Experimental study of noise emitted by propeller’s surface imperfections
Recently, noise generation by unmanned aerial vehicles has been identified as an important issue, since they may fly over populated areas, or must often fulfill reconnaissance and surveillance missions. The aerodynamic noise radiating from the interaction between the flow and the blades is more diff...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Pechan, Tibor [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2015transfer abstract |
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| Schlagwörter: |
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| Umfang: |
6 |
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| Übergeordnetes Werk: |
Enthalten in: Formation of stacking fault tetrahedron in single-crystal Cu during nanoindentation investigated by molecular dynamics - Liu, Qitao ELSEVIER, 2017, Amsterdam [u.a.] |
|---|---|
| Übergeordnetes Werk: |
volume:92 ; year:2015 ; pages:12-17 ; extent:6 |
| Links: |
|---|
| DOI / URN: |
10.1016/j.apacoust.2014.11.014 |
|---|
| Katalog-ID: |
ELV034865802 |
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| 520 | |a Recently, noise generation by unmanned aerial vehicles has been identified as an important issue, since they may fly over populated areas, or must often fulfill reconnaissance and surveillance missions. The aerodynamic noise radiating from the interaction between the flow and the blades is more difficult to address and control than the mechanical noise. The reduction of the aerodynamic noise is often performed by design optimizations of the blade geometry, without considering potential surface imperfections that may emerge, for example, from ice or dirt deposition. It is important to evaluate and understand the noise signature emitted by propellers operating in various adverse conditions. In this work, experimental acoustic measurements are conducted to evaluate the noise radiating from several propellers featuring different surface imperfections. To this end, an experimental stand was designed, and various propellers with different blade imperfections were tested acoustically. The sound pressure level shows that while some surface imperfections are not affecting the overall noise, certain types of such imperfections can increase slightly the overall noise level at low rotational speeds, or can decrease slightly the overall noise level at high rotational speeds. | ||
| 520 | |a Recently, noise generation by unmanned aerial vehicles has been identified as an important issue, since they may fly over populated areas, or must often fulfill reconnaissance and surveillance missions. The aerodynamic noise radiating from the interaction between the flow and the blades is more difficult to address and control than the mechanical noise. The reduction of the aerodynamic noise is often performed by design optimizations of the blade geometry, without considering potential surface imperfections that may emerge, for example, from ice or dirt deposition. It is important to evaluate and understand the noise signature emitted by propellers operating in various adverse conditions. In this work, experimental acoustic measurements are conducted to evaluate the noise radiating from several propellers featuring different surface imperfections. To this end, an experimental stand was designed, and various propellers with different blade imperfections were tested acoustically. The sound pressure level shows that while some surface imperfections are not affecting the overall noise, certain types of such imperfections can increase slightly the overall noise level at low rotational speeds, or can decrease slightly the overall noise level at high rotational speeds. | ||
| 650 | 7 | |a Propeller noise |2 Elsevier | |
| 650 | 7 | |a Aeroacoustics |2 Elsevier | |
| 650 | 7 | |a Experimental measurements |2 Elsevier | |
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10.1016/j.apacoust.2014.11.014 doi GBVA2015020000020.pica (DE-627)ELV034865802 (ELSEVIER)S0003-682X(15)00004-3 DE-627 ger DE-627 rakwb eng 530 530 DE-600 530 VZ 600 670 530 VZ 51.00 bkl Pechan, Tibor verfasserin aut Experimental study of noise emitted by propeller’s surface imperfections 2015transfer abstract 6 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Recently, noise generation by unmanned aerial vehicles has been identified as an important issue, since they may fly over populated areas, or must often fulfill reconnaissance and surveillance missions. The aerodynamic noise radiating from the interaction between the flow and the blades is more difficult to address and control than the mechanical noise. The reduction of the aerodynamic noise is often performed by design optimizations of the blade geometry, without considering potential surface imperfections that may emerge, for example, from ice or dirt deposition. It is important to evaluate and understand the noise signature emitted by propellers operating in various adverse conditions. In this work, experimental acoustic measurements are conducted to evaluate the noise radiating from several propellers featuring different surface imperfections. To this end, an experimental stand was designed, and various propellers with different blade