JPS5549585A - Spoiler flap - Google Patents

Spoiler flap

Info

Publication number
JPS5549585A
JPS5549585A JP12044478A JP12044478A JPS5549585A JP S5549585 A JPS5549585 A JP S5549585A JP 12044478 A JP12044478 A JP 12044478A JP 12044478 A JP12044478 A JP 12044478A JP S5549585 A JPS5549585 A JP S5549585A
Authority
JP
Japan
Prior art keywords
flap
wind mill
spoiler
rear portion
blades
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP12044478A
Other languages
Japanese (ja)
Other versions
JPS577309B2 (en
Inventor
Hisashi Yamamura
Yugo Koyama
Hiroshi Ajiki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Telegraph and Telephone Corp
Nippon Electric Industry Co Ltd
Original Assignee
Nippon Telegraph and Telephone Corp
Nippon Electric Industry Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nippon Telegraph and Telephone Corp, Nippon Electric Industry Co Ltd filed Critical Nippon Telegraph and Telephone Corp
Priority to JP12044478A priority Critical patent/JPS5549585A/en
Publication of JPS5549585A publication Critical patent/JPS5549585A/en
Publication of JPS577309B2 publication Critical patent/JPS577309B2/ja
Granted legal-status Critical Current

Links

Classifications

    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/70Wind energy
    • Y02E10/74Wind turbines with rotation axis perpendicular to the wind direction

Landscapes

  • Wind Motors (AREA)

Abstract

PURPOSE: To provide a spoiler flap used for the blades of a wind mill, which is designed such that its rear upper surface is positioned near the center line of the balde of a wind mill, so that pressure difference on the upper surface and the lower surface at the rear portion of the spoiler flap is increased sufficiently to turn the flap, whereby it is enabled to brake the wind mill positively by applying a large braking force to the blades of wind mill.
CONSTITUTION: Upper surface of spoiler flap 4 at its rear portion l2 is positioned to lie substantially on the center line CL of blade 1 of a wind mill, whereras its front portion l1 is located apart from the center line CL. With such an arrangement for the spoiler flap 4, negative pressure on the upper surface at the rear portion l2 is increased as the turning speed of wind mill increases. On the other hand, pressure on the lower surface of flap 4 at the rear portion l2 is increased by the function of stepped portion 5 formed on the lower surface of flap 4, so that pressure difference on the upper and the lower surfaces of flap 4 is increased sufficiently to turn spoiler flap 4 against the force of spring to a position shown by dotted line 4' in the drawing. Resultantly, a large braking force is acted to the blades 1 of wind mill to brake the same, so that the wind mill can be protected against overspeed.
COPYRIGHT: (C)1980,JPO&Japio
JP12044478A 1978-10-02 1978-10-02 Spoiler flap Granted JPS5549585A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12044478A JPS5549585A (en) 1978-10-02 1978-10-02 Spoiler flap

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12044478A JPS5549585A (en) 1978-10-02 1978-10-02 Spoiler flap

Publications (2)

Publication Number Publication Date
JPS5549585A true JPS5549585A (en) 1980-04-10
JPS577309B2 JPS577309B2 (en) 1982-02-09

Family

ID=14786349

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12044478A Granted JPS5549585A (en) 1978-10-02 1978-10-02 Spoiler flap

Country Status (1)

Country Link
JP (1) JPS5549585A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5527151A (en) * 1992-03-04 1996-06-18 Northern Power Systems, Inc. Advanced wind turbine with lift-destroying aileron for shutdown
US5527152A (en) * 1994-03-04 1996-06-18 Northern Power Systems, Inc. Advanced wind turbine with lift cancelling aileron for shutdown
WO2010131376A1 (en) * 2009-05-11 2010-11-18 株式会社グローバルエナジー Vertically long blades for vertical axis wind wheel

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1857671A1 (en) * 2005-03-07 2007-11-21 Intellectual Property Bank Corp. Blade for vertical shaft windmill and lift type vertical shaft windmill

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5527151A (en) * 1992-03-04 1996-06-18 Northern Power Systems, Inc. Advanced wind turbine with lift-destroying aileron for shutdown
US5527152A (en) * 1994-03-04 1996-06-18 Northern Power Systems, Inc. Advanced wind turbine with lift cancelling aileron for shutdown
WO2010131376A1 (en) * 2009-05-11 2010-11-18 株式会社グローバルエナジー Vertically long blades for vertical axis wind wheel

Also Published As

Publication number Publication date
JPS577309B2 (en) 1982-02-09

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