Accession Number : AD0287428

Title :   THE DESIGN, DEVELOPMENT AND TESTING OF AN EXTREMELY SENSITIVE ACCELEROMETER

Corporate Author : CASE INST OF TECH CLEVELAND OHIO

Personal Author(s) : BAKER,WILLIAM R. JR. ; CLUTZ,DAVID A.

Report Date : MAY 1962

Pagination or Media Count : 1

Abstract : The design of a novel force balance accelerometer using electrocapillary surface force on a mercury drop, capable of giving a linear voltage output for accelerations from 1 G to 0.00001 G with sensitivity of 0.00001 G, is discussed. The feasibility of the design is shown and test results for the device are given. The electrocapillary device uses a Hg drop s the seismic mass and an elecrocapillary phenomenon as a null balance force. Electrocapillarity as applied in this work is the change in surface tension (in this case on a Hg drop electrolyte interface) as the electric field in the electrolyte containing the Hg is varied. The changes in surface tension over the Hg rop produce a surface flow which couples with the electrolyte to give a surface force which can propel the drop through the electrolyte. Theoretically, this force is a function of the electric field intensity seen by the drop, and the voltage which produces this field can balance a given acceleration. This voltage is then a measure of the acceleration. (Author)

Descriptors :   *PARTICLE ACCELERATORS, ACCELERATION, CAPILLARY TUBES, DESIGN, ELECTRIC FIELDS, ELECTRIC POTENTIAL, ELECTROLYTES, FEASIBILITY STUDIES, MEASUREMENT, MERCURY, SURFACE PROPERTIES

Distribution Statement : APPROVED FOR PUBLIC RELEASE