JP6551892B2 - 音響ライナーおよび音響ライナーの入口を成形する方法 - Google Patents
音響ライナーおよび音響ライナーの入口を成形する方法 Download PDFInfo
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- JP6551892B2 JP6551892B2 JP2017542830A JP2017542830A JP6551892B2 JP 6551892 B2 JP6551892 B2 JP 6551892B2 JP 2017542830 A JP2017542830 A JP 2017542830A JP 2017542830 A JP2017542830 A JP 2017542830A JP 6551892 B2 JP6551892 B2 JP 6551892B2
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- Japan
- Prior art keywords
- perforated sheet
- acoustic liner
- coating
- perforations
- inlet
- 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.)
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Landscapes
- Engineering & Computer Science (AREA)
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- Laminated Bodies (AREA)
Description
コーティング40は、限定はしないが、フルオロポリマー、ポリマー、疎水性、疎油性、低摩擦性、または耐浸食性のコーティングのうちの少なくとも1つを含む、任意の適切な材料から形成することができる。他の市販のコーティング材料も可能である。非限定的な例として、ナフサまたはキシレンを用いて10%まで薄くしたシロキサンベースのナノ複合スプレー可能なコーティングを利用することができる。さらに、コーティング40は、限定はしないが、コーティング40がスプレーコーティング40または蒸着コーティング40であってもよいことを含む、任意の適切な方法で適用することができる。穿孔シートにコーティング40を適用することによって穿孔30を成形して、音響ライナーを横切る空気流の方向に沿って入口に至る減少する断面積を有するコーティング40の一部を形成することができること、および、これを任意の適切な方法で行うことができることが理解されよう。例えば、コーティング40は、穿孔シート24に対して鋭角45を形成するように、穿孔シート24に対する方向にスプレーすることができる。例えば、鋭角は45度以下であってもよい。図示する例では、スプレー47は45度の鋭角でスプレーされるものとして図示されている。コーティング40は、従来のスプレー装置を使用してスプレー処理で適用することができる。コーティング40の厚さは、特定の用途および使用されるコーティング材料の種類に依存するが、一般に、約0.001インチ〜0.030インチの範囲の厚さが使用される。所望の入口形状を達成する最も薄いコーティングを利用して重量/コストを最小限に抑えることができる。種々のスプレーパラメータ、コーティング数、および適用角度を利用する任意の適切なスプレー技術を使用することができる。所望のスプレー特性および得られる幾何学的形状を達成するために、コーティングを高温で薄くしおよび/または硬化させることができる。音響性能を向上させることに加えて、コーティング40は、腐食、侵食、衝撃または摩耗に対する改善された耐性を含む複数の目的に役立ち、氷結防止または摩擦低減特性を示す。穿孔30の側壁32は、何らかのコーティング40が適用されてもよく、穿孔30の側壁32上のコーティング40は、穿孔30の断面積を減少させることができる。穿孔30は、スプレーの堆積による直径の減少を可能にするために、意図的に大きめにすることができる。
12 タービンエンジン
13 ファン組立体
14 ナセル
16 環状バイパスダクト
17 入口部
18 矢印
19 入口
20 環状音響パネル
21 ファン部
22 開放フレームワーク
23 環状ファンケース
24 前方穿孔シート、複合穿孔シート
25 後方ダクト
26 無孔の裏打ちシート
28 音響共振器セル、ハニカムセル
30 穿孔
32 側壁
40 コーティング
42 減少する厚さを有する部分
44 貫通空気流
46 半径
47 スプレー
48 移行角
49 上面
50 コーティング
52 減少する厚さを有する部分
60 コーティング
62 減少する厚さを有する部分
70 コーティング
72 減少する厚さを有する部分
Claims (20)
- タービンエンジン(12)のための音響ライナーであって、
開放面を有する一組の分割されたキャビティを含む支持層と、
対応する入口(19)を有する一組の穿孔(30)を含む穿孔シート(24)であって、穿孔(30)が前記開放面と重なる関係にあり、音響共振器セル(28)を画定する一対の穿孔(30)およびキャビティを形成するように前記支持層に動作可能に結合された穿孔シート(24)と、
前記穿孔シート(24)に適用され、前記入口(19)の貫通空気流(44)に対して少なくとも上流側に、前記入口(19)までの移行領域を画定するための減少する厚さを有する部分(42、52、62、72)を有するコーティング(40、50、60、70)と、を含み、
前記穿孔シート(24)の上面(49)に沿った前記穿孔(30)の断面積が、前記穿孔シート(24)の厚さに渡って一定である、
