Accession Number : AD0357823

Title :   THE ARMA G-16 FLEX PIVOT GYRO PHASE II

Descriptive Note : Final technical rept.,

Corporate Author : AMERICAN BOSCH ARMA CORP GARDEN CITY NY

Personal Author(s) : Silvia, E. R.

Report Date : 05 FEB 1965

Pagination or Media Count : 1

Abstract : An investigation was initiated to determine the characteristics of a rotor supported on a spin motor shaft by a universal joint employing torsion spring pivots in place of conventional bearings. An experimental gyro model was constructed and tests on it revealed an interesting anti-resonant effect. At one value of spin speed, dynamic forces in the gimbal of the universal joint exactly cancelled the pivot spring forces, thus freeing the rotor of all spring restraint. Further tests and analytic studies indicated that this unique rotor suspension provided the basis for an inexpensive, highly accurate, free-rotor gyroscope. One experimental two-axis gyro model was built and two feasibility models were designed, built and partially evaluated. Test results on the three models are extremely encouraging and demonstrate an inherent performance capability in the 0.01 degree/hr to 0.02 degree/hr random drift class with prospects for excellent long term stability. Operative vibration tests were performed satisfactorily, and the anisoelastic drift factor remained constant up to 35g, the maximum level tested. These gyros were designed to operate at levels up to 100g. Spin axis vertical tests verified that the spinning suspension of the flex pivot gyro averages out fixed drift and radial unbalance. Total drift levels below 0.1 degree/hr. were observed. (Author)

Descriptors :   *GYROSCOPES, FEASIBILITY STUDIES, GIMBALS, UNIVERSAL JOINTS, ROTATION, SPINNING(MOTION), FORCE(MECHANICS), RESONANCE, PERFORMANCE(ENGINEERING), STABILITY, ERRORS, DRIFT, TORQUE.

Subject Categories : Navigation and Guidance

Distribution Statement : APPROVED FOR PUBLIC RELEASE