Aerospace Control and Guidance Systems Committee

Announcements

You must first log in to access prior meeting presentations, register for a meeting, or nominate some for the Ward Award.

If you do not have a login account, or cannot remember the email address associated with your account, please click on the Application Form link below.

Login

Site Search

Search our site:

Upcoming Events

Photos

Meeting Highlights New!

Subcommittee S

Prior Meetings

Abstracts may be viewed by anyone. Presentations are only available to active members who have logged in.

Meeting 132
(coming soon)

Home

Ward Memorial Award

Planning Advisory Board

Downloads

Constitution and By-Laws

About

History

Contact Us

← Return to agenda

Meeting	ACGS Committee Meeting 112 - Annapolis, Maryland - October 2013
Agenda Location	10 SUBCOMMITTEE A – AERONAUTIC AND SURFACE VEHICLES 10.2 Flight Test Evaluation of the Safe-Cue System for Loss of Control Mitigation
Title	Flight Test Evaluation of the Safe-Cue System for Loss of Control Mitigation
Presenter	Dave Klyde
Affiliation	STI
Available Downloads*	presentation
	Downloads are available to members who are logged in and either Active* or attended this meeting.
Abstract	David H. Klyde Amanda K. Lampton, Ph.D. Systems Technology, Inc., Hawthorne, CA, 90250 Nathan Richards Barron Associates, Inc., Charlottesville, VA, 22901 Bruce Cogan NASA Dryden Flight Research Center, Edwards, CA, 93523 For more than a decade, researchers have been developing novel adaptive flight control systems that provide a means to safely operate an air vehicle in the presence of damage or failures. While these systems show great promise, integration of exemplar systems in flight test aircraft at NASA have revealed the potential for unfavorable pilot-vehicle coupling including pilot-induced oscillations. To address this issue directly, the Smart Adaptive Flight Effective Cue or SAFE-Cue system has been developed. The SAFE-Cue system features an adaptive command path gain to mitigate the oscillation tendencies and an inceptor force feedback cue to alert the pilot that the system is active. To evaluate the system, a representative adaptive controller that had been successfully evaluated in previous flight test programs and the SAFE-Cue system were implemented in a Calspan Learjet In-Flight Simulator. Three test pilots conducted two sorties each to evaluate the effectiveness of the combined system in the presence of pitch and roll axis failures. The resulting pilot opinion ratings and quantitative assessments of performance indicated that not only does the SAFE-Cue system successfully eliminate the oscillation tendencies that can lead to loss of control, but it also restores a more linear vehicle response that allows the pilot to successfully complete the evaluation task with performance that approaches that of the baseline healthy aircraft. While the SAFE-Cue system was integrated with an adaptive controller in this application, the system is completely general and can be applied to any fly-by-wire design.