EP2274516A2 - Éolienne munie d'un système d'entrée d'air - Google Patents

Éolienne munie d'un système d'entrée d'air

Info

Publication number
EP2274516A2
EP2274516A2 EP08749404A EP08749404A EP2274516A2 EP 2274516 A2 EP2274516 A2 EP 2274516A2 EP 08749404 A EP08749404 A EP 08749404A EP 08749404 A EP08749404 A EP 08749404A EP 2274516 A2 EP2274516 A2 EP 2274516A2
Authority
EP
European Patent Office
Prior art keywords
air inlet
wind turbine
air
inlet opening
nacelle
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.)
Withdrawn
Application number
EP08749404A
Other languages
German (de)
English (en)
Inventor
Thomas Feddern
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.)
Powerwind GmbH
Original Assignee
Powerwind GmbH
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 Powerwind GmbH filed Critical Powerwind GmbH
Publication of EP2274516A2 publication Critical patent/EP2274516A2/fr
Withdrawn legal-status Critical Current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 
    • F03D1/04—Wind motors with rotation axis substantially parallel to the air flow entering the rotor  having stationary wind-guiding means, e.g. with shrouds or channels
    • 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 
    • F03D1/02—Wind motors with rotation axis substantially parallel to the air flow entering the rotor  having a plurality of rotors
    • 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
    • F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
    • F03D13/10—Assembly of wind motors; Arrangements for erecting wind motors
    • 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
    • F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
    • F03D9/20—Wind motors characterised by the driven apparatus
    • F03D9/25—Wind motors characterised by the driven apparatus the apparatus being an electrical generator
    • 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
    • F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
    • F03D80/60—Cooling or heating of wind motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00—Components
    • F05B2240/10—Stators
    • F05B2240/14—Casings, housings, nacelles, gondels or the like, protecting or supporting assemblies there within
    • 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

