CN111664122A - Stator guide blade at outlet of outer duct - Google Patents

Stator guide blade at outlet of outer duct Download PDF

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Publication number
CN111664122A
CN111664122A CN202010505409.4A CN202010505409A CN111664122A CN 111664122 A CN111664122 A CN 111664122A CN 202010505409 A CN202010505409 A CN 202010505409A CN 111664122 A CN111664122 A CN 111664122A
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CN
China
Prior art keywords
stator guide
blade
outer duct
outlet
guide vane
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.)
Pending
Application number
CN202010505409.4A
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Chinese (zh)
Inventor
郑文涛
蒋永松
白志刚
赵航
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AECC Shenyang Engine Research Institute
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AECC Shenyang Engine Research Institute
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Filing date
Publication date
Application filed by AECC Shenyang Engine Research Institute filed Critical AECC Shenyang Engine Research Institute
Priority to CN202010505409.4A priority Critical patent/CN111664122A/en
Publication of CN111664122A publication Critical patent/CN111664122A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/52—Casings; Connections of working fluid for axial pumps
    • F04D29/54—Fluid-guiding means, e.g. diffusers
    • F04D29/541—Specially adapted for elastic fluid pumps
    • F04D29/542—Bladed diffusers
    • F04D29/544—Blade shapes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
    • F04D29/663—Sound attenuation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
    • F04D29/667—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by influencing the flow pattern, e.g. suppression of turbulence
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • 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
    • F05D2220/00—Application
    • F05D2220/30—Application in turbines
    • F05D2220/36—Application in turbines specially adapted for the fan of turbofan engines

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The utility model belongs to the technical field of the design of making an uproar falls in big culvert ratio turbofan engine, concretely relates to outer duct export stator guide vane, this outer duct export stator guide vane is on the basis of outer duct export stator guide vane's position usually, with the direction of rotation skew of apex position along fan rotor blade, increase outer duct export stator guide vane's circumference positive inclination, in order to optimize outer duct export stator guide vane, reduce the noise that outer duct export stator guide vane produced is swept to fan rotor blade wake, with the blade root position along fan rotor blade's direction of rotation's reverse slope simultaneously, pneumatic performance with this assurance fan is not worsened.

