Limited Investigation of the Effects of Elevator Rate Limiting and Stick Dynamicson Longitudinal Pilot Induced Oscillations (HAVE GRIP)

摘要

This report presents the results of the HAVE GRIP flight test program. Thisprogram performed a limited investigation of the effects of stick dynamics and elevator rate limiting on longitudinal pilot induced oscillations (PIOs) and was performed as a Test Management Project as part of the Test Pilot School curriculum. The first phase of this program investigated how elevator rate limiting affected the susceptibility to PIOs during offset landing tasks. The second phase investigated how variations in stick spring constant and natural frequency affected the PIO susceptibility of the system at a given elevator rate limit. The third phase investigated the combined effects of changing elevator rate limits with variations in stick spring constant and natural frequency.