音響ライナー。 - 前記減少する厚さは、連続的、直線的、又は段階的に減少する厚さを含む、請求項1に記載の音響ライナー。
- 前記支持層の前記穿孔シート(24)とは反対側に前記支持層によって支持された無孔シート(26)をさらに含む、請求項1または2に記載の音響ライナー。
- 前記減少する厚さを有する前記部分(42、52、62、72)は、前記入口(19)の上流に半径(46)を形成する、請求項1に記載の音響ライナー。
- 前記減少する厚さを有する部分(42、52、62、72)は、前記入口(19)の上流にテーパを形成する、請求項1に記載の音響ライナー。
- 前記減少する厚さを有する部分(42、52、62、72)は、前記入口(19)の上流に面取りを形成する、請求項1に記載の音響ライナー。
- 前記穿孔(30)は、直径が0.005〜0.010インチである、請求項1に記載の音響ライナー。
- 前記穿孔(30)は、前記穿孔シート(24)の上面に対して前記入口(19)で約90度の移行角(48)を有し、前記減少する厚さを有する部分(42、52、62、72)は、前記移行角(48)を90度より大きく増加させる、請求項7に記載の音響ライナー。
- 前記穿孔シート(24)は前記支持層上に支持される、請求項1に記載の音響ライナー。
- 前記穿孔シート(24)は複合材料を含む、請求項1に記載の音響ライナー。
- 前記コーティング(40、50、60、70)は、フルオロポリマー、ポリマー、疎水性、疎油性、低摩擦性、または耐浸食性のコーティング(40、50、60、70)のうちの少なくとも1つを含む、請求項1に記載の音響ライナー。
- 前記コーティング(40、50、60、70)は、スプレーコーティングまたは蒸着コーティングのうちの少なくとも一方である、請求項11に記載の音響ライナー。
- タービンエンジン(12)のための音響ライナーであって、
開放面を有する一組の分割されたキャビティを含む支持層と、
前記支持層の裏面にあって、前記裏面上の前記開放面を閉鎖する無孔シート(26)と、
前記支持層の前面の複合材料を含む穿孔シート(24)であって、音響共振器セル(28)を画定する一対の穿孔(30)およびキャビティを形成するために、前記支持層の前記前面の前記開放面と重なる関係にある、対応する入口(19)を有する一組の穿孔(30)を含む複合穿孔シート(24)と、
前記穿孔シート(24)に適用され、前記入口(19)の貫通空気流(44)に対して少なくとも上流側に、前記入口(19)までの移行領域を画定するための減少する厚さを有する部分(42、52、62、72)を有するコーティング(40、50、60、70)と、を含み、
前記穿孔シート(24)の上面(49)に沿った前記穿孔(30)の断面積が、前記穿孔シート(24)の厚さに渡って一定である、音響ライナー。 - 前記穿孔シート(24)の厚さに渡って、前記穿孔(30)の側壁(32)にコーティングが配置される、請求項1乃至13のいずれかに記載の音響ライナー。
- 前記減少する厚さは、連続的、直線的、又は段階的に減少する厚さを含む、請求項1乃至14のいずれかに記載の音響ライナー。
- 前記減少する厚さを有する前記部分は、半径(46)、テーパ、および面取りのうちの1つを形成する、請求項1乃至15のいずれかに記載の音響ライナー。
- 音響ライナーの入口(19)を成形する方法であって、
開放面を有する一組の分割されたキャビティを有する支持層を提供するステップと、
前記一組の分割されたキャビティ内のキャビティに対応する一組の穿孔(30)を有する穿孔シート(24)を提供するステップと、
前記穿孔シート(24)にコーティング(40、50、60、70)を適用し、前記穿孔(30)に至る移行領域を画定するために、前記穿孔(30)に至る減少する断面を有する前記コーティング(40、50、60、70)の一部を形成するステップと、を含み、
前記穿孔シート(24)の上面(49)に沿った前記穿孔(30)の断面積が、前記穿孔シート(24)の厚さに渡って一定である、方法。 - 前記コーティング(40、50、60、70)は、前記穿孔シート(24)に対して鋭角を形成するように、前記穿孔シート(24)に対してある方向にスプレー(47)される、請求項17に記載の方法。
- 前記穿孔シート(24)の厚さに渡って、前記穿孔(30)の側壁(32)にコーティングを配置するステップを含む、請求項17または18に記載の方法。
- 前記鋭角は45度以下である、請求項18に記載の方法。
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2015
- 2015-02-18 JP JP2017542830A patent/JP6551892B2/ja active Active
- 2015-02-18 EP EP15729270.7A patent/EP3259125A1/en active Pending
- 2015-02-18 WO PCT/US2015/016314 patent/WO2016133501A1/en active Application Filing
- 2015-02-18 US US15/550,800 patent/US10563578B2/en active Active
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CN107407205A (zh) | 2017-11-28 |
US10563578B2 (en) | 2020-02-18 |
WO2016133501A1 (en) | 2016-08-25 |
EP3259125A1 (en) | 2017-12-27 |
JP2018512530A (ja) | 2018-05-17 |
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