Definitions

  • the invention relates to a wind energy plant with a tower, a gondola arranged at the upper end of the tower, rotatably mounted with respect to the vertical tower axis and an inner space delimited by a housing, a rotor mounted rotatably with respect to a rotor axis extending transversely to the tower axis with respect to the nacelle, which can be displaced by an air flow in a direction of flow approximately parallel to the rotor axis in a rotation about the rotor axis, the nacelle housing having a convex or planar Strömungsleit Structure for an inflowing in the air flow direction, and arranged on the housing and an air inlet opening having air inlet assembly for supplying air to the interior.
  • Such wind turbines are known (DE 10 2004 046 700 A1). Due to the rotatable mounting of the nacelle on the tower, the rotor of the system is suitably rotated in the wind during operation, so that the wind flowing in a direction of flow onto the rotor causes the rotor to rotate.
  • the windward side of the nacelle is turned into the wind while a leeward runner would turn the rotor side of the nacelle to the leeward side (lee).
  • the wind causes the rotor of the system to rotate, it flows around the nacelle housing essentially in the direction of flow along this usually streamlined outer surface.
  • the outer or outer surface of the nacelle housing has one or more convex or planar flow guide surfaces for the air flow flowing in the wind direction or inflow direction along which the air flow is conducted around the nacelle.
  • the invention is therefore an object of the invention to provide an improved air supply into the nacelle interior.
  • the air inlet arrangement has a extending in the direction of flow towards the air inlet opening indentation in the flow guide and the air inlet opening between a boundary surface of the recess and the adjoining region of the Flow control surface is arranged.
  • the invention is based on the surprisingly simple knowledge that a satisfactory amount of air can pass through the inventive design of the air intake assembly in a passive manner in the gondola interior.
  • the complex active air intake can be reduced or even waived.
  • the supplied air flow increases with increasing wind strength, ie just when there is also a higher cooling demand.
  • the air flow follows the indentation in the flow guide and flows toward the air inlet opening, through it and into the nacelle interior. Due to the design of the inlet in the direction of flow lying in front of the air inlet opening indentation is also achieved that the largest possible amount of air can flow into the interior of the gondola. This is because due to the indentation, air vortices are formed which at least in part prevent a boundary layer of the air flow from entering the air inlet opening due to the friction at the surface with respect to the outside air flow. The pressure loss during inflow is comparatively low.
  • a recessed area is here to be understood a concave area of a part of the outer area with respect to a close vicinity of this area.
  • it does not require a concave course of the surface in the inflow direction or extension direction of the indentation, even if the latter represents an advantageous realization.
  • a region which is close to the direction of extent in the direction of extent the outer surface itself form a curvature to the outside with respect to a more distant environment, the concave area nevertheless forming an indentation with respect to the near surrounding area.
  • the realization of the air inlet arrangement according to the invention has features of a so-called NACA air inlet (National Advisory Committee for Aeronautics, ACR No. 5120), in particular the profile shown in FIGS. 3 to 5 corresponds to that of a NACA air inlet. This was developed to allow even at supersonic speed an aerodynamics of an aircraft as little as possible affecting air supply. Furthermore, NACA inlets are also used in automobiles (US 5,042,603), particularly where good aerodynamics of the vehicles is important, e.g. in racing and racing cars designed for racing purposes.
  • a surface normal defining a longitudinal direction of the indentation has a component in the direction of the inflow direction on the cross-sectional area of the air inlet opening and preferably extends approximately in anti-parallel thereto.
  • the incoming air quantity can be increased again.
  • the air inlet opening in this case extends in a depth direction directed from the flow guide surface to the interior of the gondola. Since the air flow in front of the air inlet opening is substantially tangential to the nacelle surface in this area, the inflowing air quantity can be further optimized by the air inlet opening arranged in the depth direction.
  • the air inlet opening forms a step or discontinuity in the height profile of the outer surface between the boundary surface of the recess, eg the indentation floor, and the adjacent flow guide area, and the depth direction is approximately anti-parallel to the normal in this adjacent area.
  • the boundary surface of the indentation has a first wall region whose wall height, which is determined with respect to the depth direction, decreases in the longitudinal direction. This promotes the above-mentioned vortex formation and ensures good inflow behavior along the wall area.
  • the air inlet opening extends in a transverse, in particular perpendicular to the depth direction and transverse to the longitudinal direction extending width direction, and a distance in the width direction from the first wall portion to a longitudinal direction and with respect to the width direction through the center of the air inlet opening and in particular orthogonal to it extending axis x decreases in the longitudinal direction.
  • the first wall region extends up to the air inlet opening, in particular while approximating the height profile of the flow guide at the upper end of the wall to the height profile of the adjacent flow guide.
  • the inflowing air can be guided to the side of the air inlet opening and in particular a Lufückückstau Struktur be prevented.
  • a further advantageous embodiment results when a ratio between width spacing and wall height in the range of 1 to 4, preferably 1, 3 to 3.3, in particular 1.7 to 2.7, and in particular if this ratio for up to 30 % of the longitudinal extent of the concave region, preferably up to 60%, in particular up to 80% is satisfied.