imperfections were tested acoustically. The sound pressure level shows that while some surface imperfections are not affecting the overall noise, certain types of such imperfections can increase slightly the overall noise level at low rotational speeds, or can decrease slightly the overall noise level at high rotational speeds. Recently, noise generation by unmanned aerial vehicles has been identified as an important issue, since they may fly over populated areas, or must often fulfill reconnaissance and surveillance missions. The aerodynamic noise radiating from the interaction between the flow and the blades is more difficult to address and control than the mechanical noise. The reduction of the aerodynamic noise is often performed by design optimizations of the blade geometry, without considering potential surface imperfections that may emerge, for example, from ice or dirt deposition. It is important to evaluate and understand the noise signature emitted by propellers operating in various adverse conditions. In this work, experimental acoustic measurements are conducted to evaluate the noise radiating from several propellers featuring different surface imperfections. To this end, an experimental stand was designed, and various propellers with different blade imperfections were tested acoustically. The sound pressure level shows that while some surface imperfections are not affecting the overall noise, certain types of such imperfections can increase slightly the overall noise level at low rotational speeds, or can decrease slightly the overall noise level at high rotational speeds. Propeller noise Elsevier Aeroacoustics Elsevier Experimental measurements Elsevier Sescu, Adrian oth Enthalten in Elsevier Liu, Qitao ELSEVIER Formation of stacking fault tetrahedron in single-crystal Cu during nanoindentation investigated by molecular dynamics 2017 Amsterdam [u.a.] (DE-627)ELV020429711 volume:92 year:2015 pages:12-17 extent:6 https://doi.org/10.1016/j.apacoust.2014.11.014 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U GBV_ILN_22 GBV_ILN_31 GBV_ILN_40 GBV_ILN_60 51.00 Werkstoffkunde: Allgemeines VZ AR 92 2015 12-17 6 045F 530 |
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10.1016/j.apacoust.2014.11.014 doi GBVA2015020000020.pica (DE-627)ELV034865802 (ELSEVIER)S0003-682X(15)00004-3 DE-627 ger DE-627 rakwb eng 530 530 DE-600 530 VZ 600 670 530 VZ 51.00 bkl Pechan, Tibor verfasserin aut Experimental study of noise emitted by propeller’s surface imperfections 2015transfer abstract 6 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Recently, noise generation by unmanned aerial vehicles has been identified as an important issue, since they may fly over populated areas, or must often fulfill reconnaissance and surveillance missions. The aerodynamic noise radiating from the interaction between the flow and the blades is more difficult to address and control than the mechanical noise. The reduction of the aerodynamic noise is often performed by design optimizations of the blade geometry, without considering potential surface imperfections that may emerge, for example, from ice or dirt deposition. It is important to evaluate and understand the noise signature emitted by propellers operating in various adverse conditions. In this work, experimental acoustic measurements are conducted to evaluate the noise radiating from several propellers featuring different surface imperfections. To this end, an experimental stand was designed, and various propellers with different blade imperfections were tested acoustically. The sound pressure level shows that while some surface imperfections are not affecting the overall noise, certain types of such imperfections can increase slightly the overall noise level at low rotational speeds, or can decrease slightly the overall noise level at high rotational speeds. Recently, noise generation by unmanned aerial vehicles has been identified as an important issue, since they may fly over populated areas, or must often fulfill reconnaissance and surveillance missions. The aerodynamic noise radiating from the interaction between the flow and the blades is more difficult to address and control than the mechanical noise. The reduction of the aerodynamic noise is often performed by design optimizations of the blade geometry, without considering potential surface imperfections that may emerge, for example, from ice or dirt deposition. It is important to evaluate and understand the noise signature emitted by propellers operating in various adverse conditions. In this work, experimental acoustic measurements are conducted to evaluate the noise radiating from several propellers featuring different surface imperfections. To this end, an experimental stand was designed, and various propellers with different blade imperfections were tested acoustically. The sound pressure level shows that while some surface imperfections are not affecting the overall noise, certain types of such imperfections can increase slightly the overall noise level at low rotational speeds, or can decrease slightly the overall noise level at high rotational speeds. Propeller noise Elsevier Aeroacoustics Elsevier Experimental measurements Elsevier Sescu, Adrian oth Enthalten in Elsevier Liu, Qitao ELSEVIER Formation of stacking fault tetrahedron in single-crystal Cu during nanoindentation investigated by molecular dynamics 2017 Amsterdam [u.a.] (DE-627)ELV020429711 volume:92 year:2015 pages:12-17 extent:6 https://doi.org/10.1016/j.apacoust.2014.11.014 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U GBV_ILN_22 GBV_ILN_31 GBV_ILN_40 GBV_ILN_60 51.00 Werkstoffkunde: Allgemeines VZ AR 92 2015 12-17 6 045F 530 |
