Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 66
Book Description
In-flight Lift-drag Characteristics for a Forward-swept Wing Aircraft and Comparisons with Contemporary Aircraft)
Author: In-flight Lift-drag Characteristics for a Forward-swept Wing Aircraft (and Comparisions with Contemporary Aircraft)
Author: Edwin J. SaltzmanFlight Investigation of the Lift and Drag Characteristics of a Swept-wing, Multijet, Transport-type Airplane
Author: Ronald TamborPublisher:
ISBN:
Category : Mach number
Languages : en
Pages : 32
Book Description
Aerodynamic Assessment of Flight-Determined Subsonic Lift and Drag Characteristics of Seven Lifting-Body and Wing-Body Reentry Vehicle Configurations
Author: Edwin J. SaltzmanPublisher:
ISBN:
Category : Drag (Aerodynamics)
Languages : en
Pages : 162
Book Description
Preliminary Flight-Determined Subsonic Lift and Drag Characteristics of the X-29a Forward-Swept-Wing Airplane
Author: National Aeronautics and Space Administration (NASA)Publisher: Createspace Independent Publishing Platform
ISBN: 9781722499822
Category :
Languages : en
Pages : 48
Book Description
The X-29A subsonic lift and drag characteristics determined, met, or exceeded predictions, particularly with respect to the drag polar shapes. Induced drag levels were as great as 20 percent less than wind tunnel estimates, particularly at coefficients of lift above 0.8. Drag polar shape comparisons with other modern fighter aircraft showed the X-29A to have a better overall aircraft aerodynamic Oswald efficiency factor for the same aspect ratio. Two significant problems arose in the data reduction and analysis process. These included uncertainties in angle of attack upwash calibration and effects of maneuver dynamics on drag levels. The latter problem resulted from significantly improper control surface automatic camber control scheduling. Supersonic drag polar results were not obtained during this phase because of a lack of engine instrumentation to measure afterburner fuel flow. Hicks, John W. and Huckabine, Thomas Armstrong Flight Research Center RTOP 533-02-51...
Scientific and Technical Aerospace Reports
Author: STAR
Author: Preliminary Flight-Determined Subsonic Lift and Drag Characteristics of the X-29a Forward-Swept-Wing Airplane
Author: National Aeronautics and Space Adm NasaPublisher: Independently Published
ISBN: 9781729234532
Category :
Languages : en
Pages : 50
Book Description
The X-29A subsonic lift and drag characteristics determined, met, or exceeded predictions, particularly with respect to the drag polar shapes. Induced drag levels were as great as 20 percent less than wind tunnel estimates, particularly at coefficients of lift above 0.8. Drag polar shape comparisons with other modern fighter aircraft showed the X-29A to have a better overall aircraft aerodynamic Oswald efficiency factor for the same aspect ratio. Two significant problems arose in the data reduction and analysis process. These included uncertainties in angle of attack upwash calibration and effects of maneuver dynamics on drag levels. The latter problem resulted from significantly improper control surface automatic camber control scheduling. Supersonic drag polar results were not obtained during this phase because of a lack of engine instrumentation to measure afterburner fuel flow. Hicks, John W. and Huckabine, Thomas Armstrong Flight Research Center RTOP 533-02-51...
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.
Comparison of Full-scale Lift and Drag Characteristics of the X-15 Airplane with Wind-tunnel Results and Theory
Author: Edward J. HopkinsPublisher:
ISBN:
Category : Drag (Aerodynamics)
Languages : en
Pages : 22
Book Description