NDLI: Engine yaw augmentation for hybrid-wing-body aircraft via optimal control allocation techniques (Document No: 20110016022)

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Engine yaw augmentation for hybrid-wing-body aircraft via optimal control allocation techniques (Document No: 20110016022)

Content Provider	NASA Technical Reports Server (NTRS)
Author	Yoo, Seung Yeun Taylor, Brian R.
Copyright Year	2011
Description	Asymmetric engine thrust was implemented in a hybrid-wing-body non-linear simulation to reduce the amount of aerodynamic surface deflection required for yaw stability and control. Hybrid-wing-body aircraft are especially susceptible to yaw surface deflection due to their decreased bare airframe yaw stability resulting from the lack of a large vertical tail aft of the center of gravity. Reduced surface deflection, especially for trim during cruise flight, could reduce the fuel consumption of future aircraft. Designed as an add-on, optimal control allocation techniques were used to create a control law that tracks total thrust and yaw moment commands with an emphasis on not degrading the baseline system. Implementation of engine yaw augmentation is shown and feasibility is demonstrated in simulation with a potential drag reduction of 2 to 4 percent. Future flight tests are planned to demonstrate feasibility in a flight environment.
File Size	3066443
Page Count	33
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_20110016022
Archival Resource Key	ark:/13960/t79s6rc74
Language	English
Publisher Date	2011-08-08
Access Restriction	Open
Subject Keyword	Aircraft Stability And Control Tail Assemblies Stability Deflection Control Systems Design Aerodynamics Fuel Consumption Yaw Degradation Wings Drag Reduction Simulation Airframes Stabilizers Fluid Dynamics Optimal Control Center of Gravity Nonlinearity Feasibility Thrust Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Article

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