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Meeting	ACGS Committee Meeting 100 - Cocoa Beach - October 2007
Agenda Location	8 SUBCOMMITTEE B – MISSILES AND SPACE 8.2 RLV Control Allocation for Atmospheric Flight
Title	RLV Control Allocation for Atmospheric Flight
Presenter	Dave Doman
Affiliation	Air Force Research Labs
Available Downloads*	presentation
	Downloads are available to members who are logged in and either Active* or attended this meeting.
Abstract	Control allocation is a term that is used to describe methods that mix or blend control effectors in order to achieve a desired force, moment or acceleration vector subject to actuator limitations. It will be shown that control allocation has a pervasive role in fault-tolerant autonomous guidance, control and trajectory generation in spite of the fact that most methods were intended only to simplify the blending of control effectors for inner-loop flight control. The focus of the presentation will be on describing recent developments in the area of control allocation. Methods of blending control effectors that possess nonlinear moment-deflective relationships will be described. A method for blending pulsed jet effectors with continuous effectors (e.g., RCS jets with aerodynamic control surfaces) will be discussed as well. A technique will also be presented for blending effectors in cases where interactions between components in a control effector suite exist (e.g., rocket nozzle gimbal commands blended with differential throttle settings). In addition, a method will be presented that allows one to blend high bandwidth effectors with low bandwidth effectors, (e.g., blending throttles with aerodynamic surfaces).