DE19856361C1 - Stabilizer for rotor blade with longitudinally running gap involves bracing of double blade root and additional surface on upper blade leg running from root to hole formation - Google Patents

Stabilizer for rotor blade with longitudinally running gap involves bracing of double blade root and additional surface on upper blade leg running from root to hole formation

Info

Publication number
DE19856361C1
DE19856361C1 DE19856361A DE19856361A DE19856361C1 DE 19856361 C1 DE19856361 C1 DE 19856361C1 DE 19856361 A DE19856361 A DE 19856361A DE 19856361 A DE19856361 A DE 19856361A DE 19856361 C1 DE19856361 C1 DE 19856361C1
Authority
DE
Germany
Prior art keywords
root
blade
stabilizer
leg
running
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.)
Expired - Fee Related
Application number
DE19856361A
Other languages
German (de)
Inventor
Dietmar Hanfland
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE19856361A priority Critical patent/DE19856361C1/en
Application granted granted Critical
Publication of DE19856361C1 publication Critical patent/DE19856361C1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor 
    • F03D1/06—Rotors
    • F03D1/065—Rotors characterised by their construction elements
    • F03D1/0658—Arrangements for fixing wind-engaging parts to a hub
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C11/00—Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft
    • B64C11/16—Blades
    • B64C11/18—Aerodynamic features
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C27/00—Rotorcraft; Rotors peculiar thereto
    • B64C27/32—Rotors
    • B64C27/46—Blades
    • B64C27/467—Aerodynamic features
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Nonmetallic Welding Materials (AREA)

Abstract

The rotor blade with a longitudinally running gap has a stabilizer. A surface (3) on the upper blade leg (6) runs from the root (4) to the hole formation (5), widening the leg, so that it covers over the longitudinally running gap and the lower leg.

Description

Die Erfindung betrifft einen Stabilisator, für ein Rotorblätter mit längs verlaufendem Spalt (EP 0 295 353 B1).The invention relates to a stabilizer for a rotor blade with a longitudinal gap (EP 0 295 353 B1).

Es ist bekannt, das durch die Spreizung der doppelten Blattwurzel der Rotor an Stabilität gewinnt. Die Blattwurzeln können jedoch nicht beliebig weit gespreizt werden. Sie sollen ein strömungsgünstiges Profil bilden.It is known that the rotor gains stability due to the spreading of the double blade root. However, the leaf roots cannot be spread as wide as you like. They should have a streamlined profile form.

Bei größeren Blättern reicht die Spreizung, gegenüber den angreifenden Kräften nicht mehr aus. Die Blattspitze gibt den Kräften nach, der untere Schenkel des Rotors biegt sich bis über den oberen Schenkel. Die Folge, das Rotorblatt wird extremen Verformungen ausgesetzt. Die Verformung kann zur Zerstörung des Rotors führen.With larger leaves, the spread is no longer sufficient compared to the attacking forces. The blade tip yields to the forces, the lower leg of the rotor bends over the upper leg. As a result, the rotor blade is exposed to extreme deformations. The deformation can destroy the Rotor.

Bekannte Stabilisatoren wie Stege oder Rippen verursachen nachteilige Wirbel. Zudem ist die Herstellung aufwendig.Known stabilizers such as webs or ribs cause disadvantageous eddies. In addition, the manufacture complex.

Der Erfindung liegt die Aufgabe zugrunde, ein Rotorblatt mit längs verlaufendem Spalt zu stabilisieren. Gelöst wird die Aufgabe dadurch, das eine Fläche am oberen Blattschenkel, von der Wurzel bis zur Lochung laufend, Schenkel verbreiternd, über den längs verlaufenden Spalt geführt wird und den unteren Schenkel überdeckt.The invention has for its object to stabilize a rotor blade with a longitudinal gap. The task is solved by the fact that a surface on the upper leaf leg, from the root to the perforation running, widening leg, is guided over the longitudinal gap and the lower leg covered.

Folgend wird die Erfindung anhand einer, nur einen Ausführungsweg, darstellenden Zeichnung erläutert.The invention is explained below with the aid of a drawing which represents only one embodiment.

In Fig. 1 ist der Stabilisator (3), gelöst vom Rotor dargestellt. In Fig. 2 ist ein Rotorblatt (2) (EP 0 295 353 B1), für Windkraftanlagen, mit Stabilisator (3) und einer Nabe (1) dargestellt.In Fig. 1 the stabilizer ( 3 ) is shown detached from the rotor. In Fig. 2 is a rotor blade (2) (EP 0295353 B1), for wind turbines, shown with stabilizer (3) and a hub (1).

Erfindungsgemäß verläuft die Fläche (3) von der Wurzel (4) zur Lochung (5) am oberen Schenkel (6) über den unteren Schenkel (7) greifend. Bei der gezeichneten Ausführungsvariante wird der Stabilisator (3) als zusätzliches Bauteil gefertigt und auf den oberen Schenkel (6) aufgebracht.According to the invention, the surface ( 3 ) extends from the root ( 4 ) to the perforation ( 5 ) on the upper leg ( 6 ) over the lower leg ( 7 ). In the embodiment shown, the stabilizer ( 3 ) is manufactured as an additional component and applied to the upper leg ( 6 ).