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10.1016/j.apacoust.2014.11.014 doi GBVA2015020000020.pica (DE-627)ELV034865802 (ELSEVIER)S0003-682X(15)00004-3 DE-627 ger DE-627 rakwb eng 530 530 DE-600 530 VZ 600 670 530 VZ 51.00 bkl Pechan, Tibor verfasserin aut Experimental study of noise emitted by propeller’s surface imperfections 2015transfer abstract 6 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Recently, noise generation by unmanned aerial vehicles has been identified as an important issue, since they may fly over populated areas, or must often fulfill reconnaissance and surveillance missions. The aerodynamic noise radiating from the interaction between the flow and the blades is more difficult to address and control than the mechanical noise. The reduction of the aerodynamic noise is often performed by design optimizations of the blade geometry, without considering potential surface imperfections that may emerge, for example, from ice or dirt deposition. It is important to evaluate and understand the noise signature emitted by propellers operating in various adverse conditions. In this work, experimental acoustic measurements are conducted to evaluate the noise radiating from several propellers featuring different surface imperfections. To this end, an experimental stand was designed, and various propellers with different blade imperfections were tested acoustically. The sound pressure level shows that while some surface imperfections are not affecting the overall noise, certain types of such imperfections can increase slightly the overall noise level at low rotational speeds, or can decrease slightly the overall noise level at high rotational speeds. Recently, noise generation by unmanned aerial vehicles has been identified as an important issue, since they may fly over populated areas, or must often fulfill reconnaissance and surveillance missions. The aerodynamic noise radiating from the interaction between the flow and the blades is more difficult to address and control than the mechanical noise. The reduction of the aerodynamic noise is often performed by design optimizations of the blade geometry, without considering potential surface imperfections that may emerge, for example, from ice or dirt deposition. It is important to evaluate and understand the noise signature emitted by propellers operating in various adverse conditions. In this work, experimental acoustic measurements are conducted to evaluate the noise radiating from several propellers featuring different surface imperfections. To this end, an experimental stand was designed, and various propellers with different blade imperfections were tested acoustically. The sound pressure level shows that while some surface imperfections are not affecting the overall noise, certain types of such imperfections can increase slightly the overall noise level at low rotational speeds, or can decrease slightly the overall noise level at high rotational speeds. Propeller noise Elsevier Aeroacoustics Elsevier Experimental measurements Elsevier Sescu, Adrian oth Enthalten in Elsevier Liu, Qitao ELSEVIER Formation of stacking fault tetrahedron in single-crystal Cu during nanoindentation investigated by molecular dynamics 2017 Amsterdam [u.a.] (DE-627)ELV020429711 volume:92 year:2015 pages:12-17 extent:6 https://doi.org/10.1016/j.apacoust.2014.11.014 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U GBV_ILN_22 GBV_ILN_31 GBV_ILN_40 GBV_ILN_60 51.00 Werkstoffkunde: Allgemeines VZ AR 92 2015 12-17 6 045F 530 |
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10.1016/j.apacoust.2014.11.014 doi GBVA2015020000020.pica (DE-627)ELV034865802 (ELSEVIER)S0003-682X(15)00004-3 DE-627 ger DE-627 rakwb eng 530 530 DE-600 530 VZ 600 670 530 VZ 51.00 bkl Pechan, Tibor verfasserin aut Experimental study of noise emitted by propeller’s surface imperfections 2015transfer abstract 6 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Recently, noise generation by unmanned aerial vehicles has been identified as an important issue, since they may fly over populated areas, or must often fulfill reconnaissance and surveillance missions. The aerodynamic noise radiating from the interaction between the flow and the blades is more difficult to address and control than the mechanical noise. The reduction of the aerodynamic noise is often performed by design optimizations of the blade geometry, without considering potential surface imperfections that may emerge, for example, from ice or dirt deposition. It is important to evaluate and understand the noise signature emitted by propellers operating in various adverse conditions. In this work, experimental acoustic measurements are conducted to evaluate the noise radiating from several propellers featuring different surface imperfections. To this end, an experimental stand