  • the first wall region extends to the end region of the recess facing away from the air inlet opening.
  • the course of the first wall region is at least partially curved, and in particular the curvature in the longitudinal direction is first directed to the axis and then after passing through a point of inflection directed away from the axis.
  • a further improved flow profile can be obtained since it is again better avoided that a boundary layer of the air flow reaches the air inlet opening due to the friction with the surface with respect to the outside air flow reduced flow velocity.
  • the pressure loss is further reduced.
  • the inflection point can be arranged in the range of 25 to 65% of the length, preferably 35 to 55%, in particular 40 to 50%. In this area, the specified effect is effectively amplified.
  • the decrease in the wall height with respect to the corresponding length of the wall region in the longitudinal direction defines an average gradient in the range of 3 ° to 20 °, preferably 5 ° to 10 °, in particular 6 ° to 8 °.
  • This characteristic of the height profile of the indentation allows an optimized velocity profile of the incoming air and correspondingly low pressure losses can be achieved.
  • a bottom region of the indentation may extend in a straight line in a section through a plane determined by the longitudinal direction and the depth direction, and in particular the average gradient may define a ramp angle.
  • An appropriately designed floor area can be easily realized structurally and ensures a suitable
  • the indentation opposite the first wall region, has a second wall region, which in particular has the abovementioned properties of the first wall region.
  • the axis extends perpendicular to the air inlet opening, and the air inlet arrangement is formed substantially symmetrical to the axis. In this way, a uniform flow profile of the incoming air be achieved.
  • a limitation of the symmetry may be due to the fact that, for example, the wall portions fail due to the curvature of the flow guide area, in which the air inlet assembly is provided, of different lengths.
  • the bottom area dips into the outer surface of the nacelle as a slit-like cut.
  • the air flow is already suitably guided towards the interior.
  • a width to height ratio of the air inlet opening is in the range of 2.5 to 5.5, preferably 3 to 5, in particular 3.5 to 4.5. This provides suitable inflow conditions in the opening area.
  • the orientation is expediently expedient such that the longitudinal direction extends substantially to the windward side, so in accordance with the prior art designed as a so-called windward wind turbines, in which the rotor blades on the side facing the wind Gondola are facing the rotor.
  • a cutting angle between the rotor axis and the projection of the longitudinal direction of the indentation on the plane defined by the rotor axis and tower axis lies in a range of 0 to 30 °, preferably 0 to 20 °, in particular 0 to 10 °.
  • the air intake arrangement can supply the largest possible amount of air.
  • the air inlet arrangement is in the lower
  • the recess is arranged with respect to the rotor axis in the region of the tower of the nacelle on the tower. This allows the air to flow into the rear area of the nacelle.
  • the invention provides no special restrictions. However, it is preferred that the length of the indentation in relation to the tower diameter at the nacelle level be in the range of 0.1 to 2, preferably from 0.25 to 1.5, more preferably from 0.5 to 1.25, especially from 0.8 to 1, 1. Preferred absolute dimensions are given in claims 22 to 25.
  • At least one air outlet arrangement for the air supplied via the air inlet arrangement can expediently be provided, which can advantageously be arranged in particular in a region of the nacelle tapering in the direction of the rotor axis.
  • the latter arrangement is particularly favorable with regard to the external flow, because the decrease in the speed of the outer flow in the tapered region of the nacelle facilitates the removal of the air and, on the other hand, the negative pressure in this region outside the nacelle favors the removal of air.
  • the air can be efficiently guided out of the nacelle when the air outlet assembly has one or more features of the air intake assemblies described above.
  • the air supply serves primarily to cool the generator of the wind turbine.
  • the air inlet arrangement downstream air duct can also be designed so that in addition an optionally coupled between the rotor and generator gearbox, a frequency converter and / or a transformer is cooled.
  • the invention provides a method of operating a wind turbine essentially characterized in that the air supply to the nacelle interior is achieved at least in part in a passive manner by an air inflow through an air inlet arrangement having one or more of the above characteristics.
  • FIG. 1 shows a nacelle of a wind turbine according to the invention in a side view
  • FIG. 2 shows the gondola shown in FIG. 1 in a perspective view
  • Fig. 3 shows a geometry of the indentation of
  • Fig. 4 shows the recess of the air inlet assembly in a sectional view taken along the axis X of Fig. 3
  • Fig. 5 shows a sectional view of the first portion of the air inlet assembly taken along lines VV of Figs , Figs. 6a, b show a first realization of an air inlet arrangement according to the invention
  • Figs. 7a, b show a second embodiment of an inventive air inlet arrangement.
  • a nacelle with nacelle housing 10 is shown in a side view, the lateral surface or outer surface 3 is formed convexly from the basic shape.
  • the outer surface 3 of the housing 10 forms a flow guide for the wind flowing around the nacelle.
  • a recess 1 is formed between the outer surface areas 3.1, 3.2 and 3.3.
  • the indentation 1 represents a concave air inlet in the form of a gap continuously increasing and widening in the direction of flow a (hereinafter a) and against the drawn longitudinal direction I (hereinafter I).
  • Outside air flowing along the lateral surface 3 with component in the direction of flow a flows along the bottom surface 5 of the gap 1 and through the inlet opening 12 in the nacelle interior.
  • the inlet opening 12 extends in a parallel to the plotted normal n (in the following n) extending height direction h (Fig. 2, hereinafter h) or the opposite direction of the depth of the gondola interior.
