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Meeting	ACGS Committee Meeting 93 - Colorado Springs - March 2004
Agenda Location	9 SUBCOMMITTEE E – FLIGHT AND PROPULSION CONTROL SYSTEMS 9.2 The State of the Art and Remaining Challenges in Electric Actuation for Flight and Propulsion Control
Title	The State of the Art and Remaining Challenges in Electric Actuation for Flight and Propulsion Control
Presenter	Bill Schley
Affiliation	Parker Aerospace
Available Downloads*	presentation
	Downloads are available to members who are logged in and either Active* or attended this meeting.
Abstract	This presentation begins with a historical overview of Parker Aerospace contributions in electric actuation technology. Development programs involving safety-critical applications of EMA and EHA are covered including J/IST, Joint Strike Fighter (JSF), and others. The current industry state of the art is described, along with trends in still-evolving electric actuation requirements. As our industry takes the final steps toward pure electromechanical flight control, the remaining technical challenges are discussed: Fail-operative/fail-safe capability, tolerance to mechanical jams and opens, centering after failure, testability, thermal considerations, reliability, durability, and weight. The presentation concludes with recommendations of areas where risk reduction is still needed.