was designed, and various propellers with different blade imperfections were tested acoustically. The sound pressure level shows that while some surface imperfections are not affecting the overall noise, certain types of such imperfections can increase slightly the overall noise level at low rotational speeds, or can decrease slightly the overall noise level at high rotational speeds. Recently, noise generation by unmanned aerial vehicles has been identified as an important issue, since they may fly over populated areas, or must often fulfill reconnaissance and surveillance missions. The aerodynamic noise radiating from the interaction between the flow and the blades is more difficult to address and control than the mechanical noise. The reduction of the aerodynamic noise is often performed by design optimizations of the blade geometry, without considering potential surface imperfections that may emerge, for example, from ice or dirt deposition. It is important to evaluate and understand the noise signature emitted by propellers operating in various adverse conditions. In this work, experimental acoustic measurements are conducted to evaluate the noise radiating from several propellers featuring different surface imperfections. To this end, an experimental stand was designed, and various propellers with different blade imperfections were tested acoustically. The sound pressure level shows that while some surface imperfections are not affecting the overall noise, certain types of such imperfections can increase slightly the overall noise level at low rotational speeds, or can decrease slightly the overall noise level at high rotational speeds. Propeller noise Elsevier Aeroacoustics Elsevier Experimental measurements Elsevier Sescu, Adrian oth Enthalten in Elsevier Liu, Qitao ELSEVIER Formation of stacking fault tetrahedron in single-crystal Cu during nanoindentation investigated by molecular dynamics 2017 Amsterdam [u.a.] (DE-627)ELV020429711 volume:92 year:2015 pages:12-17 extent:6 https://doi.org/10.1016/j.apacoust.2014.11.014 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U GBV_ILN_22 GBV_ILN_31 GBV_ILN_40 GBV_ILN_60 51.00 Werkstoffkunde: Allgemeines VZ AR 92 2015 12-17 6 045F 530 |
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10.1016/j.apacoust.2014.11.014 doi GBVA2015020000020.pica (DE-627)ELV034865802 (ELSEVIER)S0003-682X(15)00004-3 DE-627 ger DE-627 rakwb eng 530 530 DE-600 530 VZ 600 670 530 VZ 51.00 bkl Pechan, Tibor verfasserin aut Experimental study of noise emitted by propeller’s surface imperfections 2015transfer abstract 6 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Recently, noise generation by unmanned aerial vehicles has been identified as an important issue, since they may fly over populated areas, or must often fulfill reconnaissance and surveillance missions. The aerodynamic noise radiating from the interaction between the flow and the blades is more difficult to address and control than the mechanical noise. The reduction of the aerodynamic noise is often performed by design optimizations of the blade geometry, without considering potential surface imperfections that may emerge, for example, from ice or dirt deposition. It is important to evaluate and understand the noise signature emitted by propellers operating in various adverse conditions. In this work, experimental acoustic measurements are conducted to evaluate the noise radiating from several propellers featuring different surface imperfections. To this end, an experimental stand was designed, and various propellers with different blade imperfections were tested acoustically. The sound pressure level shows that while some surface imperfections are not affecting the overall noise, certain types of such imperfections can increase slightly the overall noise level at low rotational speeds, or can decrease slightly the overall noise level at high rotational speeds. Recently, noise generation by unmanned aerial vehicles has been identified as an important issue, since they may fly over populated areas, or must often fulfill reconnaissance and surveillance missions. The aerodynamic noise radiating from the interaction between the flow and the blades is more difficult to address and control than the mechanical noise. The reduction of the aerodynamic noise is often performed by design optimizations of the blade geometry, without considering potential surface imperfections that may emerge, for example, from ice or dirt deposition. It is important to evaluate and understand the noise signature emitted by propellers operating in various adverse conditions. In this work, experimental acoustic measurements are conducted to evaluate the noise radiating from several propellers featuring different surface imperfections. To this end, an experimental stand was designed, and various propellers with different blade imperfections were tested acoustically. The sound pressure level shows that while some surface imperfections are not affecting the overall noise, certain types of such imperfections can increase slightly the overall noise level at low rotational speeds, or can decrease slightly the overall noise level at high rotational speeds. Propeller noise Elsevier Aeroacoustics Elsevier Experimental measurements Elsevier Sescu, Adrian oth Enthalten in Elsevier Liu, Qitao ELSEVIER Formation of stacking fault tetrahedron in single-crystal Cu during nanoindentation investigated by molecular dynamics 2017 Amsterdam [u.a.] (DE-627)ELV020429711 volume:92 year:2015 pages:12-17 extent:6 https://doi.org/10.1016/j.apacoust.2014.11.014 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U GBV_ILN_22 GBV_ILN_31 GBV_ILN_40 GBV_ILN_60 51.00 Werkstoffkunde: Allgemeines VZ AR 92 2015 12-17 6 045F 530 |