  • the slit-shaped air inlet 1 spreads from a measured in the width direction w (hereinafter w) width W 0 at the inlet opening 12 opposite end to the inlet opening 12, whose width is designated W.
  • w width
  • a wall surface 4 which compensates for a difference in height in the outer surface profile between the bottom surface 5 of the air inlet gap 1 and the transverse thereto adjacent area 3.3 of the outer surface 3, formed curved, but as better seen in the schematic representation of Fig. 3 and there will be explained in more detail.
  • the wall surface 6 opposite the wall surface 4 compensates for a height difference of the bottom surface 5 from the region 3.2 of the outside surface 3 adjoining the outside, and is arranged substantially axially symmetrically with respect to the wall surface 4.
  • the gap 1 begins at its opposite end of the opening 12, to immerse under an imaginary shape-preserving continuation between the areas 3.1, 3.2 and 3.3 of the outer surface. It creates a kind of spoiler.
  • the depth of the gap or the height h x of the walls 4 and 6 rises to the opening 12 at its height H. In the illustrated embodiment, this increase is linear.
  • the floor area 5 is formed like a ramp with a uniform inclination, wherein the inclination angle in the concrete embodiment is 7 °.
  • the air inlet assembly 1, 12 is formed in this embodiment at the level of the tower, not shown, near an insertion opening 7 for the upper end of the tower.
  • the longitudinal direction I has substantially the same angle of inclination relative to the direction of gravity as the rotor axis, which is indicated in Figures 1 and 2 and designated R.
  • an air outlet opening e.g. may be formed at the rear tapered end of the nacelle.
  • FIGS. 1 and 2 Even though only one air inlet gap 1 and one air inlet opening 12 are shown in FIGS. 1 and 2, a symmetrically arranged further air inlet arrangement 1 ', 12' can be formed on the other side of the nacelle, for example. But it could also be provided several smaller sized air intake assemblies. Due to the profile of the air inlet gap 1, the air can pass through the inlet opening 12 at the speed of the outside air flow, thus providing improved ventilation of the nacelle interior. At extremely low pressure losses, an effective passive air supply is realized.
  • the profile of the air inlet gap 1 with respect to a spanned by the longitudinal direction I and width direction w plane can be seen again in more detail.
  • the walls 4 and 6 are axisymmetric to the central axis X to each other. They extend substantially perpendicularly from the opening surface 12, curve in the direction of the axis X, reach a point of inflection at approximately 45% of the total length of the gap, after which they curve away from the central axis X, the curvature in Direction towards the wall end with width W 0 increasingly reduced and the wall reaches the column end substantially in a linear form, namely at an angle of about 8 ° with respect to the central axis X.
  • the relative width of the air inlet gap 1 is related to the width W of the air inlet opening with respect to the distance x in the direction of length I relative to the total length L indicated.
  • the input width W 0 of the air inlet gap 1 is about 10% of the width of the gap at the air inlet opening 12.
  • the input width W 0 could also be larger or smaller, it being preferred that the ratio of input width W 0 and end width W is in the range of 5 to 50%, preferably 10 to 30%, especially 10 to 25%.
  • Fig. 4 is a section is shown, which is taken through the central axis X of Fig. 3 in the height direction h, so that the course of the bottom 5 along the longitudinal direction I can be seen well. It can be seen that the bottom portion 5 is lowered against a dashed line indicating the height profile of the walls 4, 6, in the form of a ramp to the air inlet opening 12. By the height H of the air inlet opening 12 and the length L of the concave portion 1 results in an inclination angle ⁇ of the ramp as arctan (H / L).
  • ⁇ is 7 °.
  • the height h x at the distance x from the air inlet port 12 is (1-x / L) H.
  • a constant ramp slope is preferred, but the ramp slope need not be constant. In particular, it may be considered to also use a ramp with a variable pitch, eg as indicated by the wall curve 6 in FIG. 3, with an average pitch angle of eg 7 °.
  • FIG. 5 shows a cross-section along the lines V-V of FIGS. 3 and 4, respectively. It can be seen that the bottom surface 5 is evenly selected, the walls 4 and 6 enclosing a right angle with the bottom region 5 and with the outer surface regions 3.2 and 3.3 adjoining outwards. The latter, however, is an idealized representation that would be achievable while maintaining the symmetry of the air intake assembly only in a surface area with vanishing curvature. If the air inlet gap is embedded in a convex surface area, the two-sided right angle will not be realized and are e.g. the side walls in this illustration e.g. be inclined to a mid-perpendicular to the bottom surface 5.
  • the bottom surface 5 could also be convex and in particular adapted to the convex outer surface regions 3.2 and 3.3. However, it could also be the entire recess in the cross-section, e.g. be formed parabolic, wherein the bottom portion then corresponds to the longitudinal course of the vertex line.
  • FIG. 6a shows an enlarged view, with respect to FIG. 1, of the air inlet opening arrangement in a first implementation.
  • the width W of the air inlet opening is 650 mm
  • the length L of the ramped inlet is 1523 mm
  • the width W 0 at the beginning of the gap is 100 mm.
  • the air inlet assembly of the first implementation is shown in a further enlarged view, but seen from the interior of the gondola.
  • the height H of the air inlet port 12 is 236 mm in this example.
  • a second embodiment of the air inlet assembly is shown in Figures 7a and 7b. These correspond, apart from different dimensions, to FIGS. 6a and 6b.
  • the width W of the air intake port is 690 mm
  • the height H is 200 mm. Length L and entrance width W 0 of the ramp-shaped inlet amount to 1350 mm and 180 mm in the second example.
  • the generator of the system as well as a coupled between the rotor and generator gearbox can be cooled in an advantageous manner.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Wind Motors (AREA)