Der untere Schenkel kann nicht mehr über den oberen Schenkel biegen. Das Anlaufverhalten des Rotars, wird durch die im Winkel (8) angestellte Fläche verbessert. Die in der Patentschrift, EP 0 295 353 B1 in den Zeilen 45-50, erwähnte Sogwirkung wird, bei entsprechender Winkelanstellung, nicht beeinträchtigt.The lower leg can no longer bend over the upper leg. The starting behavior of the rotar is improved by the surface in the angle ( 8 ). The suction effect mentioned in the patent specification, EP 0 295 353 B1 in lines 45-50, is not impaired if the angle is adjusted accordingly.

Claims (1)

Stabilisator für ein Rotorblatt mit längs verlaufendem Spalt, dadurch gekennzeichnet, dass eine Fläche (3), am oberen Blattschenkel (6), von der Wurzel (4) bis zur Lochung (5) laufend, den Schenkel verbreiternd angebracht ist, so dass es den längs verlaufenden Spalt und den unteren Schenkel überdeckt.Stabilizer for a rotor blade with a longitudinal gap, characterized in that a surface ( 3 ), on the upper blade leg ( 6 ), running from the root ( 4 ) to the perforation ( 5 ), the leg is attached so that it extends the longitudinal gap and covered the lower leg.
DE19856361A 1998-12-07 1998-12-07 Stabilizer for rotor blade with longitudinally running gap involves bracing of double blade root and additional surface on upper blade leg running from root to hole formation Expired - Fee Related DE19856361C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19856361A DE19856361C1 (en) 1998-12-07 1998-12-07 Stabilizer for rotor blade with longitudinally running gap involves bracing of double blade root and additional surface on upper blade leg running from root to hole formation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19856361A DE19856361C1 (en) 1998-12-07 1998-12-07 Stabilizer for rotor blade with longitudinally running gap involves bracing of double blade root and additional surface on upper blade leg running from root to hole formation

Publications (1)

Publication Number Publication Date
DE19856361C1 true DE19856361C1 (en) 2000-07-06

Family

ID=7890231

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19856361A Expired - Fee Related DE19856361C1 (en) 1998-12-07 1998-12-07 Stabilizer for rotor blade with longitudinally running gap involves bracing of double blade root and additional surface on upper blade leg running from root to hole formation

Country Status (1)

Country Link
DE (1) DE19856361C1 (en)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1880995A (en) * 1928-11-17 1932-10-04 Squires John Airplane propeller
US1888681A (en) * 1931-04-25 1932-11-22 Lauszat Gustav Propeller
DE661014C (en) * 1933-09-09 1938-06-09 Hans Scheller Wind turbine wing with auxiliary supports
US2648390A (en) * 1945-03-27 1953-08-11 Lagabbe Edmond De Variable pitch screw propeller
DE2725221A1 (en) * 1977-06-03 1978-12-21 Klaus Katzschke Articulated wing system with adjustable V=position - uses several individual wings of arbitrary shape in hinged connection
EP0295353A1 (en) * 1987-06-13 1988-12-21 Khammas, Achmed Adolf Wolfgang Rotorblade
DE3723101A1 (en) * 1987-07-13 1989-02-16 Manfred Uellenberg Helical blade or rotor blade for force and operating helical rotors and rotary wing rotors
DE4201492A1 (en) * 1992-01-21 1994-03-24 Christian Grasser Rotor for flying device - has blades with stabilisers on tips having bendable and retaining cables, bendable ones being attached to drum in centre of rotor

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1880995A (en) * 1928-11-17 1932-10-04 Squires John Airplane propeller
US1888681A (en) * 1931-04-25 1932-11-22 Lauszat Gustav Propeller
DE661014C (en) * 1933-09-09 1938-06-09 Hans Scheller Wind turbine wing with auxiliary supports
US2648390A (en) * 1945-03-27 1953-08-11 Lagabbe Edmond De Variable pitch screw propeller
DE2725221A1 (en) * 1977-06-03 1978-12-21 Klaus Katzschke Articulated wing system with adjustable V=position - uses several individual wings of arbitrary shape in hinged connection
EP0295353A1 (en) * 1987-06-13 1988-12-21 Khammas, Achmed Adolf Wolfgang Rotorblade
DE3723101A1 (en) * 1987-07-13 1989-02-16 Manfred Uellenberg Helical blade or rotor blade for force and operating helical rotors and rotary wing rotors
DE4201492A1 (en) * 1992-01-21 1994-03-24 Christian Grasser Rotor for flying device - has blades with stabilisers on tips having bendable and retaining cables, bendable ones being attached to drum in centre of rotor

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Legal Events

Date Code Title Description
8100 Publication of the examined application without publication of unexamined application
D1 Grant (no unexamined application published) patent law 81
8322 Nonbinding interest in granting licences declared
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee