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Raju Kulkarni, A. (author), la Rocca, G. (author), Veldhuis, L.L.M. (author), Eitelberg, G. (author)Growing interest in unconventional aircraft designs coupled with miniaturization of electronics and advancements in manufacturing techniques have revived the interest in the use of Sub-scale Flight Testing (SFT) to study the flight behaviour of full-scale aircraft in the early stages of design process by means of free-flying sub-scale models....review 2022
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de Vries, R. (author), van Arnhem, N. (author), Avallone, F. (author), Ragni, D. (author), Vos, Roelof (author), Eitelberg, G. (author), Veldhuis, L.L.M. (author)This experimental study focuses on the aerodynamic interaction between an over-the-wing (OTW) propeller and a wing boundary layer. An OTW propeller is positioned above the hinge line of a wing with a trailing-edge flap. Measurements are carried out with and without axial pressure gradients by deflecting the flap and by extending the flat upper...journal article 2021
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van Arnhem, N. (author), de Vries, R. (author), Sinnige, T. (author), Vos, Roelof (author), Eitelberg, G. (author), Veldhuis, L.L.M. (author)Advances in aerodynamic and propulsive efficiency of future aircraft can be achieved by strategic installation of propellers near the airframe. This paper presents a robust and computationally efficient engineering method to estimate the load distribution of a propeller operating in arbitrary nonuniform flow that is induced by the airframe...journal article 2020
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Avallone, F. (author), van den Ende, Luc (author), Li, Q. (author), Ragni, D. (author), Casalino, D. (author), Eitelberg, G. (author), Veldhuis, L.L.M. (author)A numerical investigation of a propeller with swirl recovery vanes, for which experimental data exist, is performed. A second swirl recovery vane geometry, with shorter vanes to avoid the impingement of the propeller tip vortices, is also investigated. For the baseline swirl recovery vanes, the efficiency of the propulsive system increases by 2...journal article 2019
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Li, Q. (author), Liu, Xinyuan (author), Eitelberg, G. (author), Veldhuis, L.L.M. (author)This paper addresses the design of swirl recovery vanes for propeller propulsion in tractor configuration at cruise conditions using numerical tools.Amultifidelity optimization framework is formulated for the design purpose, which exploits low-fidelity potential flow-based analysis results as input for high-fidelity Euler equation-based...journal article 2019
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Sinnige, T. (author), van Arnhem, N. (author), Stokkermans, T.C.A. (author), Eitelberg, G. (author), Veldhuis, L.L.M. (author)Wingtip-mounted propellers installed in a tractor configuration can decrease the wing induced drag by attenuating the wingtip vortex by the propeller slipstream. This paper presents an aerodynamic analysis of the propeller-wing interaction effects for the wingtip-mounted propeller configuration, including a comparison with a conventional...journal article 2019
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de Vries, R. (author), van Arnhem, N. (author), Avallone, F. (author), Ragni, D. (author), Vos, Roelof (author), Eitelberg, G. (author), Veldhuis, L.L.M. (author)This experimental study focuses on the aerodynamic interaction effects that occur between an over-the-wing (OTW) propeller and a wing boundary-layer. An OTW propeller is positioned above the hinge-line of a wing featuring a plain flap. The measurements are carried out with and without axial pressure gradients by deflecting the flap and by...conference paper 2019
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Sinnige, T. (author), della Corte, B. (author), de Vries, R. (author), Avallone, F. (author), Merino Martinez, R. (author), Ragni, D. (author), Eitelberg, G. (author), Veldhuis, L.L.M. (author)The impingement of a propeller slipstream on a downstream surface causes unsteady loading, which may lead to vibrations responsible for structure-borne noise. A low-speed wind-tunnel experiment was performed to quantify the potential of a flow-permeable leading edge to alleviate the slipstream-induced unsteady loading. For this purpose, a...journal article 2019
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van Arnhem, N. (author), Sinnige, T. (author), Stokkermans, T.C.A. (author), Eitelberg, G. (author), Veldhuis, L.L.M. (author)This paper addresses the effects of propeller installation on the aerodynamic performance of a tailplane featuring tip-mounted propellers. A model of a low aspect ratio tailplane equipped with an elevator and a tip-mounted propeller was installed in a low-speed wind-tunnel. Measurements were taken with an external balance and surface pressure...conference paper 2018
