Analog-computer Investigation of Effects of Friction and Preload on the Dynamic Longitudinal Characteristics of a Pilot-airplane Combination

Analog-computer Investigation of Effects of Friction and Preload on the Dynamic Longitudinal Characteristics of a Pilot-airplane Combination
Author: Harold L. Crane
Publisher:
Total Pages: 1
Release: 1961
Genre:
ISBN:

With an analog computer, an investigation was made of the effects of stick pivot friction and servo valve friction on the longitudinal response of a fighter airplane. The results indicated that very small amounts of valve friction caused hunting oscillations of the piloted airplane when a small attitude correction was attempted. It was found that partial compensation for the effects of valve friction resulted from the presence of either stick friction or preloaded centering of the servo valve or the stick. (Author).