Author: Kenneth W. IliffPublisher:
ISBN:
Category : Grumman X-29A (Research plane)
Languages : en
Pages : 44
Book Description
X-29A Lateral-Directional Stability and Control Derivatives Extracted From High-Angle-of-Attack Flight Data
Author: Kenneth W. IliffPublisher:
ISBN:
Category : Grumman X-29A (Research plane)
Languages : en
Pages : 44
Book Description
X-29a Lateral-Directional Stability and Control Derivatives Extracted from High-Angle-Of-Attack Flight Data
Author: National Aeronautics and Space Administration (NASA)Publisher: Createspace Independent Publishing Platform
ISBN: 9781722944742
Category :
Languages : en
Pages : 42
Book Description
The lateral-directional stability and control derivatives of the X-29A number 2 are extracted from flight data over an angle-of-attack range of 4 degrees to 53 degrees using a parameter identification algorithm. The algorithm uses the linearized aircraft equations of motion and a maximum likelihood estimator in the presence of state and measurement noise. State noise is used to model the uncommanded forcing function caused by unsteady aerodynamics over the aircraft at angles of attack above 15 degrees. The results supported the flight-envelope-expansion phase of the X-29A number 2 by helping to update the aerodynamic mathematical model, to improve the real-time simulator, and to revise flight control system laws. Effects of the aircraft high gain flight control system on maneuver quality and the estimated derivatives are also discussed. The derivatives are plotted as functions of angle of attack and compared with the predicted aerodynamic database. Agreement between predicted and flight values is quite good for some derivatives such as the lateral force due to sideslip, the lateral force due to rudder deflection, and the rolling moment due to roll rate. The results also show significant differences in several important derivatives such as the rolling moment due to sideslip, the yawing moment due to sideslip, the yawing moment due to aileron deflection, and the yawing moment due to rudder deflection. Iliff, Kenneth W. and Wang, Kon-Sheng Charles Wang Armstrong Flight Research Center RTOP 505-68-50...
NASA's Contributions to Aeronautics, Volume 2, Flight Environment ..., NASA/SP-2010-570-Vol 2, 2010, *
Author: NASA's Contributions to Aeronautics: Flight environment, operations, flight testing, and research
Author: Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 1064
Book Description
Two-volume collection of case studies on aspects of NACA-NASA research by noted engineers, airmen, historians, museum curators, journalists, and independent scholars. Explores various aspects of how NACA-NASA research took aeronautics from the subsonic to the hypersonic era.-publisher description.
Flight Dynamics
Author: Robert F. StengelPublisher: Princeton University Press
ISBN: 1400866812
Category : Science
Languages : en
Pages : 864
Book Description
Flight Dynamics takes a new approach to the science and mathematics of aircraft flight, unifying principles of aeronautics with contemporary systems analysis. While presenting traditional material that is critical to understanding aircraft motions, it does so in the context of modern computational tools and multivariable methods. Robert Stengel devotes particular attention to models and techniques that are appropriate for analysis, simulation, evaluation of flying qualities, and control system design. He establishes bridges to classical analysis and results, and explores new territory that was treated only inferentially in earlier books. This book combines a highly accessible style of presentation with contents that will appeal to graduate students and to professionals already familiar with basic flight dynamics. Dynamic analysis has changed dramatically in recent decades, with the introduction of powerful personal computers and scientific programming languages. Analysis programs have become so pervasive that it can be assumed that all students and practicing engineers working on aircraft flight dynamics have access to them. Therefore, this book presents the principles, derivations, and equations of flight dynamics with frequent reference to MATLAB functions and examples. By using common notation and not assuming a strong background in aeronautics, Flight Dynamics will engage a wide variety of readers. Introductions to aerodynamics, propulsion, structures, flying qualities, flight control, and the atmospheric and gravitational environment accompany the development of the aircraft's dynamic equations.
Flight Test of the X-29A at High Angle of Attack: Flight Dynamics and Controls
Author: Jeffrey E. BauerPublisher:
ISBN:
Category : Digital control systems
Languages : en
Pages : 74
Book Description
NASA Technical Memorandum
Author: Monthly Catalog of United States Government Publications
Author: Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 148
Book Description
Lateral Stability Analysis for X-29A Drop Model Using System Identification Methodology
Author: David L. RaneyPublisher:
ISBN:
Category : Grumman X-29A (Jet plane)
Languages : en
Pages : 32
Book Description
Author: