This report presents the results of the final evaluation testing of the DESI (digital end-speed indicator) system on the TC13 Mod 0 and TC13 Mod 1 catapults at the Naval Air Test Facility, Lakehurst, New Jersey, and includes an analysis of the test procedures, problem areas, and reliability of the DESI system. It has been determined that the DESI system is satisfactory for use on the CVAN68 and for retrofit ...
An analytical study was made of a triaxial system of pendulum type velocity gages. These gages are to be arranged in a canister and placed in an earth medium to record field particle velocities resulting from an explosion. The purpose of this study was (1) to determine the effects of cross-axis sensitivity of the gages, (2) to estimate the errors associated with linearizing the governing equations when finite pendulum angles ...
The output of the bar-magnet velocity meter, used to measure ship and model structural velocity transients due to the shock of an underwater explosion, is distorted by the electrical and structural characteristics of the meter. This report contains a derivation and analysis of the velocity-meter transfer function by treating the meter distributed mechanical system with Laplace transform techaniques. The output signal distortion due to the high frequency structural resonances of ...
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