Description

Stator guide blade at outlet of outer duct
Technical Field
The application belongs to the technical field of noise reduction design of a turbofan engine with a large bypass ratio, and particularly relates to an outer bypass outlet stator guide vane.
Background
The noise of the turbofan engine with the large bypass ratio is mainly caused by the fact that the tail trace of a fan rotor blade sweeps an outer bypass outlet stator guide blade, the outer bypass outlet stator guide blade is arranged at the outlet of an outer bypass of the engine and used for converting the flow direction of air flow in the outer bypass from the tangential direction to the axial direction, the mixing loss of the outer bypass air flow is reduced, the efficiency of the fan is improved, and the fan is generally designed to be straight blades along the radial direction.
In order to reduce the noise generated by sweeping the wake of the fan rotor blade by the stator guide blade at the outlet of the outer duct, the stator guide blade at the outlet of the outer duct needs to be optimized, and the method mainly comprises the following steps:
1) increasing the circumferential positive inclination angle of the stator guide blade at the outlet of the outer duct, namely keeping the position of the blade root of the stator guide blade at the outlet of the outer duct unchanged, and offsetting the blade tip of the stator guide blade at the outlet of the outer duct along the rotation direction of the fan rotor blade, as shown by a solid line part in fig. 1, wherein the offset angle of the blade tip of the stator guide blade at the outlet of the outer duct along the rotation direction of the fan rotor blade is Gamma1, and the technical scheme easily causes the deterioration of the aerodynamic performance of the fan;
2) the blade root position of the stator guide blade at the outlet of the outer duct is kept unchanged, the blade tip position of the stator guide blade at the outlet of the outer duct is shifted towards the direction far away from the fan rotor blade, so that the axial swept angle of the stator guide blade is increased from alpha1 to alpha2, as shown by a solid line part in FIG. 2, the technical scheme enables the axial length of the stator guide blade at the outlet of the outer duct along the outer duct to be increased, the arrangement of other related parts is influenced, even the length of an engine outer casing needs to be correspondingly increased, the weight of the engine is increased, and the requirement of weight reduction of the engine is not in accordance with the requirement of the current airplane;
3) if the blade root at the blade root of the stator guide blade at the outer duct outlet is too close to the fan rotor blade, the trail of the swept blade generated by the fan rotor is not sufficiently attenuated when reaching the stator guide blade at the outer duct outlet, so that the strength is kept high, the noise reduction effect caused by the increased swept angle can be weakened or even counteracted, and the amplitude is difficult to grasp.
The present application has been made in view of the above-mentioned technical drawbacks.
It should be noted that the above background disclosure is only for the purpose of assisting understanding of the inventive concept and technical solutions of the present invention, and does not necessarily belong to the prior art of the present patent application, and the above background disclosure should not be used for evaluating the novelty and inventive step of the present application without explicit evidence to suggest that the above content is already disclosed at the filing date of the present patent application.
Disclosure of Invention
It is an object of the present application to provide an bypass exit stator vane that overcomes or alleviates at least one of the technical disadvantages of the known prior art.
The technical scheme of the application is as follows:
a stator guide vane for an outer duct outlet has a tip portion that is offset in the rotational direction of a fan rotor blade and a root portion that is inclined in the reverse direction of the rotational direction of the fan rotor blade.
In accordance with at least one embodiment of the present application, in the above-described bypass exit stator vanes, Gamma1 ═ 10;
gamma2 ═ 20; wherein the content of the first and second substances,
gamma1 is the angle of the tip part of the stator guide blade at the outlet of the outer duct, which is deviated along the rotating direction of the fan rotor blade;
gamma2 is the angle of inclination of the blade root of the stator guide blade at the outlet of the bypass in the direction opposite to the direction of rotation of the fan rotor blade.
According to at least one embodiment of the present application, in the above-described bypass outlet stator vanes, H1/H is 0.4; wherein the content of the first and second substances,
h is the height of the outer duct;
h1 is the distance from the intersection part of the stator guide vane of the outlet of the outer duct and the axial direction of the outer duct before the change of the blade tip part and the blade root part to the blade root of the stator guide vane of the outlet of the outer duct.
According to at least one embodiment of the present application, in the above-described outer-duct outlet stator guide vane, a tip portion of the outer-duct outlet stator guide vane is inclined in a direction close to the fan rotor blade.
According to at least one embodiment of the present application, in the above-described bypass outlet stator vanes, Alpha2 is 20; wherein the content of the first and second substances,
alpha2 is the angle that the apex position of the stator guide blade of the outer duct outlet inclines to the direction close to the fan rotor blade.
According to at least one embodiment of the present application, in the above-described bypass outlet stator guide vane, a blade root portion of the bypass outlet stator guide vane is inclined in a direction away from the fan rotor blade.
In accordance with at least one embodiment of the present application, in the above-described bypass outlet stator vanes, Beta2 ═ 20; wherein the content of the first and second substances,
beta2 is the angle at which the root of the outer duct outlet stator guide vane is angled away from the fan rotor blades.
According to at least one embodiment of the present application, in the above-described bypass outlet stator vane, H2/H is 0.3; wherein the content of the first and second substances,
h is the height of the outer duct;
h2 is the distance from the intersection part of the stator guide vane of the outlet of the outer duct and the blade tip part and the blade root part variation front edge which are vertical to the axial direction of the outer duct to the blade root of the stator guide vane of the outlet of the outer duct.
The application has at least the following beneficial technical effects:
the outer duct outlet stator guide blade has the advantages that the blade tip position deviates along the rotating direction of the fan rotor blade on the basis of the position of the common outer duct outlet stator guide blade, the circumferential positive inclination angle of the outer duct outlet stator guide blade is increased, the outer duct outlet stator guide blade is optimized, the noise generated by the fan rotor blade trailing sweeping the outer duct outlet stator guide blade is reduced, and meanwhile, the blade root position inclines in the reverse direction of the rotating direction of the fan rotor blade, so that the pneumatic performance of a fan is guaranteed not to be deteriorated.
Drawings
FIG. 1 is a schematic illustration of the present addition of a circumferential positive pitch angle of an outer duct outlet stator vane;
FIG. 2 is a schematic view of a prior art bypass exit stator guide vane having a root portion that is positioned to be constant and a tip portion that is offset in a direction away from the fan rotor blade;
FIG. 3 is a schematic view of a prior art bypass exit stator guide vane having a tip portion that is positioned to be stationary and a root portion that is offset toward a direction of approaching a fan rotor blade;
