JP4268886B2 - 層流システムのための穿孔スキン構造 - Google Patents
層流システムのための穿孔スキン構造 Download PDFInfo
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- JP4268886B2 JP4268886B2 JP2003586022A JP2003586022A JP4268886B2 JP 4268886 B2 JP4268886 B2 JP 4268886B2 JP 2003586022 A JP2003586022 A JP 2003586022A JP 2003586022 A JP2003586022 A JP 2003586022A JP 4268886 B2 JP4268886 B2 JP 4268886B2
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C21/00—Influencing air flow over aircraft surfaces by affecting boundary layer flow
- B64C21/02—Influencing air flow over aircraft surfaces by affecting boundary layer flow by use of slot, ducts, porous areas or the like
- B64C21/06—Influencing air flow over aircraft surfaces by affecting boundary layer flow by use of slot, ducts, porous areas or the like for sucking
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C2230/00—Boundary layer controls
- B64C2230/04—Boundary layer controls by actively generating fluid flow
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C2230/00—Boundary layer controls
- B64C2230/06—Boundary layer controls by explicitly adjusting fluid flow, e.g. by using valves, variable aperture or slot areas, variable pump action or variable fluid pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C2230/00—Boundary layer controls
- B64C2230/22—Boundary layer controls by using a surface having multiple apertures of relatively small openings other than slots
-
- 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
- Y02T50/10—Drag reduction
Description
(a)全体の層流制御効率が非常に影響されやすい、不可避の穴又は機械加工の不正確さ及び許容差
(b)操作中の汚れ又は粒子状物質による穿孔の目詰まり
(c)穿孔スキンを保持する構造による穿孔の遮断
(d)吸引を穿孔スキンに適用させる内側吸引チャンバー内の吸引の不均一性
(e)外圧の翼弦方向の変動
(f)大きい吸引速度による穿孔付近の流れの歪み
(a)不可避の穴又は機械加工のエラー
(b)穿孔の目詰まり
(c)穿孔スキンを保持する構造による遮断
(d)内側吸引チャンバー内の吸引の不均一性
(e)大きい吸引速度による穿孔の付近の流れの歪み
外圧の翼弦方向の外側の変動を補償する穿孔スキン構造を提供すること:
構造剛性を有する穿孔スキン構造を提供し、穿孔の効果を著しく弱めることを避けること:
高い熱伝導率を有する穿孔スキン構造を提供すること。
50 前縁
62 流線
100 外側スキン
Claims (4)
- 外側スキンと吸引システムを有する層流制御装置にして、
外側スキンはそこを通って連絡している多数の穿孔と外側表面を有し、
外側表面は、該外側表面に沿って流れる境界層気流を含む気流に晒すために適用され、
吸引システムは外側表面と反対側の外側スキンの面における穿孔と連絡し、穿孔を介して境界層気流から空気を吸引し、
穿孔を通る空気の吸引のために流れの外乱が境界層気流で作られる層流制御装置において、
穿孔は、流れの外乱が、少なくとも一つ又は複数の選択された波長で相互の弱め合う干渉を受けるような穿孔の空間パターンで空間に分布しており、
空間パターンは、少なくとも一つの縦に延びる穿孔の列の、少なくとも一つの細長い縦に延びる束を有し、
穿孔のそれぞれは、100〜3000μmの範囲の長さと50〜250μmの範囲の幅をそれぞれ有するマイクロスロットであることを特徴とする層流制御装置。 - 請求項1に記載の層流制御装置において、
空間パターンが多数の細長い縦に延びる穿孔の束を有し、
束は互いに平行に配置され、それらの間のそれぞれの大きい穿孔されていないスキン領域によって互いに離されており、
束はそれぞれ、多数の縦に延びる穿孔の列を含み、
列は、互いにジグザグに配置された穿孔をそれぞれ有する列と隣接する列の列グループにおいて互いに平行に配され、
束のそれぞれの内部において隣接する列グループの間に小さい穿孔されていないスキン領域が設けられていることを特徴とする層流制御装置。 - 請求項2に記載の層流制御装置において、束のそれぞれにおける列グループが異なる数の穿孔の列をそれぞれに含むことを特徴とする層流制御装置。
- 請求項1に記載の層流制御装置において、
空間パターンが多数の細長い縦に延びる穿孔の束を有し、
束のそれぞれが、多数の縦に延びる穿孔の列を含み、
束は互いに平行に配置され、それらの間の穿孔されていないスキン領域によって互いに離されており、
穿孔の列は、互いに弱め合う干渉を生じさせるように配され、穿孔の束は、互いに弱め合う干渉を生じさせるように配されていることを特徴とする層流制御装置。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US37365302P | 2002-04-18 | 2002-04-18 | |
PCT/US2003/012008 WO2003089295A2 (en) | 2002-04-18 | 2003-04-17 | Perforated skin structure for laminar-flow systems |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2008333212A Division JP2009102007A (ja) | 2002-04-18 | 2008-12-26 | 層流システムのための穿孔スキン構造 |
