JP2020530913A - シュラウド - Google Patents
シュラウド Download PDFInfo
- Publication number
- JP2020530913A JP2020530913A JP2020502697A JP2020502697A JP2020530913A JP 2020530913 A JP2020530913 A JP 2020530913A JP 2020502697 A JP2020502697 A JP 2020502697A JP 2020502697 A JP2020502697 A JP 2020502697A JP 2020530913 A JP2020530913 A JP 2020530913A
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- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 claims description 12
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C1/00—Fuselages; Constructional features common to fuselages, wings, stabilising surfaces or the like
- B64C1/40—Sound or heat insulation, e.g. using insulation blankets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/065—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of foam
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C11/00—Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft
- B64C11/001—Shrouded propellers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C39/00—Aircraft not otherwise provided for
- B64C39/02—Aircraft not otherwise provided for characterised by special use
- B64C39/024—Aircraft not otherwise provided for characterised by special use of the remote controlled vehicle type, i.e. RPV
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64U—UNMANNED AERIAL VEHICLES [UAV]; EQUIPMENT THEREFOR
- B64U20/00—Constructional aspects of UAVs
- B64U20/60—UAVs characterised by the material
- B64U20/65—Composite materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64U—UNMANNED AERIAL VEHICLES [UAV]; EQUIPMENT THEREFOR
- B64U50/00—Propulsion; Power supply
- B64U50/10—Propulsion
- B64U50/13—Propulsion using external fans or propellers
- B64U50/14—Propulsion using external fans or propellers ducted or shrouded
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/10—Properties of the layers or laminate having particular acoustical properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/10—Properties of the layers or laminate having particular acoustical properties
- B32B2307/102—Insulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2603/00—Vanes, blades, propellers, rotors with blades
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
- B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B9/046—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material of foam
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
- B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B9/047—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material made of fibres or filaments