FIG. 4 is a schematic view of an outer duct outlet stator vane provided in an embodiment of the present application taken perpendicular to the outer duct direction;
FIG. 5 is a schematic view of an outer duct outlet stator guide vane provided in an embodiment of the present application, in an outer duct axial direction;
FIG. 6 is a pressure pulsation cloud of the suction and pressure sides of a typical bypass exit stator vane;
FIG. 7 is a pressure pulsation cloud of the suction and pressure surfaces of the stator vanes at the outlet of the bypass according to an embodiment of the present disclosure;
FIG. 8 is a graph comparing the bypass flow-to-pressure ratio aerodynamic characteristics of an outer duct outlet stator vane provided in embodiments of the present application with conventional outer duct outlet stator vanes;
wherein:
h is the height of the outer duct;
h1 is the distance from the intersection part of the stator guide blade at the outlet of the outer duct and the axial direction of the outer duct before the change of the blade tip part and the blade root part of the stator guide blade at the outlet of the outer duct to the blade root of the stator guide blade at the outlet of the outer duct;
h2 is the distance from the intersection part of the stator guide blade at the outlet of the outer duct and the blade tip part thereof, and the variation front edge of the blade root part to the blade root of the stator guide blade at the outlet of the outer duct, wherein the intersection part is vertical to the axial direction of the outer duct;
gamma1 is the angle of the tip part of the stator guide blade at the outlet of the outer duct, which is deviated along the rotating direction of the fan rotor blade;
gamma2 is the angle of the blade root of the stator guide blade at the outlet of the outer duct inclining along the reverse direction of the rotation direction of the fan rotor blade;
alpha1 is the angle that the tip part of the stator guide blade of the general outer duct outlet inclines to the direction close to the fan rotor blade;
alpha2 is the angle that the tip part of the stator guide blade at the outlet of the outer duct inclines or deviates to the direction close to the fan rotor blade;
beta1 is the angle at which the root of the conventional bypass outlet stator guide vane is inclined away from the fan rotor blade
Beta2 is the angle that the blade root part of the stator guide blade at the outlet of the outer duct inclines to the direction far away from the fan rotor blade; wherein the content of the first and second substances,
the general extraducted outlet stator guide blade means that the blade tip and the blade root of the general extraducted outlet stator guide blade are arranged in a general mode, and deviation in any mode is not carried out so as to increase a circumferential positive inclination angle or increase an axial sweep angle.
Detailed Description
In order to make the technical solutions and advantages of the present application clearer, the technical solutions of the present application will be further clearly and completely described in the following detailed description with reference to the accompanying drawings, and it should be understood that the specific embodiments described herein are only some of the embodiments of the present application, and are only used for explaining the present application, but not limiting the present application. It should be noted that, for convenience of description, only the parts related to the present application are shown in the drawings, other related parts may refer to general designs, and the embodiments and technical features in the embodiments in the present application may be combined with each other to obtain a new embodiment without conflict.
In addition, unless otherwise defined, technical or scientific terms used in the description of the present application shall have the ordinary meaning as understood by one of ordinary skill in the art to which the present application belongs. The terms "upper", "lower", "left", "right", "center", "vertical", "horizontal", "inner", "outer", and the like used in the description of the present application, which indicate orientations, are used only to indicate relative directions or positional relationships, and do not imply that the devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and when the absolute position of the object to be described is changed, the relative positional relationships may be changed accordingly, and thus, should not be construed as limiting the present application. The use of "first," "second," "third," and the like in the description of the present application is for descriptive purposes only to distinguish between different components and is not to be construed as indicating or implying relative importance. The use of the terms "a," "an," or "the" and similar referents in the context of describing the application is not to be construed as an absolute limitation on the number, but rather as the presence of at least one. The use of the terms "comprising" or "including" and the like in the description of the present application is intended to indicate that the element or item preceding the term covers the element or item listed after the term and its equivalents, without excluding other elements or items.
Further, it is noted that, unless expressly stated or limited otherwise, the terms "mounted," "connected," and the like are used in the description of the invention in a generic sense, e.g., connected as either a fixed connection or a removable connection or integrally connected; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, or they may be connected through the inside of two elements, and those skilled in the art can understand their specific meaning in this application according to the specific situation.
The present application is described in further detail below with reference to fig. 1 to 8.
The offset and the tilt of the blade tip and the blade root of the outer duct outlet stator guide blade in the following embodiments refer to offset and tilt based on the position of the blade tip and the blade root of a general outer duct outlet stator guide blade, wherein the offset and the tilt angle of the blade tip and the blade root of the outer duct outlet stator guide blade refer to the actual offset and the tilt angle of the blade tip and the blade root of the outer duct outlet stator guide blade, which can be understood with reference to fig. 1 to 5.
A stator guide vane for an outer duct outlet has a tip portion that is offset in the rotational direction of a fan rotor blade and a root portion that is inclined in the reverse direction of the rotational direction of the fan rotor blade.
For the outer-duct outlet stator guide vane disclosed in the above embodiments, it can be understood by those skilled in the art that, on the basis of the position of the general outer-duct outlet stator guide vane, the tip portion is shifted along the rotation direction of the fan rotor vane, that is, the circumferential positive inclination angle of the outer-duct outlet stator guide vane is increased, so as to optimize the outer-duct outlet stator guide vane, reduce the noise generated when the tail of the fan rotor vane sweeps the outer-duct outlet stator guide vane, and at the same time, the root portion of the outer-duct outlet stator guide vane is fixed, and only the root portion is tilted in the reverse direction of the rotation direction of the fan rotor vane, so as to ensure that the aerodynamic performance of the fan is not deteriorated.
In some alternative embodiments, in the above-described outer duct outlet stator vanes, Gamma1 ═ 10;
gamma2 ═ 20; wherein the content of the first and second substances,
gamma1 is the angle of the tip part of the stator guide blade at the outlet of the outer duct, which is deviated along the rotating direction of the fan rotor blade;
gamma2 is the angle of inclination of the blade root of the stator guide blade at the outlet of the bypass in the direction opposite to the direction of rotation of the fan rotor blade.
In some alternative embodiments, in the above-described outer duct outlet stator vanes, H1/H is 0.4; wherein the content of the first and second substances,
