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Analytical Model Of Rotor Wake Aerodynamics In Ground Effect
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Book Synopsis Analytical Model of Rotor Wake Aerodynamics in Ground Effect by :
Download or read book Analytical Model of Rotor Wake Aerodynamics in Ground Effect written by and published by . This book was released on 1983 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Comprehensive Analytical Model of Rotorcraft Aerodynamics and Dynamics. Part 2: User's Manual by :
Download or read book A Comprehensive Analytical Model of Rotorcraft Aerodynamics and Dynamics. Part 2: User's Manual written by and published by . This book was released on 1980 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Comprehensive Analytical Model of Rotorcraft Aerodynamics and Dynamics. Part 3: Program Manual by :
Download or read book A Comprehensive Analytical Model of Rotorcraft Aerodynamics and Dynamics. Part 3: Program Manual written by and published by . This book was released on 1980 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Comprehensive Analytical Model of Rotorcraft Aerodynamics and Dynamics. Part 1: Analysis Development by :
Download or read book A Comprehensive Analytical Model of Rotorcraft Aerodynamics and Dynamics. Part 1: Analysis Development written by and published by . This book was released on 1980 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt: The development of a comprehensive analytical model of rotorcraft aerodynamics and dynamics is presented. This analysis is designed to calculate rotor performance, loads, and noise; helicopter vibration and gust response; flight dynamics and handling qualities; and system aeroelastic stability. The analysis is a combination of structural, inertial, and aerodynamic models that is applicable to a wide range of problems and a wide class of vehicles. The analysis is intended for use in the design, testing, and evaluation of rotors and rotorcraft, and to be a basis for further development of rotary wing theories. The analysis is implemented in a digital computer program. (Author).
Book Synopsis Ground Effect on a Rotor Wake by : I. Kusmarwanto
Download or read book Ground Effect on a Rotor Wake written by I. Kusmarwanto and published by . This book was released on 1985 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Ground Effect for Lifting Rotors in Forward Flight by : Harry H. Heyson
Download or read book Ground Effect for Lifting Rotors in Forward Flight written by Harry H. Heyson and published by . This book was released on 1960 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Evaluation of Linearized Vortex Theory as Applied to Single and Multiple Rotors Hovering in and Out of Ground Effect by : Harry H. Heyson
Download or read book An Evaluation of Linearized Vortex Theory as Applied to Single and Multiple Rotors Hovering in and Out of Ground Effect written by Harry H. Heyson and published by . This book was released on 1959 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Ground Effect on a Rotor Wake by : E. A. Bound
Download or read book Ground Effect on a Rotor Wake written by E. A. Bound and published by . This book was released on 1983 with total page 29 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1994 with total page 836 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Analysis of Rotor Wake Aerodynamics During Maneuvering Flight Using a Free-vortex Wake Methodology by :
Download or read book Analysis of Rotor Wake Aerodynamics During Maneuvering Flight Using a Free-vortex Wake Methodology written by and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :Kirill V. Rozhdestvensky Publisher :Springer Science & Business Media ISBN 13 :3662042401 Total Pages :358 pages Book Rating :4.6/5 (62 download)
Book Synopsis Aerodynamics of a Lifting System in Extreme Ground Effect by : Kirill V. Rozhdestvensky
Download or read book Aerodynamics of a Lifting System in Extreme Ground Effect written by Kirill V. Rozhdestvensky and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is dedicated to the memory of a distinguished Russian engineer, Rostislav E. Alexeyev, who was the first in the world to develop the largest ground effect machine - Ekranoplan. One of Alexeyev's design concepts with the aerodynamic configuration of a jlying wing can be seen on the front page. The book presents a description of a mathematical model of flow past a lifting system, performing steady and unsteady motions in close proximity to the underlying solid surface (ground). This case is interesting for practical purposes because both the aerodynamic and the economic efficiency of the system near the ground are most pronounced. Use of the method of matched asymptotic expansions enables closed form solutions for the aerodynamic characteristics of the wings-in-ground effect. These can be used for design, identification, and processing of experimental data in the course of developing ground effect vehicles. The term extreme ground effect, widely used through out the book, is associated with very small relative ground clearances of the order of 10% or less. The theory of a lifting surface, moving in immediate proximity to the ground, represents one of the few limiting cases that can be treated analytically. The author would like to acknowledge that this work has been influenced by the ideas of Professor Sheila E. Widnall, who was the first to apply the matched asymptotics techniques to treat lifting flows with the ground effect. Saint Petersburg, Russia February 2000 Kirill V. Rozhdestvensky Contents 1. Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Book Synopsis Parametric Investigation of Aerodynamic Interaction Between Two Rotors and a Flat Plate at Low Reynolds Number by : Mingtai Chen
