DYNAMIC GAS FILM ACCELEROMETER STUDY. PART I: DEVELOPMENT AND TEST ROGRAM.
Technical rept. Mar-Sep 64.
LEAR SIEGLER INC GRAND RAPIDS MI INSTRUMENT DIV
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The primary objective of the program was to determine the feasibility of applying the dynamic film suspension as a means of supporting the proof mass of a linear accelerometer. Feasibility was demonstrated through the development of a mathematical model of the suspension and the design, fabrication, and test of a research test model. A research model accelerometer was fabricated and tested. Satisfactory test results were obtained in the following areas capacitance pickoff sensitivity, linearity, and reaction forces permanent magnet forcer scale factor and linearity force rebalance electronic gains and stability margins dynamic film journal load support dynamic film bearing power consumption accelerometer test bed 1 g tumble tests in which bias, scale factor, g-squared non-linearity, g-cubed non-linearity, cross-axis sensitivity and cross coupling were extracted by Fourier analysis bias dependence upon synamic film and capacitance pickoff excitation variation in bias as a function of servo hang-off. Author