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Sinnige, T. (author), Stokkermans, T.C.A. (author), Ragni, D. (author), Eitelberg, G. (author), Veldhuis, L.L.M. (author)Swirl-recovery vanes (SRVs) enhance propulsive efficiency by converting the rotational kinetic energy in a propeller slipstream into additional thrust. This paper discusses the aerodynamic and aeroacoustic impact of the installation of a set of SRVs downstream of a single-rotating propeller. Experiments were carried out in a large low-speed wind...journal article 2018
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Li, Q. (author), Liu, Xinyuan (author), Eitelberg, G. (author), Veldhuis, L.L.M. (author)This paper addresses the design of swirl recovery vanes for propeller propulsion in tractor configuration at cruise conditions using numerical tools. A multi-fidelity optimization framework is formulated for the design purpose, which exploits low-fidelity potential flow-based analysis results as input for high-fidelity Euler equation-based...conference paper 2018
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Sinnige, T. (author), de Vries, R. (author), della Corte, B. (author), Avallone, F. (author), Ragni, D. (author), Eitelberg, G. (author), Veldhuis, L.L.M. (author)An experimental analysis was performed of the unsteady aerodynamic loading caused by the impingement of a propeller slipstream on a downstream lifting surface. When installed on an aircraft, this unsteady loading results in vibrations that are transmitted to the fuselage and are perceived inside the cabin as structure-borne noise. A pylon...journal article 2018
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Li, Q. (author), Öztürk, K. (author), Ragni, D. (author), Sinnige, T. (author), Eitelberg, G. (author), Veldhuis, L.L.M. (author), Yangang, Wang (author)The momentum transferred to the fluid by a running propeller contains not only the desired axial component but also a rotational component that does not contribute to the propeller thrust. By introducing a set of swirl-recovery vanes (SRVs) downstream of the propeller, part of the rotational flow in the slipstream can be redirected into the...journal article 2018
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Yang, Y. (author), Veldhuis, L.L.M. (author), Eitelberg, G. (author)Abstract: During the ground operation of aircraft, the interaction between the propulsor-induced flow field and the ground may lead to the generation of ground vortices. Utilizing numerical approaches, the source of vorticity entering ground vortices is investigated. The results show that the production of wall-parallel components of...journal article 2017
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Yang, Y. (author), Sciacchitano, A. (author), Veldhuis, L.L.M. (author), Eitelberg, G. (author)Abstract: The interaction between a propeller and its self-induced vortices originating on the ground is investigated in a scaled experiment. The velocity distribution in the flow field in two different planes containing the self-induced vortices is measured by particle image velocimetry (PIV). These planes are a wall–parallel plane in close...journal article 2017
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Sinnige, T. (author), Ragni, D. (author), Malgoezar, A.M.N. (author), Eitelberg, G. (author), Veldhuis, L.L.M. (author)Advanced propellers promise significant fuel-burn savings compared to turbofans. When installed on the fuselage in a pusher configuration, the propeller interacts with the wake of the supporting pylon. This paper presents an experimental analysis of the aerodynamic and aeroacoustic characteristics of this pylon–propeller interaction. An isolated...journal article 2017
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- Li, Q. (author), Öztürk, K. (author), Ragni, D. (author), Sinnige, T. (author), Eitelberg, G. (author), Veldhuis, L.L.M. (author), Yangang, Wang (author) conference paper 2017
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de Vries, R. (author), Sinnige, T. (author), della Corte, B. (author), Avallone, F. (author), Ragni, D. (author), Eitelberg, G. (author), Veldhuis, L.L.M. (author)<br/>conference paper 2017
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della Corte, B. (author), Sinnige, T. (author), de Vries, R. (author), Avallone, F. (author), Ragni, D. (author), Eitelberg, G. (author), Veldhuis, L.L.M. (author)<br/>conference paper 2017
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Sinnige, T. (author), Ragni, D. (author), Eitelberg, G. (author), Veldhuis, L.L.M. (author)This paper presents an experimental assessment of the working principles of pylon trailing-edge blowing for the mitigation of the interaction between a pusher propeller and its associated pylon. The experiments were performed at the Large Low-Speed Facility of the German–Dutch wind tunnels (DNW–LLF), using a powered propeller model and an...journal article 2016
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