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Meeting	ACGS Committee Meeting 129 - Colorado Springs, CO - October 2022
Agenda Location	4 GENERAL COMMITTEE TECHNICAL SESSION 4.2 Systems Technology Inc.
Title	Systems Technology Inc.
Presenter	Dave Klyde
Available Downloads*	presentation
	Downloads are available to members who are logged in and either Active* or attended this meeting.
Abstract	From the Wright Flyer to fly-by-wire, the phenomenon of pilot-induced oscillations (PIO) has persisted, evolving with the complexity of the airframes and their associated flight control systems. Though airframe designers have long recognized the threat posed by PIO, each generation has been forced to address the issue whether identified in developmental flight test, operational flight test, or mission operations. A desired outcome of the research presented in the compendium highlighted below is that these occurrences may be minimized in the second century of powered flight through enhanced comprehension and mitigation methods. To begin, it is recognized that the most significant threat of PIO in fly-by-wire aircraft comes from pilot interactions with a nonlinear flight control system response characterized by control surface actuator rate limiting, the so-called Category II PIO. A compendium of work carried out over three decades is separated into three distinct parts that address Comprehension and Analysis Methods, Category II PIO Mitigation Methods, and PIO Detection.