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C27/00—Rotorcraft; Rotors peculiar thereto
- B64C27/82—Rotorcraft; Rotors peculiar thereto characterised by the provision of an auxiliary rotor or fluid-jet device for counter-balancing lifting rotor torque or changing direction of rotorcraft
- B64C2027/8254—Shrouded tail rotors, e.g. "Fenestron" fans
-
- 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
- Y02T50/40—Weight reduction
Abstract
Description
・ 射出成型;
・ 砂型鋳造;
・ 層化作製;
・ 3D印刷;及び/または
・ CNC製造
を含む、任意の適した方法によって製造され得る。
Claims (73)
- プロペラを含むノイズ源を少なくとも部分的に囲むように構成される航空機のためのシュラウドであって、シュラウドの内部に位置する2つ以上の吸音材料を含む、シュラウド。
- 前記2つ以上の吸音材料は層で配置される、請求項1に記載のシュラウド。
- 前記層は反復パターンで配置される、請求項2に記載のシュラウド。
- 前記層は、前記ノイズ源からノイズの方向に全体的に垂直である、請求項2または3に記載のシュラウド。
- 前記2つ以上の材料は第1の材料及び第2の材料を含む、請求項1から3のいずれか一項に記載のシュラウド。
- 前記第1の材料は、薄い軽量材料、繊維性材料、または連通孔多孔質材料のうちの1つである、請求項5に記載のシュラウド。
- 前記第1の材料は、ナノファイバーまたはメラミンフォームの一方である、請求項6に記載のシュラウド。
- 前記第1の材料は、前記第1の材料の吸音を改善するように構成される添加物を含む、請求項6または7に記載のシュラウド。
- 前記添加物は、エアロゲル粒子、TPU粒子、またはガラスビードのうちの1つである、請求項8に記載のシュラウド。
- 前記第2の材料は、薄い軽量材料、繊維性材料、または連通孔多孔質材料のうちの1つである、請求項5から9のいずれか一項に記載のシュラウド。
- 前記第2の材料は、メラミンフォームまたはナノファイバーの一方である、請求項10に記載のシュラウド。
- 前記第1の材料は第1の層として設けられ、前記第2の材料は第2の層として設けられる、請求項5から10のいずれか一項に記載のシュラウド。
- 前記第1の層は200ミクロン〜300ミクロンの厚さを有する、請求項12に記載のシュラウド。
- 前記第2の層は15mm〜35mmの厚さを有する、請求項12または13に記載のシュラウド。
- 前記第1の層は前記第2の層より前記ノイズ源に近い、請求項12に記載のシュラウド。
- 空気ギャップが、前記第1の材料と前記第2の材料との間に設けられる、請求項12に記載のシュラウド。
- 前記2つ以上の吸音材料はシュラウドを実質的に充填する、請求項1から16のいずれか一項に記載のシュラウド。
- 前記ノイズ源はモーターを含む、請求項1から17のいずれか一項に記載のシュラウド。
- 凹所を有する外層をさらに含み、前記凹所は、前記プロペラのブレードの先端の少なくとも一部を部分的に囲むように位置しサイズ決定される、請求項18に記載のシュラウド。
- ノイズを、前記ノイズ源からシュラウドの内部内に伝達するように構成される外層をさらに含む、請求項1から19のいずれか一項に記載のシュラウド。
- 前記外層はアパーチャを含む、請求項20に記載のシュラウド。
- 音減衰接着剤の層を含む、請求項1から21のいずれか一項に記載のシュラウド。
- シュラウドの少なくとも一部はベルマウス状である、請求項1から22のいずれか一項に記載のシュラウド。
- 前記航空機は無人航空機である、請求項1から23のいずれか一項に記載のシュラウド。
- 前記プロペラは垂直揚力プロペラである、請求項1から24のいずれか一項に記載のシュラウド。
- プロペラを含むノイズ源を少なくとも部分的に囲むように構成される航空機のためのシュラウドであって、
外層;及び、
シュラウドの内部の少なくとも1つの吸音材料を含み、
前記外層は、ノイズを、前記ノイズ源からシュラウドの内部内に伝達するように構成される、シュラウド。 - 前記外層は低音響インピーダンスを有する材料で作られる、請求項26に記載のシュラウド。
- 前記外層の音響インピーダンスは空気の音響インピーダンスと実質的に同様である、請求項27に記載のシュラウド。
- 前記外層はアパーチャを含む、請求項26または27に記載のシュラウド。
- 前記外層は、前記ノイズ源の平面内でアパーチャのない帯状体を含む、請求項29に記載のシュラウド。
- 前記アパーチャは、直径が0.1から2mmの間であり、0.1から2mmの間で離間する、請求項29または30に記載のシュラウド。
- 前記外層は剛性材料で作られる、請求項26から31のいずれか一項に記載のシュラウド。
- 前記外層は、
前記ノイズ源に向く前記吸音材料の側に位置決めされたノイズに向く層;及び/または、
前記ノイズ源に向かない前記吸音材料の側に位置決めされた外側に向く層
を含む、請求項32に記載のシュラウド。 - 前記ノイズに向く層及び前記外側に向く層は、音分離コネクタによって接続される、請求項33に記載のシュラウド。
- 前記ノイズに向く層及び前記外側に向く層は異なる材料で作られる、請求項33または34に記載のシュラウド。
