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Aerodynamic Analysi...
Aerodynamic Analysis of Conventional and Boundary Layer Ingesting Propellers
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- Costa, Fabíola Paula (författare)
- Instituto Tecnológico de Aeronáutica (ITA)
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- Tomita, Jesuino Takachi (författare)
- Instituto Tecnológico de Aeronáutica (ITA)
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- Tavares Silva, Vinícius, 1991 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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visa fler...
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- Andersson, Niklas, 1976 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Grönstedt, Tomas, 1970 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Bringhenti, Cleverson (författare)
- Instituto Tecnológico de Aeronáutica (ITA)
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visa färre...
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(creator_code:org_t)
- 2022-12-08
- 2023
- Engelska.
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Ingår i: Journal of Engineering for Gas Turbines and Power. - : ASME International. - 1528-8919 .- 0742-4795. ; 145:1
- Relaterad länk:
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https://research.cha...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- The boundary layer ingestion (BLI) concept has emerged as a novel technology for reducing aircraft fuel consumption. Several studies designed BLI-fans for aircraft. BLI-propellers, although, have still received little attention, and the choice of open-rotors or ducted propellers is still an open question regarding the best performance. The blade design is also challenging because the BLI-propulsors ingest a nonuniform flow. These aspects emphasize further investigation of unducted and ducted BLI-propulsors and the use of optimization frameworks, coupled with computational fluid dynamics simulations, to design the propeller to adapt to the incoming flow. This paper uses a multi-objective NSGA-II optimization framework, coupled with three-dimensional RANS simulations and radial basis function (RBF) metamodeling, used for the design and optimization of three propeller configurations at cruise conditions: (a) conventional propeller operating in the freestream, (b) unducted BLI-propeller, and (c) ducted BLI-propeller, both ingesting the airframe boundary layer. The optimization results showed a significant increase in chord and a decrease in the blade angles in the BLI configurations, emphasizing that these geometric parameters optimization highly affects the BLI-blade design. The unducted BLI-propeller needs approximately 40% less shaft power than the conventional propeller to generate the same amount of propeller force. The ducted BLI-propeller needs even less power, 47%. The duct contributes to the tip vortex weakening, recovering the swirl, and turning into propeller force, as noticed from 80% of the blade span to the tip. However, the unducted and ducted BLI-configurations presented a higher backward force, 26% and 46%, respectively, compared to the conventional propeller, which can be detrimental and narrow the use of these configurations.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Rymd- och flygteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Aerospace Engineering (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Energiteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Energy Engineering (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Strömningsmekanik och akustik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Fluid Mechanics and Acoustics (hsv//eng)
Nyckelord
- ducted BLI-propeller
- boundary layer ingestion
- airframe-propulsion system integration
- BLI-propeller
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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