Ground and flight tests were conducted to investigate the problems associated with using a strapdown inertial flight data system. The objectives of this investigation were to develop a three axis inertial attitude reference system, to evaluate a self-alignment technique, and to examine the problem of time-sharing a general purpose computer for the several tasks required of it. The performance of the strapdown platforrm/computer system that was developed was sufficiently accurate for the tasks attempted. For flights on the order of 45 minutes duration, attitude angle errors of + or -.035 radian (+ or -2 deg) in all axes were observed. Laboratory tests of the self-alignment technique gave accuracies of + or -.00075 radian in pitch and roll axes and + or -0.0045 radian in the yaw axis. Self-alignment flight results were inconsistent, since a stable solution was not obtained on windy days because of aircraft rocking motions. (Author)
Ground and Flight Experience with a Strapdown Inertial Measuring Unit and a General Purpose Airborne Digital Computer
1973
34 pages
Report
No indication
English
Single axis reference strapdown inertial measuring unit
NTRS | 1971
|Single Axis Reference Strapdown Inertial Measuring Unit
NTIS | 1971
|