Author: Nita Darshini Nathan
Publisher:
ISBN:
Category : Rotors (Helicopters)
Languages : en
Pages : 265
Book Description
The Rotor Wake in Ground Effect and Its Investigation in a Wind Tunnel
Author: Nita Darshini Nathan
Publisher:
ISBN:
Category : Rotors (Helicopters)
Languages : en
Pages : 265
Book Description
Publisher:
ISBN:
Category : Rotors (Helicopters)
Languages : en
Pages : 265
Book Description
A Wind-tunnel Investigation of Helicopter Directional Control in Rearward Flight in Ground Effect
Author: Robert J. Huston
Publisher:
ISBN:
Category : Helicopters
Languages : en
Pages : 44
Book Description
An investigation was conducted in the Langley full-scale tunnel to study the aerodynamics that produce directional-control problems for a helicopter with a tail rotor in low-speed rearward flight in ground effect. A helicopter model mounted close to the tunnel floor was tested in tail winds from 0 to 25 knots.
Publisher:
ISBN:
Category : Helicopters
Languages : en
Pages : 44
Book Description
An investigation was conducted in the Langley full-scale tunnel to study the aerodynamics that produce directional-control problems for a helicopter with a tail rotor in low-speed rearward flight in ground effect. A helicopter model mounted close to the tunnel floor was tested in tail winds from 0 to 25 knots.
Rotor/body Aerodynamic Interactions
Author: Mark D. Betzina
Publisher:
ISBN:
Category : Aerodynamics
Languages : en
Pages : 44
Book Description
A wind-tunnel investigation was conducted in which independent, steady-state aerodynamic forces and moments were measured on a 2.24-m-diam, two- bladed helicopter rotor and on several different bodies. The objective was to determine the mutual interaction effects for variations in velocity, thrust, tip-path-plane angle of attack, body angle of attack, rotor/body position, and body geometry. the results of the investigation show that the body longitudinal aerodynamic characteristics are significantly affected by the presence of a rotor and hub, and that the hub interference may be a major part of such interaction. This report presents the effects of various parameters on the interactions and discusses the difficulties encountered in determining the effect of the body on the rotor performance.
Publisher:
ISBN:
Category : Aerodynamics
Languages : en
Pages : 44
Book Description
A wind-tunnel investigation was conducted in which independent, steady-state aerodynamic forces and moments were measured on a 2.24-m-diam, two- bladed helicopter rotor and on several different bodies. The objective was to determine the mutual interaction effects for variations in velocity, thrust, tip-path-plane angle of attack, body angle of attack, rotor/body position, and body geometry. the results of the investigation show that the body longitudinal aerodynamic characteristics are significantly affected by the presence of a rotor and hub, and that the hub interference may be a major part of such interaction. This report presents the effects of various parameters on the interactions and discusses the difficulties encountered in determining the effect of the body on the rotor performance.
A Comparative Sudy of a Rotor Wake in Ground Effect Under Simulated Wind Tunnel Conditions and During Field Trials
Author: P. Dhar
Publisher:
ISBN:
Category :
Languages : en
Pages : 70
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 70
Book Description
Trim Requirements and Static-stability Derivatives from a Wind-tunnel Investigation of a Lifting Rotor in Transition
Author: Julian L. Jenkins (Jr.)
Publisher:
ISBN:
Category : Rotors (Helicopters)
Languages : en
Pages : 42
Book Description
Publisher:
ISBN:
Category : Rotors (Helicopters)
Languages : en
Pages : 42
Book Description
Jet-boundary Corrections for Lifting Rotors Centered in Rectangular Wind Tunnels
Author: Harry H. Heyson
Publisher:
ISBN:
Category : Aerodynamics
Languages : en
Pages : 68
Book Description
Publisher:
ISBN:
Category : Aerodynamics
Languages : en
Pages : 68
Book Description
Wind-tunnel Investigation of Helicopter-rotor Wake Effects on Three Helicopter Fuselage Models
Author: John C. Wilson
Publisher:
ISBN:
Category : Helicopters
Languages : en
Pages : 226
Book Description
Publisher:
ISBN:
Category : Helicopters
Languages : en
Pages : 226
Book Description
Application of the Wide-field Shadowgraph Technique to Rotor Wake Visualization
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 26
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 26
Book Description
New Results in Numerical and Experimental Fluid Mechanics VIII
Author: Andreas Dillmann
Publisher: Springer Science & Business Media
ISBN: 364235680X
Category : Technology & Engineering
Languages : en
Pages : 747
Book Description
This volume contains the contributions to the 17th Symposium of STAB (German Aerospace Aerodynamics Association). STAB includes German scientists and engineers from universities, research establishments and industry doing research and project work in numerical and experimental fluid mechanics and aerodynamics, mainly for aerospace but also for other applications. Many of the contributions collected in this book present results from national and European Community sponsored projects. This volume gives a broad overview of the ongoing work in this field in Germany and spans a wide range of topics: airplane aerodynamics, multidisciplinary optimization and new configurations, hypersonic flows and aerothermodynamics, flow control (drag reduction and laminar flow control), rotorcraft aerodynamics, aeroelasticity and structural dynamics, numerical simulation, experimental simulation and test techniques, aeroacoustics as well as the new fields of biomedical flows, convective flows, aerodynamics and acoustics of high-speed trains.
Publisher: Springer Science & Business Media
ISBN: 364235680X
Category : Technology & Engineering
Languages : en
Pages : 747
Book Description
This volume contains the contributions to the 17th Symposium of STAB (German Aerospace Aerodynamics Association). STAB includes German scientists and engineers from universities, research establishments and industry doing research and project work in numerical and experimental fluid mechanics and aerodynamics, mainly for aerospace but also for other applications. Many of the contributions collected in this book present results from national and European Community sponsored projects. This volume gives a broad overview of the ongoing work in this field in Germany and spans a wide range of topics: airplane aerodynamics, multidisciplinary optimization and new configurations, hypersonic flows and aerothermodynamics, flow control (drag reduction and laminar flow control), rotorcraft aerodynamics, aeroelasticity and structural dynamics, numerical simulation, experimental simulation and test techniques, aeroacoustics as well as the new fields of biomedical flows, convective flows, aerodynamics and acoustics of high-speed trains.
A Study of Multi-rotor Interference and Ground Effect Using a Free-vortex Wake Model
Author: Daniel A. Griffiths
Publisher:
ISBN:
Category :
Languages : en
Pages : 304
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 304
Book Description