Device Traces Parabolas. https://ntrs.nasa.gov/citations/19890000519
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