Publications (2)
Publication Number | Publication Date |
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JP2005532209A JP2005532209A (ja) | 2005-10-27 |
JP4268886B2 true JP4268886B2 (ja) | 2009-05-27 |
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JP2003586022A Expired - Fee Related JP4268886B2 (ja) | 2002-04-18 | 2003-04-17 | 層流システムのための穿孔スキン構造 |
JP2008333212A Pending JP2009102007A (ja) | 2002-04-18 | 2008-12-26 | 層流システムのための穿孔スキン構造 |
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Application Number | Title | Priority Date | Filing Date |
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JP2008333212A Pending JP2009102007A (ja) | 2002-04-18 | 2008-12-26 | 層流システムのための穿孔スキン構造 |
Country Status (10)
Country | Link |
---|---|
US (1) | US7152829B2 (ja) |
EP (1) | EP1578663B1 (ja) |
JP (2) | JP4268886B2 (ja) |
CN (1) | CN100408429C (ja) |
AU (1) | AU2003230975A1 (ja) |
BR (1) | BR0309313B1 (ja) |
CA (2) | CA2482247C (ja) |
RU (1) | RU2324625C2 (ja) |
UA (1) | UA89470C2 (ja) |
WO (1) | WO2003089295A2 (ja) |
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2003
- 2003-04-17 BR BRPI0309313-1A patent/BR0309313B1/pt not_active IP Right Cessation
- 2003-04-17 JP JP2003586022A patent/JP4268886B2/ja not_active Expired - Fee Related
- 2003-04-17 CA CA2482247A patent/CA2482247C/en not_active Expired - Fee Related
- 2003-04-17 RU RU2004133680/11A patent/RU2324625C2/ru not_active IP Right Cessation
- 2003-04-17 EP EP03724090.0A patent/EP1578663B1/en not_active Expired - Lifetime
- 2003-04-17 CA CA2661810A patent/CA2661810C/en not_active Expired - Fee Related
- 2003-04-17 UA UA20041109439A patent/UA89470C2/uk unknown
- 2003-04-17 AU AU2003230975A patent/AU2003230975A1/en not_active Abandoned
- 2003-04-17 US US10/511,930 patent/US7152829B2/en not_active Expired - Lifetime
- 2003-04-17 WO PCT/US2003/012008 patent/WO2003089295A2/en active Application Filing
- 2003-04-17 CN CNB038086026A patent/CN100408429C/zh not_active Expired - Fee Related
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2008
- 2008-12-26 JP JP2008333212A patent/JP2009102007A/ja active Pending
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CA2661810A1 (en) | 2003-10-30 |
CA2482247A1 (en) | 2003-10-30 |
CN100408429C (zh) | 2008-08-06 |
WO2003089295A2 (en) | 2003-10-30 |
JP2005532209A (ja) | 2005-10-27 |
AU2003230975A1 (en) | 2003-11-03 |
CN1812911A (zh) | 2006-08-02 |
EP1578663A4 (en) | 2010-11-24 |
RU2004133680A (ru) | 2005-04-20 |
JP2009102007A (ja) | 2009-05-14 |
US20050178924A1 (en) | 2005-08-18 |
CA2661810C (en) | 2011-05-31 |
BR0309313B1 (pt) | 2012-12-11 |
BR0309313A (pt) | 2007-02-21 |
UA89470C2 (uk) | 2010-02-10 |
WO2003089295A3 (en) | 2005-09-15 |
CA2482247C (en) | 2010-11-09 |
AU2003230975A8 (en) | 2003-11-03 |
US7152829B2 (en) | 2006-12-26 |
EP1578663B1 (en) | 2013-06-05 |
RU2324625C2 (ru) | 2008-05-20 |
EP1578663A2 (en) | 2005-09-28 |
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