Abstract

L'invention concerne une éolienne comprenant une tour, une nacelle qui est placée à l'extrémité supérieure de la tour, qui est montée à rotation par rapport à l'axe vertical de la tour et qui présente un espace intérieur délimité par une enveloppe, un rotor qui est monté à rotation par rapport à la nacelle autour d'un axe de rotor perpendiculaire à l'axe de la tour et qu'un flux d'air soufflant dans un sens de soufflage approximativement parallèle à l'axe du rotor peut faire tourner autour de l'axe de rotor, l'enveloppe de la nacelle présentant une surface de guidage de flux convexe ou plane pour un flux d'air soufflant dans le sens de soufflage, ainsi qu'un système d'entrée d'air qui est placé sur l'enveloppe, qui présente un orifice d'entrée d'air et qui sert à amener de l'air dans l'espace intérieur. Selon l'invention, le système d'entrée d'air présente dans la surface de guidage de flux un évidement s'étendant vers l'orifice d'entrée d'air dans le sens de soufflage et l'orifice d'entrée d'air est placé entre une surface de délimitation de l'évidement et la zone qui y est adjacente de la surface de guidage de flux.
EP08749404A 2008-05-08 2008-05-08 Éolienne munie d'un système d'entrée d'air Withdrawn EP2274516A2 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2008/003716 WO2009135509A2 (fr) 2008-05-08 2008-05-08 Éolienne munie d'un système d'entrée d'air

Publications (1)

Publication Number Publication Date
EP2274516A2 true EP2274516A2 (fr) 2011-01-19

Family

ID=41213173

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08749404A Withdrawn EP2274516A2 (fr) 2008-05-08 2008-05-08 Éolienne munie d'un système d'entrée d'air

Country Status (2)

Country Link
EP (1) EP2274516A2 (fr)
WO (1) WO2009135509A2 (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5042603A (en) * 1990-04-23 1991-08-27 Navistar International Transportation Corp. Engine air intake apparatus
FR2797921B1 (fr) * 1999-09-01 2001-09-28 Alstom Nacelle d'eolienne constituee par la carcasse d'un generateur electrique
DE102004018758A1 (de) * 2004-04-16 2005-11-03 Klinger, Friedrich, Prof. Dr.-Ing. Turmkopf einer Windenergieanlage
DE102004046700B4 (de) * 2004-09-24 2006-08-17 Aloys Wobben Windenergieanlage mit einer Generatorkühlung
FR2902830B1 (fr) * 2006-06-27 2008-08-08 Airbus France Sas Turboreacteur pour aeronef

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2009135509A2 *

Also Published As

Publication number Publication date
WO2009135509A3 (fr) 2009-12-30
WO2009135509A2 (fr) 2009-11-12

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