- 前記ノイズに向く層は音を実質的に透過する材料で作られる、及び/または、前記外側に向く層は音を実質的に反射する材料で作られる、請求項35に記載のシュラウド。
- 前記少なくとも1つの吸音材料は、薄い軽量材料、繊維性材料、連通孔多孔質材料、ナノファイバー、またはメラミンフォームからなる群から選択される、請求項25から36のいずれか一項に記載のシュラウド。
- 層で配置された2つ以上の吸音材料を含む、請求項25から37のいずれか一項に記載のシュラウド。
- 第1の層は200ミクロンから300ミクロンの間の厚さを有し、第2の層は15mmから35mmの間の厚さを有する、請求項38に記載のシュラウド。
- 前記吸音材料はシュラウドを実質的に充填する、請求項25から39のいずれか一項に記載のシュラウド。
- 前記ノイズ源はモーターを含む、請求項25から40のいずれか一項に記載のシュラウド。
- 前記外層は、前記プロペラのブレードの先端の少なくとも一部を部分的に囲むように位置しサイズ決定される凹所を有する、請求項41に記載のシュラウド。
- 前記凹所はアパーチャがない、請求項42に記載のシュラウド。
- 音減衰接着剤の層を含む、請求項25から43のいずれか一項に記載のシュラウド。
- シュラウドの少なくとも一部はベルマウス状である、請求項25から44のいずれか一項に記載のシュラウド。
- 前記航空機は無人航空機である、請求項25から45のいずれか一項に記載のシュラウド。
- 前記プロペラは垂直揚力プロペラである、請求項25から46のいずれか一項に記載のシュラウド。
- プロペラを含むノイズ源を少なくとも部分的に囲むように構成される航空機のためのシュラウドであって、シュラウドの内部に位置する吸音材料の層及び前記層の少なくとも2つの層の間の空気ギャップを含む、シュラウド。
- 吸音材料の前記層は第1の層及び第2の層を含み、前記空気ギャップは前記第1の層と前記第2の層との間にある、請求項48に記載のシュラウド。
- 各層の前記吸音材料は、薄い軽量材料、繊維性材料、または連通孔多孔質材料、ナノファイバー、またはメラミンフォームのおうちの1つである、請求項49に記載のシュラウド。
- 前記第1の層は10mmの厚さを有し、前記空気ギャップは15mmの厚さを有する、請求項48から50のいずれか一項に記載のシュラウド。
- 前記ノイズ源はモーターを含む、請求項48から51のいずれか一項に記載のシュラウド。
- 音減衰接着剤の層を含む、請求項48から52のいずれか一項に記載のシュラウド。
- 前記航空機は無人航空機である、請求項48から53のいずれか一項に記載のシュラウド。
- 前記プロペラは垂直揚力プロペラである、請求項48から54のいずれか一項に記載のシュラウド。
- プロペラを含むノイズ源を少なくとも部分的に囲むように構成される航空機のためのシュラウドであって、シュラウドの内部に位置する吸音材料の層を含み、少なくとも1つの層は音減衰接着剤である、シュラウド。
- 前記音減衰接着剤は拘束層減衰のために構成される、請求項56に記載のシュラウド。
- 前記音減衰接着剤はDynadamp(商標)である、請求項57に記載のシュラウド。
- 他の層の前記吸音材料は、薄い軽量材料、繊維性材料、連通孔多孔質材料、ナノファイバー、またはメラミンフォームのうちの1つである、請求項56から58のいずれか一項に記載のシュラウド。
- 前記ノイズ源はモーターを含む、請求項56から59のいずれか一項に記載のシュラウド。
- 音減衰接着剤の層を含む、請求項56から60のいずれか一項に記載のシュラウド。
- 前記航空機は無人航空機である、請求項56から61のいずれか一項に記載のシュラウド。
- 前記プロペラは垂直揚力プロペラである、請求項56から62のいずれか一項に記載のシュラウド。
- 少なくとも1つのブレードを有するプロペラを含むノイズ源を少なくとも部分的に囲むように構成される航空機のためのシュラウドであって、凹所を有する外層を含み、前記凹所は、前記少なくとも1つのブレードの先端の少なくとも一部を部分的に囲むように位置しサイズ決定される、シュラウド。
- 前記凹所は、前記少なくとも1つのブレードから渦の形成を最小するように構成される、請求項64に記載のシュラウド。
- 前記外層はアパーチャを含み、前記凹所はアパーチャを含まない、請求項64または65に記載のシュラウド。
- 2つ以上の凹所を含む、請求項64から66のいずれか一項に記載のシュラウド。
- 前記ノイズ源はモーターを含む、請求項64から67のいずれか一項に記載のシュラウド。
- 前記航空機は無人航空機である、請求項64から68のいずれか一項に記載のシュラウド。
- 前記プロペラは垂直揚力プロペラである、請求項64から69のいずれか一項に記載のシュラウド。
- 航空機であって、
少なくとも1つのプロペラ;及び、
請求項1から70のいずれか一項に記載のシュラウド
を備える、航空機。 - 前記航空機は無人航空機である、請求項71に記載の航空機。
- 前記プロペラは垂直揚力プロペラである、請求項71または72に記載のシュラウド。
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US11097828B2 (en) | 2021-08-24 |
JP2023159382A (ja) | 2023-10-31 |
WO2019022618A1 (en) | 2019-01-31 |
US20200164962A1 (en) | 2020-05-28 |
CN110997486A (zh) | 2020-04-10 |
AU2018306554A1 (en) | 2020-02-20 |
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