JP5177959B2 - 低ソリディティターボファン - Google Patents
低ソリディティターボファン Download PDFInfo
- Publication number
- JP5177959B2 JP5177959B2 JP2006104880A JP2006104880A JP5177959B2 JP 5177959 B2 JP5177959 B2 JP 5177959B2 JP 2006104880 A JP2006104880 A JP 2006104880A JP 2006104880 A JP2006104880 A JP 2006104880A JP 5177959 B2 JP5177959 B2 JP 5177959B2
- Authority
- JP
- Japan
- Prior art keywords
- tip
- fan
- airfoil
- blade
- turbofan
- 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
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/12—Blades
- F01D5/14—Form or construction
- F01D5/141—Shape, i.e. outer, aerodynamic form
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02K—JET-PROPULSION PLANTS
- F02K3/00—Plants including a gas turbine driving a compressor or a ducted fan
- F02K3/02—Plants including a gas turbine driving a compressor or a ducted fan in which part of the working fluid by-passes the turbine and combustion chamber
- F02K3/04—Plants including a gas turbine driving a compressor or a ducted fan in which part of the working fluid by-passes the turbine and combustion chamber the plant including ducted fans, i.e. fans with high volume, low pressure outputs, for augmenting the jet thrust, e.g. of double-flow type
- F02K3/06—Plants including a gas turbine driving a compressor or a ducted fan in which part of the working fluid by-passes the turbine and combustion chamber the plant including ducted fans, i.e. fans with high volume, low pressure outputs, for augmenting the jet thrust, e.g. of double-flow type with front fan
-
- 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
- F05D2240/00—Components
- F05D2240/20—Rotors
- F05D2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
-
- 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
- F05D2250/00—Geometry
- F05D2250/70—Shape
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T50/00—Aeronautics or air transport
- Y02T50/60—Efficient propulsion technologies, e.g. for aircraft
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S416/00—Fluid reaction surfaces, i.e. impellers
- Y10S416/05—Variable camber or chord length
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Description
12 航空機
14 ターボファン
16 ファンケーシング
18 環境空気
20 ブースタ圧縮機
22 高圧圧縮機
24 環状燃焼器
26 燃焼ガス
28 高圧タービン(HPT)
30 低圧タービン(LPT)
32 動翼
34 ロータディスク
36 エーロフォイル
38 動翼台
40 ダブテール
42 正圧面
44 負圧面
46 翼端
48 前縁
50 後縁
52 流路
54 マウス
56 スロート
58 出口
60 既存のファン
62 翼端シュラウド
64 内側ケーシング
66 バイパスダクト
68 後置静翼
70 ターボファン(II)
Claims (9)
- ガスタービンエンジン(10)用のファン(14、70)であって、
環状ケーシング(16)と、
前記ケーシング(16)の内側に同軸に配置されたディスク(34)であって、自体の周縁から半径方向外側へ延びるファン動翼(32)の列を含むディスク(34)とを備え、
前記動翼(32)がそれぞれ、付根から先端(46)まで翼幅をなして半径方向に延び、反対側の前縁と後縁(48、50)の間を翼弦をなして軸方向に延びる円周方向反対側の正圧面と負圧面(42、44)とを有するエーロフォイル(36)を含み、前記エーロフォイル(36)が、空気(18)を加圧するための対応する流路(52)をその間に画定し、
前記エーロフォイル(36)がそれぞれ、1つのエーロフォイルの前記前縁(48)を次の隣接するエーロフォイルの前記負圧面(44)に円周方向に隣接して配置して、それらの間の前記流路(52)の入口であるマウス(54)を画定するように、前記付根と前記先端(46)の間で食違い角が増大する食違いを含み、前記流路(52)が、前記マウス(54)から後方へ、前記流路の流れ面積が最小となるスロート(56)まで収束し、
前記列が前記ファン動翼(32)を20枚以下かつ18枚以上含み、それぞれの先端(46)の前記前縁(48)を、円周方向に次の隣接する先端(46)の前記後縁(50)の近くに配置するために、前記エーロフォイル翼弦と円周ピッチの比によって定義されるソリディティが、前記先端(46)での大きさが半径方向中央部分の大きさより小さく、約1.2以下かつ約1.0超であることを特徴とするファン。 - 前記エーロフォイル食違いが、1つのエーロフォイル(36)の前記後縁(50)を、次の隣接するエーロフォイル(36)の前記正圧面(42)に円周方向に隣接して配置して、それらの間の前記流路(52)の出口(58)を画定し、
前記エーロフォイル先端(46)の前記前縁(48)と、円周方向に次の隣接する先端(46)の前記後縁(50)とにより画成される流路の幅が、前記マウス(54)から前記スロート(56)まで収束し、前記スロート(56)から前記出口(58)まで発散するように変化することを特徴とする請求項1記載のファン。 - 前記エーロフォイル先端の前記収束−発散流路(52)が、前記空気の超音速流を前記前縁(48)で受け取り、続いて流路内に衝撃を生じ、前記スロート(56)から後方に亜音速拡散を生み出すように寸法決めされ構成されたことを特徴とする請求項2記載のファン。
- 前記翼端ソリディティが翼弦と前記ファン動翼(32)の直径との比の関数であり、前記比が、先端(46)の前記前縁(48)と円周方向に次の隣接する先端(46)の前記後縁(50)との間で、隣接するエーロフォイルの間の円周方向のすき間を提供する値を有することを特徴とする請求項3記載のファン。
- 前記ケーシング(16)の内側に取り付けられ、前記エーロフォイル先端(46)を取り囲み、前記エーロフォイル先端(46)の近くに隣接して配置されて、前記エーロフォイル先端(46)との間に、対応した小さな先端クリアランスを画定する平滑な環状先端シュラウド(62)と、
前記ケーシング(16)から半径方向内側へ延び、前記動翼列から後方に間隔を置いて配置され、その数が、前記ファン動翼(32)の数の2倍超である、前記ファンからの騒音を低減させるための後置静翼(68)の列と、
をさらに備えたことを特徴とする請求項4記載のファン。 - 前記動翼列がファン動翼(32)を20枚だけ含み、
隣接するエーロフォイル(36)が、前記先端(46)の近くに前記円周すき間を有し、その半径方向内側に、それらの間の円周方向の重なりを有し、その半径方向内側の前記付根の近くに、円周すき間をさらに有することを特徴とする請求項5記載のファン。 - 前記先端(46)の前記ソリディティが約1.17であることを特徴とする請求項6記載のファン。
- 前記動翼列がファン動翼(32)を18枚だけ含み、
隣接するエーロフォイル(36)間の前記円周すき間がその付根から先端(46)まで延びていることを特徴とする請求項5記載のファン。 - 前記先端(46)の前記ソリディティが約1.05であることを特徴とする請求項8記載のファン。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/100,752 | 2005-04-07 | ||
US11/100,752 US7374403B2 (en) | 2005-04-07 | 2005-04-07 | Low solidity turbofan |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2006291955A JP2006291955A (ja) | 2006-10-26 |
JP5177959B2 true JP5177959B2 (ja) | 2013-04-10 |
Family
ID=36297341
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2006104880A Expired - Fee Related JP5177959B2 (ja) | 2005-04-07 | 2006-04-06 | 低ソリディティターボファン |
Country Status (3)
Country | Link |
---|---|
US (1) | US7374403B2 (ja) |
EP (1) | EP1712738B1 (ja) |
JP (1) | JP5177959B2 (ja) |
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US7374403B2 (en) | 2008-05-20 |
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US20060228206A1 (en) | 2006-10-12 |
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