h is the height of the outer duct;
h1 is the distance from the intersection of the stator guide vane of the bypass outlet and the axial direction of the bypass along the axial direction of the bypass to the blade root of the stator guide vane of the bypass outlet, i.e. the distance from the intersection of the stator guide vane of the bypass outlet and the stator guide vane of the bypass outlet in the axial direction of the bypass to the blade root, which can be seen in fig. 4.
In some alternative embodiments, in the above-mentioned outer duct outlet stator guide vane, a tip portion of the outer duct outlet stator guide vane is inclined in a direction close to the fan rotor blade; the blade root part of the stator guide blade at the outlet of the outer duct inclines towards the direction far away from the fan rotor blade.
For the outer-duct outlet stator guide vane disclosed in the above embodiments, it will be understood by those skilled in the art that, based on the position of the general outer-duct outlet stator guide vane, the tip portion of the outer-duct outlet stator guide vane is tilted away from the fan rotor vane to increase the tilt angle of the tip portion of the outer-duct outlet stator guide vane toward the direction close to the fan rotor vane, that is, to increase the axial sweep angle, to optimize the outer-duct outlet stator guide vane to reduce the noise generated by the trailing of the fan rotor vane sweeping the outer-duct outlet stator guide vane, and to increase the tilt angle of the tip portion of the outer-duct outlet stator guide vane toward the direction close to the fan rotor vane in a manner of tilting the tip portion of the general outer-duct outlet stator guide vane toward the direction close to the fan rotor vane, and the tip portion of the outer-duct outlet stator guide vane is not shifted in the axial direction of the outer duct, the axial length of the bypass cannot be increased, and the weight of the engine cannot be increased.
With respect to the stator guide vane of the bypass outlet disclosed in the above embodiments, it can be further understood by those skilled in the art that the blade root portion of the stator guide vane is inclined in the direction away from the fan rotor blade at the position of the normal bypass outlet stator guide vane to counteract the deterioration of the aerodynamic performance of the fan caused by the tip portion of the stator guide vane of the bypass outlet inclined in the direction close to the fan rotor blade, and the blade root portion of the stator guide vane of the bypass outlet is not shifted in the axial direction of the bypass compared to the position of the blade root portion of the normal bypass outlet stator guide vane, and the stator guide vane of the bypass outlet has a substantially S-shape in the axial direction view of the bypass, and refer to fig. 5 in particular.
In some alternative embodiments, in the above-described outer duct outlet stator vanes, Alpha2 ═ 20; wherein the content of the first and second substances,
alpha2 is the angle that the tip part of the stator guide blade at the outlet of the outer duct inclines to the direction close to the fan rotor blade;
the angle Alpha1 that the tip position of the stator guide blade of the outer duct outlet inclines to the direction close to the fan rotor blade is usually 10 at most.
In some alternative embodiments, among the above-described outer duct outlet stator vanes, Beta2 ═ 20; wherein the content of the first and second substances,
beta2 is the angle that the blade root part of the stator guide blade at the outlet of the outer duct inclines to the direction far away from the fan rotor blade;
in general, the angle Beta1 at which the root of the stator guide vane of the bypass outlet is inclined in the direction away from the fan rotor blade is at most 10 °.
In some alternative embodiments, in the above-described outer duct outlet stator vanes, H2/H is 0.3; wherein the content of the first and second substances,
h is the height of the outer duct;
h2 is the distance from the intersection of the stator guide vane of the bypass outlet and the vane tip and the variation front edge of the vane root perpendicular to the axial direction of the bypass outlet to the vane root of the stator guide vane of the bypass outlet, that is, the distance from the intersection of the stator guide vane of the bypass outlet and the stator guide vane of the bypass outlet disclosed in the present application along the view perpendicular to the axial direction of the bypass outlet to the vane root, and it can be specifically seen in fig. 5.
The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
In order to verify the capability of the stator guide vane at the outer duct outlet provided by the embodiment of the application for reducing the noise generated by the tail of the fan rotor blade sweeping the stator guide vane at the outer duct outlet and the influence of the tail on the aerodynamic performance of the fan, the following verification is carried out by adopting computational fluid dynamics software:
unsteady numerical simulation is performed on a general outer duct outlet stator guide blade and an outer duct outlet stator guide blade provided by the embodiment of the application by computational fluid dynamics software to respectively obtain pulsating pressures of a suction surface and a pressure surface, as shown in fig. 6-7, wherein dark colors indicate that pressure pulsation is large, light colors indicate that pressure pulsation is small, sound is caused by pressure pulsation, the pressure pulsation is large and means that sound is large, the pressure pulsation is small, fig. 6 shows a pressure pulsation cloud chart of the suction surface and the pressure surface of the general outer duct outlet stator guide blade, and fig. 7 shows a pressure pulsation cloud chart of the suction surface and the pressure surface of the outer duct outlet stator guide blade provided by the embodiment of the application, and compared with fig. 6, the area of a light color area in fig. 7 is large, that is, the pressure pulsation of the suction surface and the pressure surface of the outer duct outlet stator guide blade provided by the embodiment of the application is compared with the suction surface and the pressure surface of the general outer duct outlet stator guide blade, The pressure pulsation of the pressure surface is small, and the noise generated by sweeping the wake of the fan rotor blade with the stator guide blade at the outlet of the outer duct is reduced.
CFD numerical simulation is carried out on a common outer duct outlet stator guide vane and an outer duct outlet stator guide vane provided by the embodiment of the application by adopting computational fluid dynamics software, a comparison graph of the outer duct outlet stator guide vane and the outer duct outlet stator guide vane is obtained, wherein a solid line represents the outer duct flow-pressure ratio aerodynamic characteristic of the common outer duct outlet stator guide vane, a dotted line represents the outer duct flow-pressure ratio aerodynamic characteristic of the outer duct outlet stator guide vane provided by the embodiment of the application, the dotted line and the leftmost point of the solid line represent corresponding numerical instability boundaries, the leftmost point of the dotted line in the FIG. 8 is more left than the leftmost point of the dotted line, namely, the usable working range of the outer duct outlet stator guide vane provided by the embodiment of the application is larger than that of the common outer duct outlet stator guide vane, the pneumatic performance is better.
Having thus described the present application in connection with the preferred embodiments illustrated in the accompanying drawings, it will be understood by those skilled in the art that the scope of the present application is not limited to those specific embodiments, and that equivalent modifications or substitutions of related technical features may be made by those skilled in the art without departing from the principle of the present application, and those modifications or substitutions will fall within the scope of the present application.

