Accession Number : AD0285502

Title :   REPORT ON TEST METHODS FOR THE SINGLE DEGREE OF FREEDOM INTEGRATING RATE GYRO. PHASE III. TIME VARIANT DRIFT CHARACTERISTICS

Corporate Author : NAVAL AIR DEVELOPMENT CENTER JOHNSVILLE PA AERONAUTICAL INSTRUMENTS LAB

Personal Author(s) : VAUGHAN,RONALD S.

Report Date : 01 MAY 1962

Pagination or Media Count : 1

Abstract : Several methods of characterizing time variant drifts were studied. The advantages of specifying short term and long term (day-to-day) measures are discussed, such as the auto-correlation function. Laboratory studies of the various methods of measuring drift indicate that the method of using the earth as a turntable has many advantages. A servo controlled stand is also equired, particularly for gyros with very high mechanical gain, but is not as versatileA TEST INSTRUMENT. Definitions of warm-up time are proposed which seem less arbitrary than those used by many sources. It is concluded that due to the various test methods in existence, and often due to the methods of analysis of test results, comparison of characteristics of gyros is difficult unless methods of test are specified. The methods contained in this report are applicable to single degree of freedom integrating rate gyros where testing is desired after completion of the finished unit. It is recommended that consideration be given to the acceptance of the methods described in this report as an approach to standardization of methods for determining the performance characteristics of single degree of freedom integrating rate gyros. (Author)

Descriptors :   *GYROSCOPES, ANALYSIS, DRIFT, FEEDBACK, MEASUREMENT, SERVOMECHANISMS, TEST METHODS, TORQUE

Distribution Statement : APPROVED FOR PUBLIC RELEASE