NASA NTRS · 19640000080
Apparatus measures very small thrusts
Abstract
Measurement of very small thrusts of an ion engine are made by mounting the engine on a platform supported by leaf springs which are loaded to have a zero spring constant. Measuring apparatus includes an inductive sensor, servo amplifier, and a counterthrust feedback system.
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1964-11-01. Apparatus measures very small thrusts. https://ntrs.nasa.gov/citations/19640000080
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