Aeromechanics Technology & Product Design for the 21st Century

Aeromechanics Technology & Product Design for the 21st Century PDF Author:
Publisher:
ISBN:
Category : Helicopters
Languages : en
Pages : 434

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Aeromechanics Technology & Product Design for the 21st Century

Aeromechanics Technology & Product Design for the 21st Century PDF Author:
Publisher:
ISBN:
Category : Helicopters
Languages : en
Pages : 434

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NASA Technical Memorandum

NASA Technical Memorandum PDF Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 176

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International Aerospace Abstracts

International Aerospace Abstracts PDF Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 980

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Verti-flite

Verti-flite PDF Author:
Publisher:
ISBN:
Category : Helicopter
Languages : en
Pages : 868

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Mesh Adaption Strategies for Vortex-dominated Flows

Mesh Adaption Strategies for Vortex-dominated Flows PDF Author: Sean Javad Kamkar
Publisher: Stanford University
ISBN:
Category :
Languages : en
Pages : 218

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Book Description
A new adaptive mesh refinement strategy that is based on a coupled feature-detection and error-estimation approach is developed. The overall goal is to apply the proper degree of refinement to key vortical features in aircraft and rotorcraft wakes. The refinement paradigm is based on a two-stage process wherein the vortical regions are initially identified for refinement using feature-detection, and then the appropriate resolution is determined by the local solution error. The feature-detection scheme uses a local normalization procedure that allows it to automatically identify regions for refinement with threshold values that are not dependent upon the convective scales of the problem. An error estimator, based on the Richardson Extrapolation method, then supplies the identified features with appropriate levels of refinement. The estimator is shown to be well-behaved for steady-state and time-accurate aerodynamic flows. The above strategy is implemented within the Helios code, which features a dual-mesh paradigm of unstructured grids in the near-body domain, and adaptive Cartesian grids in the off-body domain. A main objective of this work is to control the adaption process so that high fidelity wake resolution is obtained in the off-body domain. The approach is tested on several theoretical and practical vortex-dominated flow-fields in an attempt to resolve wingtip vortices and rotor wakes. Accuracy improvements to rotorcraft performance metrics and increased wake resolution are simultaneously documented.

Journal of the American Helicopter Society

Journal of the American Helicopter Society PDF Author: American Helicopter Society
Publisher:
ISBN:
Category : Helicopters
Languages : en
Pages : 782

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Directory of Published Proceedings

Directory of Published Proceedings PDF Author:
Publisher:
ISBN:
Category : Engineering
Languages : en
Pages : 422

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36th Aerospace Sciences Meeting & Exhibit

36th Aerospace Sciences Meeting & Exhibit PDF Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 564

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2nd AIAA/CEAS Aeroacoustics Conference

2nd AIAA/CEAS Aeroacoustics Conference PDF Author:
Publisher:
ISBN:
Category : Aerodynamic noise
Languages : en
Pages : 622

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Introduction to Aircraft Flight Mechanics

Introduction to Aircraft Flight Mechanics PDF Author: Thomas R. Yechout
Publisher: AIAA
ISBN: 9781600860782
Category : Aerodynamics
Languages : en
Pages : 666

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Book Description
Based on a 15-year successful approach to teaching aircraft flight mechanics at the US Air Force Academy, this text explains the concepts and derivations of equations for aircraft flight mechanics. It covers aircraft performance, static stability, aircraft dynamics stability and feedback control.