Claims (8)

1. The stator guide blade is characterized in that the blade tip part of the stator guide blade is offset along the rotating direction of the fan rotor blade, and the blade root part of the stator guide blade is inclined along the reverse direction of the rotating direction of the fan rotor blade.
2. The unducted exit stator guide vane of claim 1,
Gamma1＝10；
gamma2 ═ 20; wherein the content of the first and second substances,
gamma1 is the angle of the tip part of the stator guide blade at the outlet of the outer duct, which is deviated along the rotating direction of the fan rotor blade;
gamma2 is the angle of the blade root of the stator guide blade at the outlet of the bypass duct along the reverse direction of the rotation direction of the fan rotor blade.
3. The unducted exit stator guide vane of claim 1,
H1/H is 0.4; wherein the content of the first and second substances,
h is the height of the outer duct;
h1 is the distance from the intersection of the stator guide vane of the outer duct outlet and the axial direction of the outer duct to the blade root of the stator guide vane of the outer duct outlet.
4. The unducted exit stator guide vane of claim 1,
the blade tip part of the stator guide blade at the outlet of the outer duct inclines towards the direction close to the fan rotor blade.
5. The unducted exit stator guide vane of claim 4,
alpha 2-20 °; wherein the content of the first and second substances,
alpha2 is an angle at which the tip part of the stator guide vane at the outlet of the bypass is inclined in the direction approaching the fan rotor blade.
6. The unducted exit stator guide vane of claim 4,
and the blade root part of the stator guide blade at the outlet of the outer duct inclines towards the direction far away from the fan rotor blade.
7. The unducted exit stator guide vane of claim 5,
beta 2-20 °; wherein the content of the first and second substances,
beta2 is the angle at which the root of the bypass exit stator vanes is angled away from the fan rotor blades.
8. The unducted exit stator guide vane of claim 6,
H2/H is 0.3; wherein the content of the first and second substances,
h is the height of the outer duct;
h2 is the distance from the intersection part of the stator guide vane of the outer duct outlet and the blade tip part thereof, and the variation front edge of the blade root part to the blade root of the stator guide vane of the outer duct outlet, wherein the intersection part is vertical to the axial direction of the outer duct.
CN202010505409.4A 2020-06-05 2020-06-05 Stator guide blade at outlet of outer duct Pending CN111664122A (en)