Download or read book Parametric Investigation of Aerodynamic Interaction Between Two Rotors and a Flat Plate at Low Reynolds Number written by Mingtai Chen and published by . This book was released on 2021 with total page 217 pages. Available in PDF, EPUB and Kindle. Book excerpt: This research studies the rotor wake interaction of small rotors on the surface of a flatplate. The generic model is a simplification of the rotor wake and wing interaction that can exist for small-UAV tiltrotors. Most prior rotor-wing interaction research focuses on large tiltrotor configurations. Compared to these counterparts, the disk loading and Reynolds number in this work are significantly smaller by one to two orders of magnitude. The goal is to better understand the aerodynamic interaction between the rotor thrust and plate download force using experimental, analytical, and numerical tools. Throughout this work, the far-field disk loading and Reynolds number ranged between 25 -45 N/m2 and 57,000 - 80,000, respectively. Rotor thrust, download force on the flat plate, and plate surface pressure were measured in single-rotor/plate interaction and dual-rotor/plate interaction, while only rotor thrust was acquired in dual-rotor interaction. The force measurement results show both rotor thrust and download force increase as rotor-plate distance is reduced and rotor disk coverage is increased in single-rotor/plate interaction and dual-rotor/plate interaction. The increase on rotor thrust is advantageous while download force increase is disadvantageous. The increase on download force is greater than the augmented thrust. In dual-rotor interaction, rotor thrust loss increases as rotor-rotor distance is reduced. Measured pressure contours on the plate surface supports the use of the cylindrical control volume in developing analytical models to estimate download force. Also, pressure contours reveal the nonuniformity of the vertical velocity in the downstream wake, which is an assumption and limitation with momentum theory. Lastly, a smoke visualization technique was used to measure the trajectory of the tip vortex in single-rotor/plate interaction and observe the flow pattern of the upstream wake in dual-rotor interaction. The visualization results were employed in the analytical modeling. The experimental results were compared to numerical simulations using a commercial software, RotCFD package. To facilitate the design on small-UAV tiltrotors, where the wake impinges on the wing,empirical equations derived from ground effect, momentum theory and the acquired experimental data to estimate rotor thrust and download force are developed for single-rotor/plate interaction. Furthermore, two wake models-actuator disk theory and smoke visualization, combined with image vortices and momentum theory-are adopted to estimate rotor thrust and download force in rotor-wing interaction. The analytical models capture the rotor thrust and download force trends in rotor-wing interaction and can be extended to arbitrary rotor disk coverage, rotor height, and other rotor wake models in rotor-wing interaction. The analytical models on rotor thrust are independent from rotor diameter to wing chord ratio, while the empirical equations and the analytical models on download force are dependent on this ratio.
Book Synopsis Free Wake Techniques for Rotor Aerodynamic Analysis. Volume 1: Summary of Results and Background Theory by :
Download or read book Free Wake Techniques for Rotor Aerodynamic Analysis. Volume 1: Summary of Results and Background Theory written by and published by . This book was released on 1982 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Structure of the Rotor Wake in Ground Effect by : S. Bhattacharyya
Download or read book Structure of the Rotor Wake in Ground Effect written by S. Bhattacharyya and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A New Methodology for Free Wake Analysis Using Curved Vortex Elements by : Donald B. Bliss
Download or read book A New Methodology for Free Wake Analysis Using Curved Vortex Elements written by Donald B. Bliss and published by . This book was released on 1987 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Monthly Catalogue, United States Public Documents by :
Download or read book Monthly Catalogue, United States Public Documents written by and published by . This book was released on 1985 with total page 888 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Principles of Helicopter Aerodynamics with CD Extra by : Gordon J. Leishman
Download or read book Principles of Helicopter Aerodynamics with CD Extra written by Gordon J. Leishman and published by Cambridge University Press. This book was released on 2006-04-24 with total page 860 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.