d obviously not be used for anything except short periods. The instrument is of value, however, for obtaining the period and amplitude of small high frequency vibrations. The National Advisory Committee for Aeronautics' accelerometer consists of a fiat canti- lever spring, the deflection of whose… … DEFLECTIONS AND NATURAL PERIODS OF SPRINGS* It is obvious that for an accelerometer the greatest deflection with the highest natural period is desired. Unfortunately the deflection and period of a uniformally loaded flat spring under static load, are connected by the formula: D = ET2 where P =…
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