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Application Number Priority Date Filing Date Title
CN202010505409.4A CN111664122A (en) 2020-06-05 2020-06-05 Stator guide blade at outlet of outer duct

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Application Number Priority Date Filing Date Title
CN202010505409.4A CN111664122A (en) 2020-06-05 2020-06-05 Stator guide blade at outlet of outer duct

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Publication Number Publication Date
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WO2009103528A2 (en) * 2008-02-19 2009-08-27 Paolo Pietricola Parametric blades with either sinusoidal lean or airfoils with arcs of ellipses
WO2011040241A1 (en) * 2009-09-29 2011-04-07 株式会社日立製作所 Turbine stator vane designing method, turbine stator vane, and steam turbine device using turbine stator vane
CN104895839A (en) * 2015-04-22 2015-09-09 南京航空航天大学 Axial-flow compressor stator blade system with adjustable first and second half of segments and working method thereof
CN206017269U (en) * 2016-09-05 2017-03-15 上海电气燃气轮机有限公司 Complex bend stator blade for multi stage axial flow compressor

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050008494A1 (en) * 2003-03-28 2005-01-13 Ishikawajima-Harima Heavy Industries Co., Ltd. Aircraft engine, fan thereof and fan stator vane thereof
CA2613766A1 (en) * 2006-12-22 2008-06-22 General Electric Company Gas turbine engines including lean stator vanes and methods of assembling the same
DE102008055824A1 (en) * 2007-11-09 2009-05-14 Alstom Technology Ltd. steam turbine
WO2009103528A2 (en) * 2008-02-19 2009-08-27 Paolo Pietricola Parametric blades with either sinusoidal lean or airfoils with arcs of ellipses
WO2011040241A1 (en) * 2009-09-29 2011-04-07 株式会社日立製作所 Turbine stator vane designing method, turbine stator vane, and steam turbine device using turbine stator vane
CN104895839A (en) * 2015-04-22 2015-09-09 南京航空航天大学 Axial-flow compressor stator blade system with adjustable first and second half of segments and working method thereof
CN206017269U (en) * 2016-09-05 2017-03-15 上海电气燃气轮机有限公司 Complex bend stator blade for multi stage axial flow compressor

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