Soft Hub For Bearingless Rotors PDF Download
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Author | : National Aeronautics and Space Adm Nasa |
Publisher | : |
Total Pages | : 104 |
Release | : 2018-11-08 |
Genre | : |
ISBN | : 9781731031235 |
Download Soft Hub for Bearingless Rotors Book in PDF, ePub and Kindle
Soft hub concepts which allow the direct replacement of articulated rotor systems by bearingless types without any change in controllability or need for reinforcement to the drive shaft and/or transmission/fuselage attachments of the helicopter were studied. Two concepts were analyzed and confirmed for functional and structural feasibility against a design criteria and specifications established for this effort. Both systems are gimballed about a thrust carrying universal elastomeric bearing. One concept includes a set of composite flexures for drive torque transmittal from the shaft to the rotor, and another set (which is changeable) to impart hub tilting stiffness to the rotor system as required to meet the helicopter application. The second concept uses a composite bellows flexure to drive the rotor and to augment the hub stiffness provided by the elastomeric bearing. Each concept was assessed for weight, drag, ROM cost, and number of parts and compared with the production BO-105 hub. Dixon, Peter G. C. Unspecified Center BEARINGLESS ROTORS; COMPOSITE STRUCTURES; CONTROLLABILITY; DESIGN ANALYSIS; ELASTOMERS; SPECIFICATIONS; STRUCTURAL DESIGN; TILTING ROTORS; BELLOWS; BO-105 HELICOPTER; DRAG; FEASIBILITY ANALYSIS; FLEXING; SHAFTS (MACHINE ELEMENTS); STIFFNESS; TORQUE...
Author | : |
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Total Pages | : 106 |
Release | : 1991 |
Genre | : |
ISBN | : |
Download Soft Hub for Bearingless Rotors Book in PDF, ePub and Kindle
Author | : |
Publisher | : |
Total Pages | : 912 |
Release | : 1991 |
Genre | : Aeronautics |
ISBN | : |
Download Scientific and Technical Aerospace Reports Book in PDF, ePub and Kindle
Author | : Wayne Johnson |
Publisher | : Cambridge University Press |
Total Pages | : 949 |
Release | : 2013-04-29 |
Genre | : Mathematics |
ISBN | : 1107028078 |
Download Rotorcraft Aeromechanics Book in PDF, ePub and Kindle
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 | : |
Total Pages | : 518 |
Release | : 1985 |
Genre | : |
ISBN | : |
Download Rotorcraft Dynamics 1984 Book in PDF, ePub and Kindle
Author | : Michael J. McNulty |
Publisher | : |
Total Pages | : 396 |
Release | : 1988 |
Genre | : |
ISBN | : |
Download Integrated Technology Rotor Methodology Assessment Workshop Book in PDF, ePub and Kindle
Author | : |
Publisher | : |
Total Pages | : 950 |
Release | : 1994-12 |
Genre | : Government publications |
ISBN | : |
Download Monthly Catalogue, United States Public Documents Book in PDF, ePub and Kindle
Author | : |
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Total Pages | : |
Release | : 1994 |
Genre | : Government publications |
ISBN | : |
Download Monthly Catalog of United States Government Publications Book in PDF, ePub and Kindle
Author | : |
Publisher | : |
Total Pages | : 24 |
Release | : 1987 |
Genre | : Rotors (Helicopters) |
ISBN | : |
Download An Experimental Investigation of the Aeromechanical Stability of a Hingeless Rotor in Hover and Forward Flight Book in PDF, ePub and Kindle
Author | : Ernst Heinrich Hirschel |
Publisher | : Springer Science & Business Media |
Total Pages | : 746 |
Release | : 2004-02-12 |
Genre | : Mathematics |
ISBN | : 9783540406457 |
Download Aeronautical Research in Germany Book in PDF, ePub and Kindle
"This English-language edition of Aeronautical Research in Germany recounts and celebrates the considerable contributions made in Germany to the invention and ongoing development of aircraft. [snip] It covers in fascinating detail the milestones of the first 100 years of aeronautical research in Germany, within the broader context of the scientific, political, and industrial milieus."--Publisher description