SOME PERFORMANCE DETAILS OF A PROTOTYPE TUNING FORK GYROSCOPE, SERIAL NO. K.H.1

A test schedule has been designed and it is shown that the information available after carrying out this schedule should be sufficient to enable a performance assessment to be made of any tuning-fork gyroscope. Comparisons between open loop and closed loop behavior are made and an over-all value for the tuning-forks reliability as a rate-of-turn indicator is derived. A modification to the instrument design which should result in an improved performance is suggested. Long-term stability and the effects of temperature changes are measured. An unusually large number of test records are included in this note as a basis for future reference.