Helicopter Acoustics
Author :
Publisher :
Page : 416 pages
File Size : 32,94 MB
Release : 1978
Category : Acoustical engineering
ISBN :
Author :
Publisher :
Page : 416 pages
File Size : 32,94 MB
Release : 1978
Category : Acoustical engineering
ISBN :
Author : F. H. Schmitz
Publisher :
Page : 110 pages
File Size : 50,39 MB
Release : 1983
Category :
ISBN :
The theoretical and experimental status of helicopter impulsive noise is reviewed. The two major source mechanisms of helicopter impulsive noise are addressed: high-speed impulsive noise and blade-vortex interaction impulsive noise. A thorough physical explanation of both generating mechanisms is presented together with model and full-scale measurements of the phenomena. Current theoretical prediction methods are compared with experimental findings of isolated rotor tests. The noise generating mechanisms of high speed impulsive noise are fairly well understood - theory and experiment compare nicely over Mach number ranges typical of today's helicopters. For the case of blade-vortex interaction noise, understanding of noise generating mechanisms and theoretical comparison with experiment are less satisfactory. Several methods for improving theory-experiment are suggested.
Author : Gordon J. Leishman
Publisher : Cambridge University Press
Page : 860 pages
File Size : 34,18 MB
Release : 2006-04-24
Category : Science
ISBN : 9780521858601
Written by an internationally recognized teacher and researcher, this book provides a thorough, modern treatment of the aerodynamic principles of helicopters and other rotating-wing vertical lift aircraft such as tilt rotors and autogiros. The text begins with a unique technical history of helicopter flight, and then covers basic methods of rotor aerodynamic analysis, and related issues associated with the performance of the helicopter and its aerodynamic design. It goes on to cover more advanced topics in helicopter aerodynamics, including airfoil flows, unsteady aerodynamics, dynamic stall, and rotor wakes, and rotor-airframe aerodynamic interactions, with final chapters on autogiros and advanced methods of helicopter aerodynamic analysis. Extensively illustrated throughout, each chapter includes a set of homework problems. Advanced undergraduate and graduate students, practising engineers, and researchers will welcome this thoroughly revised and updated text on rotating-wing aerodynamics.
Author : Harvey H. Hubbard
Publisher :
Page : 616 pages
File Size : 37,19 MB
Release : 1991
Category : Aerodynamic noise
ISBN :
Author : Harvey H. Hubbard
Publisher :
Page : 452 pages
File Size : 14,35 MB
Release : 1991
Category : Aerodynamic noise
ISBN :
Author :
Publisher :
Page : 720 pages
File Size : 37,92 MB
Release : 1988
Category : Aeronautics
ISBN :
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Author :
Publisher :
Page : 350 pages
File Size : 19,1 MB
Release : 1995
Category :
ISBN :
Author : A. Krothapalli
Publisher : Springer Science & Business Media
Page : 511 pages
File Size : 27,98 MB
Release : 2012-12-06
Category : Science
ISBN : 146124840X
The Joint Institute for Aeronautics and Acoustics at Stanford University was established in October 1973 to provide an academic environment for long-term cooperative research between Stanford and NASA Ames Research Center. Since its establishment, the Institute has conducted theoretical and experimental work in the areas of aerodynamics, acoustics, fluid mechanics, flight dynamics, guidance and control, and human factors. This research has involved Stanford faculty, research associates, graduate students, and many distinguished visitors in collaborative efforts with the research staff of NASA Ames Research Center. The occasion of the Institute's tenth anniversary was used to reflect back on where that research has brought us, and to consider where our endeavors should be directed next. Thus, an International Symposium was held to review recent advances in the fields relevant to the activities of the Institute and to discuss the areas of research to be undertaken in the future. This anniversary was also chosen as an opportunity to honor one of the Institute's founders and its director, Professor Krishnamurty Karamcheti. It has been his crea tive inspiration that has provided the ideal research environment at the Joint Institute.
Author : Norman Bailey
Publisher : Crowood
Page : 257 pages
File Size : 36,42 MB
Release : 2014-09-30
Category : Transportation
ISBN : 1847979238
This manual has been produced for students undertaking their basic helicopter training. It concentrates on explaining not only how and why the helicopter flies but also on the correct handling techniques needed to master the flying exercises required to obtain a helicopter pilot's licence. The simpliflied text together with an abundance of diagrams will greatly assist the student to become a better and safer helicopter pilot. This is a revised and updated new edition for 2007.A manual for students undertaking their basic helicopter training, covering principles of flight and helicopter handling. Illustrations throughout.
Author :
Publisher :
Page : 410 pages
File Size : 30,87 MB
Release : 1987
Category : Aeronautics
ISBN :