A GUIDE FOR EVALUATING PRECISION GYROS FOR BALLISTIC MISSILE TYPE APPLICATIONS

Abstract : Production testing procedures are recommended for evaluation of precision gyros used to stabilize inertial platforms in a ballistic missile environment. It is recommended that tumbling tests be used for measurement of the drift coefficients (g-insensitive, g-sensitive, and g2sensitive drifts); that the long-term stability of the drift coefficients be measured on sample gyros selected from the production line and on gyros recycled from systems in the field; and that by means of three cogging tests, the shortterm repeatability of the drift coefficients be measured. 'Short-term' is defined for the purpose of this study as a period comparable to missile flight time. This study does not recommend usage of the 24-hour servo tests for applications of the ballistic missile type.