Transonic airfoil and axial flow rotary machine

Nagai, Naonori; Iwatani, Junji

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A - human necessities
A01 - agriculture
A21 - baking
A22 - butchering
A23 - foods or foodstuffs
A24 - tobacco
A41 - wearing apparel
A42 - headwear
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A44 - haberdashery
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A47 - furniture
A61 - medical or veterinary science
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A99 - subject matter not otherwise provided for in this section
B - performing operations
B01 - physical or chemical processes or apparatus in general
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B03 - separation of solid materials using liquids or using pneumatic tables or jigs
B04 - centrifugal apparatus or machines for carrying-out physical or chemical processes
B05 - spraying or atomising in general
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B22 - casting
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B60 - vehicles in general
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B62 - land vehicles for travelling otherwise than on rails
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B67 - opening, closing {or cleaning} bottles, jars or similar containers
B68 - saddlery
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C01 - inorganic chemistry
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D - textiles
D01 - natural or man-made threads or fibres
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D06 - treatment of textiles or the like
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D10 - indexing scheme associated with sublasses of section d, relating to textiles
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F - mechanical engineering
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Title: Transonic airfoil and axial flow rotary machine

Abstract

Sectional profiles close to a tip 124 and a part between a midportion 125 and a hub 123 are shifted to the upstream of an operating fluid flow in a sweep direction. Accordingly, an S shape is formed in which the tip 124 and the part between the midportion 125 and the hub 123 protrude. As a result, it is possible reduce various losses due to shook, waves, thereby forming a transonic airfoil having an excellent aerodynamic characteristic.

Inventors:: Nagai, Naonori; Iwatani, Junji

Issue Date:: Tue Sep 01 00:00:00 EDT 2015

Research Org.:: Mitsubishi Heavy Industries, Ltd., Tokyo (Japan)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1213472

Patent Number(s):: 8133012

Application Number:: 12/447,951

Assignee:: Mitsubishi Heavy Industries, Ltd. (Tokyo, JP)

Patent Classifications (CPCs):: F - MECHANICAL ENGINEERING F01 - MACHINES OR ENGINES IN GENERAL F01D - NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES

F - MECHANICAL ENGINEERING F04 - POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS F04D - NON-POSITIVE-DISPLACEMENT PUMPS

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F - MECHANICAL ENGINEERING F01 - MACHINES OR ENGINES IN GENERAL F01D - NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
F01D5/141 - {Shape, i.e. outer, aerodynamic form

F - MECHANICAL ENGINEERING F04 - POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS F04D - NON-POSITIVE-DISPLACEMENT PUMPS
F04D21/00 - Pump involving supersonic speed of pumped fluids
F04D29/324 - {Blades}

F - MECHANICAL ENGINEERING F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04 F05D - INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
F05D2220/36 - specially adapted for the fan of turbofan engines
F05D2250/713 - inflexed

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02T - CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
Y02T50/60 - Efficient propulsion technologies

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DOE Contract Number:: FC26-05NT42643

Resource Type:: Patent

Resource Relation:: Patent File Date: 2007 Sep 11

Country of Publication:: United States

Language:: English

Subject:: 42 ENGINEERING

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                    Nagai, Naonori, and Iwatani, Junji. Transonic airfoil and axial flow rotary machine.  United States: N. p., 2015. 
        Web.

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                    Nagai, Naonori, & Iwatani, Junji. Transonic airfoil and axial flow rotary machine.  United States.

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                    Nagai, Naonori, and Iwatani, Junji. Tue .  
        "Transonic airfoil and axial flow rotary machine".  United States.  https://www.osti.gov/servlets/purl/1213472.

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@article{osti_1213472,

  title        = {Transonic airfoil and axial flow rotary machine},

  author       = {Nagai, Naonori and Iwatani, Junji},

  abstractNote = {Sectional profiles close to a tip 124 and a part between a midportion 125 and a hub 123 are shifted to the upstream of an operating fluid flow in a sweep direction. Accordingly, an S shape is formed in which the tip 124 and the part between the midportion 125 and the hub 123 protrude. As a result, it is possible reduce various losses due to shook, waves, thereby forming a transonic airfoil having an excellent aerodynamic characteristic.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {Tue Sep 01 00:00:00 EDT 2015},

  month        = {Tue Sep 01 00:00:00 EDT 2015}

}

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Works referenced in this record:

Multi-sweep blade with abrupt sweep transition
patent, November 1991

Kimball, Richard
US Patent Document 5,064,345
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5064345

Compressor outlet guide vane support
patent, October 1993

Stueber, Henry B.; Baehre, Eric E.
US Patent Document 5,249,921
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5249921

Swept turbomachinery blade
patent, July 1997

Spear, David A.; Biederman, Bruce P.; Orosa, John A.
US Patent Document 5,642,985
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5642985

Swept fan blade
patent, June 2000

Rowlands, Paul A.
US Patent Document 6,071,077
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/6071077

Swept barrel airfoil
patent, December 2001

Decker, John J.; Breeze-Stringfellow, Andrew; Steinmetz, Gregory T.
US Patent Document 6,328,533
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/6328533

Doubled bowed compressor airfoil
patent, December 2001

Liu, Hsin-Tuan; Dickman, Robert Bruce; Krabacher, Kenneth William
US Patent Document 6,331,100
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/6331100

Works referencing / citing this record: