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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 DE1998156361 DE19856361A DE19856361C1 DE 19856361 C1 DE19856361 C1 DE 19856361C1 DE 1998156361 DE1998156361 DE 1998156361 DE 19856361 A DE19856361 A DE 19856361A DE 19856361 C1 DE19856361 C1 DE 19856361C1
Authority
DE
Grant status
Grant
Patent type
Prior art keywords
blade
leg
running
gap
root
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
DE1998156361
Other languages
German (de)
Inventor
Dietmar Hanfland
Original Assignee
Dietmar Hanfland
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
Grant date

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING WEIGHT AND MISCELLANEOUS MOTORS; PRODUCING MECHANICAL POWER; OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03DWIND MOTORS
    • F03D1/00Wind motors with rotation axis substantially in wind direction
    • F03D1/06Rotors
    • F03D1/065Rotors characterised by their construction, i.e. structural design details
    • F03D1/0658Fixing wind-engaging parts to rotor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B64AIRCRAFT; AVIATION; COSMONAUTICS
    • B64CAEROPLANES; HELICOPTERS
    • B64C11/00Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft
    • B64C11/16Blades
    • B64C11/18Aerodynamic features
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B64AIRCRAFT; AVIATION; COSMONAUTICS
    • B64CAEROPLANES; HELICOPTERS
    • B64C27/00Rotorcraft; Rotors peculiar thereto
    • B64C27/32Rotors
    • B64C27/46Blades
    • B64C27/467Aerodynamic features
    • 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 GASES [GHG] EMISSION, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/70Wind energy
    • Y02E10/72Wind turbines with rotation axis in wind direction
    • Y02E10/721Blades or rotors

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 longitudinal verlaufendem gap (EP 0295353 B1).

Es ist bekannt, das durch die Spreizung der doppelten Blattwurzel der Rotor an Stabilität gewinnt. It is known that wins by the spreading of the double blade root of the rotor of stability. Die Blattwurzeln können jedoch nicht beliebig weit gespreizt werden. However, the blade roots can not be arbitrarily far apart. Sie sollen ein strömungsgünstiges Profil bilden. They should form a favorable flow profile.

Bei größeren Blättern reicht die Spreizung, gegenüber den angreifenden Kräften nicht mehr aus. For larger leaves, the spread is no longer sufficient, against the attacking forces. Die Blattspitze gibt den Kräften nach, der untere Schenkel des Rotors biegt sich bis über den oberen Schenkel. The blade tip is by the forces of the lower leg of the rotor deflects to beyond the upper leg. Die Folge, das Rotorblatt wird extremen Verformungen ausgesetzt. The result, the rotor blade is subjected to extreme deformation. Die Verformung kann zur Zerstörung des Rotors führen. The deformation can lead to destruction of the rotor.

Bekannte Stabilisatoren wie Stege oder Rippen verursachen nachteilige Wirbel. Known stabilizers such as webs or ribs cause adverse vertebrae. Zudem ist die Herstellung aufwendig. Moreover, the production is expensive.

Der Erfindung liegt die Aufgabe zugrunde, ein Rotorblatt mit längs verlaufendem Spalt zu stabilisieren. The invention has for its object to stabilize a rotor blade with longitudinal verlaufendem gap. 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 object is, which is an area on the upper sheet leg, up to the perforation constantly from the root legs widening, via the longitudinal slot and covers the lower leg dissolved.

Folgend wird die Erfindung anhand einer, nur einen Ausführungsweg, darstellenden Zeichnung erläutert. Following the invention by way of a will be explained only one possible embodiment, illustrated in the drawings.

In Fig. 1 ist der Stabilisator ( 3 ), gelöst vom Rotor dargestellt. In Fig. 1, the stabilizer (3) dissolved shown from the rotor. In Fig. 2 ist ein Rotorblatt ( 2 ) (EP 0 295 353 B1), für Windkraftanlagen, mit Stabilisator ( 3 ) und einer Nabe ( 1 ) dargestellt. In Fig. 2 is a rotor blade (2) (EP 0295353 B1), for wind power plants, with a 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. According to the invention the surface (3) extending from the root (4) to the hole (5) at the upper limb (6) over the lower leg (7) across. Bei der gezeichneten Ausführungsvariante wird der Stabilisator ( 3 ) als zusätzliches Bauteil gefertigt und auf den oberen Schenkel ( 6 ) aufgebracht. In the illustrated embodiment, the stabilizer (3) is applied is manufactured as an additional component, and on the upper leg (6).

Der untere Schenkel kann nicht mehr über den oberen Schenkel biegen. The lower leg can not bend over the upper leg. Das Anlaufverhalten des Rotars, wird durch die im Winkel ( 8 ) angestellte Fläche verbessert. The startup behavior of the Rotars is improved by the angle (8) relief surface. Die in der Patentschrift, EP 0 295 353 B1 in den Zeilen 45-50, erwähnte Sogwirkung wird, bei entsprechender Winkelanstellung, nicht beeinträchtigt. The suction effect is in the patent specification EP 0295353 B1 in the lines 45-50, mentioned, not be affected with appropriate angular setting.

Claims (1)

  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 longitudinal verlaufendem gap, characterized in that a surface (3), at the upper leaf limb (6), from the root (4) to the hole (5) continuously, the leg is attached widening, so that the longitudinal gap and the lower leg covering.
DE1998156361 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
DE1998156361 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
DE1998156361 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
DE1998156361 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 Windradfluegel with Hilfsstuetzen
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 Windradfluegel with Hilfsstuetzen
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 licenses declared
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee