Accession Number:

AD0658146

Title:

SUMMARY OF ANALYSIS OF EFFECT OF GIMBAL COMPLIANCE ON OPERATION OF A RATE GYROSCOPE,

Descriptive Note:

Corporate Author:

JOHNS HOPKINS UNIV SILVER SPRING MD APPLIED PHYSICS LAB

Personal Author(s):

Report Date:

1954-07-16

Pagination or Media Count:

11.0

Abstract:

Experience with rate gyros has shown a consistent change decrease in the resonant frequency, and increase in the damping of the gyro about its output axis when the gyro wheel was turned on. An intuitive explanation for this effect was that compliance in the gyro gimbals and mounting allowed energy to be taken from the moving output gimbal since as the output gimbal moves, there is a torque about the gyro input axis proportional to the gyro wheel angular momentum and the angular velocity of the output gimbal. Gyros having large angular momentums and high resonant frequencies are consequently the gyros in which this might be a problem. This memorandum documents briefly the results of MADDIDA studies to explain the reason for the change in resonant frequency secondly, to show experimental verification of the equations derived by this analysis. No conclusions are drawn since it is self-evident that if the gyro transfer characteristics are to be known over an extended range of frequencies, this should indicate the need for a good deal of information about the gyros characteristics. Author

Subject Categories:

  • Machinery and Tools

Distribution Statement:

APPROVED FOR PUBLIC RELEASE