The impact of an inertial guidance system's capability to field calibrate itself stresses the need for instrument testing to demonstrate the instru¬ment's adaptability to positional testing relative to earth's gravity. Corollary tests must prove that instrument coefficients so obtained describe instrument performance over the full extent of variables during operational usage. These tests are called Instrument Design Verification Tests;Test concepts, equipment, and probable physical test limits are presented for single-degree-of-freedom instruments.
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