CONTROL SYSTEMS DEVELOPMENT DIVISION INTERNAL NOTE 74-EG-18 PROJECT SPACE SHUTTLE GYROFLEX DATA TRANSMITTAL AND DATA ACQUISITION SYSTEM ANALYSIS

摘要

Data obtained from the evaluation of GYROFLEX gyro, serial number 4778, is presented herein, along with a description of the data acquisition system. In addition, the appendices con¬tain an analysis of the voltmeter used for data collection, and the filtering technique employed.nIt is shown that the test setup is satisfactory for test¬ing GYROFLEX gyros.nIt is also shown that repeatable data can be obtained, using a digital filter and a one-second voltmeter integration time, which greatly reduces the amount of time required to perform any given test.nThere were two problem areas associated with the test setup. Both involved the test table. One is a random error in the table position servo. At times the table goes to the wrong table angle. Data at these positions is rejected. There is also a random error of ±0.5 degrees in the tilt axis setting. The tilt axis readout has been corrected and drift terms effected by this error source are not included in this report. Specifically the DXS and DYS terms in tables 1, 2, and 3 and several CRSX and CRSY terms in table 3.