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English |
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Enthalten in Formation of stacking fault tetrahedron in single-crystal Cu during nanoindentation investigated by molecular dynamics Amsterdam [u.a.] volume:92 year:2015 pages:12-17 extent:6 |
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Enthalten in Formation of stacking fault tetrahedron in single-crystal Cu during nanoindentation investigated by molecular dynamics Amsterdam [u.a.] volume:92 year:2015 pages:12-17 extent:6 |
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Formation of stacking fault tetrahedron in single-crystal Cu during nanoindentation investigated by molecular dynamics |
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Recently, noise generation by unmanned aerial vehicles has been identified as an important issue, since they may fly over populated areas, or must often fulfill reconnaissance and surveillance missions. The aerodynamic noise radiating from the interaction between the flow and the blades is more difficult to address and control than the mechanical noise. The reduction of the aerodynamic noise is often performed by design optimizations of the blade geometry, without considering potential surface imperfections that may emerge, for example, from ice or dirt deposition. It is important to evaluate and understand the noise signature emitted by propellers operating in various adverse conditions. In this work, experimental acoustic measurements are conducted to evaluate the noise radiating from several propellers featuring different surface imperfections. To this end, an experimental stand was designed, and various propellers with different blade imperfections were tested acoustically. The sound pressure level shows that while some surface imperfections are not affecting the overall noise, certain types of such imperfections can increase slightly the overall noise level at low rotational speeds, or can decrease slightly the overall noise level at high rotational speeds. |
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Recently, noise generation by unmanned aerial vehicles has been identified as an important issue, since they may fly over populated areas, or must often fulfill reconnaissance and surveillance missions. The aerodynamic noise radiating from the interaction between the flow and the blades is more difficult to address and control than the mechanical noise. The reduction of the aerodynamic noise is often performed by design optimizations of the blade geometry, without considering potential surface imperfections that may emerge, for example, from ice or dirt deposition. It is important to evaluate and understand the noise signature emitted by propellers operating in various adverse conditions. In this work, experimental acoustic measurements are conducted to evaluate the noise radiating from several propellers featuring different surface imperfections. To this end, an experimental stand was designed, and various propellers with different blade imperfections were tested acoustically. The sound pressure level shows that while some surface imperfections are not affecting the overall noise, certain types of such imperfections can increase slightly the overall noise level at low rotational speeds, or can decrease slightly the overall noise level at high rotational speeds. |
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Recently, noise generation by unmanned aerial vehicles has been identified as an important issue, since they may fly over populated areas, or must often fulfill reconnaissance and surveillance missions. The aerodynamic noise radiating from the interaction between the flow and the blades is more difficult to address and control than the mechanical noise. The reduction of the aerodynamic noise is often performed by design optimizations of the blade geometry, without considering potential surface imperfections that may emerge, for example, from ice or dirt deposition. It is important to evaluate and understand the noise signature emitted by propellers operating in various adverse conditions. In this work, experimental acoustic measurements are conducted to evaluate the noise radiating from several propellers featuring different surface imperfections. To this end, an experimental stand was designed, and various propellers with different blade imperfections were tested acoustically. The sound pressure level shows that while some surface imperfections are not affecting the overall noise, certain types of such imperfections can increase slightly the overall noise level at low rotational speeds, or can decrease slightly the overall noise level at high rotational speeds. |
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