Theory of Ground Vibrations of a Two-blade Helicopter Rotor on Anisotropic Flexible Supports PDF Download
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Author: Robert P. Coleman
Publisher:
ISBN:
Category : Rotors (Helicopters)
Languages : en
Pages : 50
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Book Description
An extension of previous work on the theory of self-excited mechanical oscillations of hinged rotor blades has been made. Previously published papers cover the cases of three or more rotor blades on elastic supports (such as landing gear) having either equal or unequal support stiffness in different directions and the case of one or two blade rotors on supports having equal stiffness in all horizontal directions. The missing case of one or two blades on unequal supports has been treated.
Author: Robert P. Coleman
Publisher:
ISBN:
Category : Rotors (Helicopters)
Languages : en
Pages : 50
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Book Description
An extension of previous work on the theory of self-excited mechanical oscillations of hinged rotor blades has been made. Previously published papers cover the cases of three or more rotor blades on elastic supports (such as landing gear) having either equal or unequal support stiffness in different directions and the case of one or two blade rotors on supports having equal stiffness in all horizontal directions. The missing case of one or two blades on unequal supports has been treated.
Author: Robert A. Wagner
Publisher:
ISBN:
Category : Rotors (Helicopters)
Languages : en
Pages : 94
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Book Description
Author: Charles L. Shuford
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 178
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Book Description
Author: United States. National Advisory Committee for Aeronautics
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 1208
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Book Description
Author: United States. National Advisory Committee for Aeronautics
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 62
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Book Description
Author: United States. National Advisory Committee for Aeronautics
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 616
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Book Description
Author: Wayne Johnson
Publisher: Cambridge University Press
ISBN: 1107028078
Category : Mathematics
Languages : en
Pages : 949
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Book Description
A rotorcraft is a class of aircraft that uses large-diameter rotating wings to accomplish efficient vertical take-off and landing. The class encompasses helicopters of numerous configurations (single main rotor and tail rotor, tandem rotors, coaxial rotors), tilting proprotor aircraft, compound helicopters, and many other innovative configuration concepts. Aeromechanics covers much of what the rotorcraft engineer needs: performance, loads, vibration, stability, flight dynamics, and noise. These topics include many of the key performance attributes and the often-encountered problems in rotorcraft designs. This comprehensive book presents, in depth, what engineers need to know about modelling rotorcraft aeromechanics. The focus is on analysis, and calculated results are presented to illustrate analysis characteristics and rotor behaviour. The first third of the book is an introduction to rotorcraft aerodynamics, blade motion, and performance. The remainder of the book covers advanced topics in rotary wing aerodynamics and dynamics.
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 1180
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Book Description
Author: Warren J. Whitney
Publisher:
ISBN:
Category : Aerofoils
Languages : en
Pages : 716
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Book Description
Mass-flow tables for ratios of specific heats of 1.3 and 1.4 are presented for the entire range of critical velocity ratio. The tables enable a quick and accurate determination of the integrated average specific mass flow across a region where the end-point velocities are known, commensurate with the assumptions that the total state is constant and the static pressure varies linearly between the two velocities. A numerical example is included to illustrate the use of the tables. All quantities are in nondimensional form and are tabulated sgainst critical velocity ratio. The tables include specific-mass-flow parameter and ratio of static to total pressure.
Author:
Publisher:
ISBN:
Category : Mechanics, Applied
Languages : en
Pages : 770
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Book Description
