Supplementary Charts for Estimating Performance of High-performance Helicopters PDF Download
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Author: Robert J. Tapscott Publisher: ISBN: Category : Charts, diagrams, etc Languages : en Pages : 31
Book Description
Charts published in NACA TN 3323 for estimating the performance of high-performance helicopters were applicable to rotors having hinged rectangular blades with a linear twist of -8 degrees. Supplementary charts are presented herein covering twists of 0 degrees and -16 degrees.
Author: Robert J. Tapscott Publisher: ISBN: Category : Charts, diagrams, etc Languages : en Pages : 31
Book Description
Charts published in NACA TN 3323 for estimating the performance of high-performance helicopters were applicable to rotors having hinged rectangular blades with a linear twist of -8 degrees. Supplementary charts are presented herein covering twists of 0 degrees and -16 degrees.
Author: Robert J. Tapscott Publisher: ISBN: Category : Charts, diagrams, etc Languages : en Pages : 692
Book Description
Theoretically derived charts showing steady-state and first- and second-harmonic flapping coefficients are presented for helicopter rotors having hinged rectangular blades with a linear twist of 0, -8, and -16 degrees. The charts, showing the rotor flapping coefficients for combinations of inflow ratio and blade pitch angle, are presented for tip-speed ratios ranging from 0.05 to 0.50.
Author: Alfred Gessow Publisher: ISBN: Category : Aeronautics Languages : en Pages : 33
Book Description
The charts may be used to study the effects of design changes on rotor performance and to indicate optimum performance conditions, as well as to estimate quickly rotor performance in forward flight. They are also useful in obtaining inflow-ratio and pitch-angle values for use in calculating flapping coefficients and spanwise loadings. The method of applying the charts t o performance estimation is illustrated through sample calculation of a typical rotor-performance problem.
Author: Edward Seckel Publisher: Academic Press ISBN: 148322015X Category : Technology & Engineering Languages : en Pages : 523
Book Description
Stability and Control of Airplanes and Helicopters deals with aircraft flying qualities that determine the stability and control of airplanes and helicopters. It includes problems based on real aircraft, selected to represent the gamut from simple to complicated, and from conventional utility designs to futuristic research types. Many of these problems involve comparison of theory and experiment to demonstrate their mutual relationship. Comprised of 25 chapters, this book begins with a discussion on the aerodynamics of the component parts related to the lift and moment characteristics of an airplane, including wings and associated accessories; bodies such as fuselages, nacelles, and tip tanks; and control surfaces. The reader is then introduced to some mathematical techniques for linear differential equations; steady flight at different speeds; and stick force and control-free stability. Subsequent chapters focus on flaps and high-lift devices; power and compressibility effects; and the manner in which the aircraft responds to the application of control. Aeroelasticity and longitudinal equations of motion are also examined. This monograph is intended for undergraduate and graduate students taking modern engineering courses.
Author: Robert J. Tapscott
Author: Robert J. Tapscott
Author: Robert J. Tapscott
Author: Robert J. Tapscott
Author: Watson H. Tanner
Author: United States. National Advisory Committee for Aeronautics
Author: United States. National Advisory Committee for Aeronautics
Author: Alfred Gessow
Author: Edward Seckel
Author: United States. National Advisory Committee for Aeronautics
Author: