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Saturday, July 18, 2020 | History

4 edition of Design selection and analysis of a swept and leaned stator concept found in the catalog.

Design selection and analysis of a swept and leaned stator concept

Design selection and analysis of a swept and leaned stator concept

  • 168 Want to read
  • 8 Currently reading

Published by National Aeronautics and Space Administration, Lewis Research Center, National Technical Information Service, distributor in [Cleveland, Ohio], Springfield, VA .
Written in English

    Subjects:
  • Acoustics,
  • Aerodynamic noise,
  • Rotors,
  • Design analysis

  • Edition Notes

    StatementEdmane Envia, M. Nallasamy.
    Series[NASA technical memorandum] -- NASA/TM-1998-208662., NASA technical memorandum -- 208662.
    ContributionsNallasamy, M., Lewis Research Center.
    The Physical Object
    FormatMicroform
    Pagination1 v.
    ID Numbers
    Open LibraryOL17839328M
    OCLC/WorldCa41585097

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Design selection and analysis of a swept and leaned stator concept Download PDF EPUB FB2

DESIGN SELECTION AND ANALYSIS OF A SWEPT AND LEANED STATOR CONCEPT Edmane Envia NASA Lewis Research Center, Cleveland, Ohio M.

Nallasamy NYMA, Inc., Brook Park, Ohio 1. INTRODUCTION The commercial air traffic is expected to increase substantially in the coming years, as air travel becomes more affordable worldwide.

At the same time, Cited by: DESIGN SELECTION AND ANALYSIS OF A SWEPT AND LEANED STATOR CONCEPT a detailed assessment of the acoustic performance of the swept and leaned stator is carried out by comparing its predicted and measured noise reductions. the results demonstrate the validity of the design criterion as well as the theoretical tools used in the design and Cited by: Design selection and analysis of a swept and leaned stator concept (OCoLC) Online version: Envia, Edmane.

Design selection and analysis of a swept and leaned stator concept (OCoLC) Material Type: Government publication, National government publication: Document Type: Book: All Authors / Contributors. Design selection and analysis of a swept and leaned stator concept (OCoLC) Microfiche version: Envia, Edmane.

Design selection and analysis of a swept and leaned stator concept (OCoLC) Material Type: Document, Government publication, National government publication, Internet resource: Document Type: Internet Resource, Computer File. Covers the theory, design, analysis, testing, and research of axial flow fans.

Contains up-to-date data on recent developments in the field. Interrelates fan and duct design techniques. Discusses commercial and product development test procedures.

Covers future experimental research objectives. Includes a reference section on F-series of airfoils. Results show that vane lean and sweep can be used effectively for certain design configurations to reduce the radiated sound power.

Design selection and analysis of a swept and leaned stator concept. Journal of Sound and Vibration, – Elhadidi B. () PASSIVE NOISE CONTROL BY VANE LEAN AND SWEEP.

In: Hall K.C., Kielb R.E Cited by: 3. Beneé ts of Swept-and-Leaned Stators for Fan Noise Reduction. performance of sweep and lean in stator vane design. Three stator sets were used.

Trailing Edge Perforation for Interaction Tonal Noise Reduction of a Contra-Rotating Fan Chen Wang. A Numerical Method for the Design and Analysis of Counter-Rotating Propeller,” Design Selection and Analysis of a Swept and Leaned Stator Concept,”Cited by: 3. A Critical Review of Passive Noise Control Techniques in Industrial Fans Stefano Bianchi.

with a summary of the opportunities for future research and its application to flow and noise control in industrial fan design. Issue Section: Technology Reviews. Topics: Design Selection and Analysis of a Swept and Leaned Stator Concept,”Cited by: 3.

ANALYSIS OF SWEPT AND LEANED STATOR Analysis Tools Sideline Directivities 4. CONCLUSIONS 12 5. ACKNOWLEDGMENTS 13 6. REFERENCES 13 7.

APPENDIX 14 Design Selection and Analysis of a Swept and Leaned Stator Popularized by the founders of IDEO, David Kelly and Tim Brown, The Lean concept of end-user value contributed to the design. Envia, E. and Nallasamy, M. Design selection and analysis of a swept and leaned stator concept.

Journal of Sound and Vibration, Gliebe, P. Aeroacoustics in Turbomachines and Propellers-Future Research Needs. In Unsteady Aerodynamics, Aeroacoustics, and Aeroelasticity of Turbomachines and Pro­pellers, pages Ed. The hub axial location for the swept-and-leaned and swept-only stators was at the same axial location as the radial stator at the smaller rotor-stator spacing (upstream stator location), while the.

Book Search tips Selecting this option will search all publications across the Scitation platform Selecting this option will search all publications for Characterizing computer cooling fan noise The Journal of the Acoustical Society of America “ Design selection and analysis of a swept and leaned stator concept,” J.

Sound Cited by: constant-inside-diameter turbine utilizes a ten degree tangentially leaned stator in stage three. All other bladerows use plain blades. Analysis of the leaned stator is discussed, and detailed design data are summarized.

Steady-state stresses are discussed, and the results of the mechanical design analysis are presented.

Design and analysis of a new axial flux coreless PMSG with three rotors and double stators. the first stator voltage is equal to the voltage of the second stator. Main purpose in the machine design is to obtain the best of output power.

it is understood that the selection of permanent magnet has been made properly and coil type has been Cited by: 7. You can write a book review and share your experiences. Other readers will always be interested in your opinion of the books you've read.

Whether you've loved the book or not, if you give your honest and detailed thoughts then people will find new books that are right for them. Abstract: As the first part of the "Low noise design of fan outlet guide vane" serial articles, this paper proposes an integrated aerodynamic and acoustic design method.

The influence of axial sweep and circumferential lean of Outlet Guide Vane (OGV) on the rotor wake/stator interaction noise of a modern high-bypass ratio fan stage is investigated. mented with stator-resistance adaptation, based on the fun-damental excitation, and analytical stability conditions and design rules are derived for the augmented observer.

Based on these stability conditions, an easy-to-tune observer design is proposed. The proposed design is very simple, and it results in a robust and well-damped closed-loop.

Analysis, Modeling & Design is the third volume of the five-volume set Rock Mechanics and Engineering and contains twenty-eight chapters from key experts in the following fields: Numerical Modeling Methods;- Back Analysis;- Risk Analysis;- Design and Stability Analysis: Overviews;- Design and.

Thoroughly illustrated, with end-of-chapter exercises and numerous case studies and examples, Systems Engineering Analysis, Design, and Development, Second Edition is a primary textbook for multi-discipline, engineering, system analysis, and project management undergraduate/graduate level students and a valuable reference for professionals.

BOGLIETTI et al.: EVOLUTION AND MODERN APPROACHES FOR THERMAL ANALYSIS OF ELECTRICAL MACHINES Fig. 1. Example of heat-transfer network for an electric motor.

Fig. 2. Radial and axial cross sections of the modeled alternator. conductivity [2–3 W/(m C)], this area is of great thermal significance and has to be analyzed with care.Stator B at peak current Stator B at zero current (b) Fig. 6.

Flux densities within the YASA motor (a) air gap (b) in the stator bars at peak load and no load B. Machine Losses – Static Analysis Machine losses are a complex function of speed and torque.

Electromagnetic losses occur in two ways: magnetic hysteresis and I2R losses.Systems Analysis and Design, an interdisciplinary part of science, may refer to.

Systems analysis, a method of studying a system by examining its component parts and their interactions. Structured data analysis (systems analysis), analysing the flow of information within an organization with data-flow diagrams Systems design, the process of defining the architecture.