Aerodynamic Interaction Effects of Tip-Mounted Propellers Installed on the Horizontal Tailplane

Abstract

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Aerodynamic Performance of a Wingtip-Mounted Tractor Propeller Configuration in Windmilling and Energy-Harvesting Conditions

“…As observed in previous work [27], the CFD simulations return a higher section lift coefficient than that obtained from the experiment, but the trends were captured at all thrust settings. As mentioned, the experimental results will be affected by the finite resolution of the pressure data available for integration, possibly explaining part of the offset.…”

“…The validity of the simulation approach was shown before in Refs. [18,27] and is, therefore, not discussed in the present paper.…”

Validation and Comparison of RANS Propeller Modeling Methods for Tip-Mounted Applications

“…Therefore, the setup of the validation experiment is summarized first. The full details of this experimental campaign are discussed by van Arnhem et al [15] A. Wind-Tunnel Facility and Models…”

“…21), an additional difference of the experiment compared to all propeller models is found in the inboard part of the slipstream, where an area with considerably higher tangential velocity is located. This is discussed in more detail by van Arnhem et al [15] In order to explain it, the interaction of the tip vortices with the wing should be considered first. As shown in Fig.…”

Alleviation of Propeller-Slipstream-Induced Unsteady Pylon Loading by a Flow-Permeable Leading Edge

“…These unsteady pylon loads can excite structural vibrations, which are transmitted into the airframe and can be perceived by the passengers as structure-borne noise, thereby reducing passenger comfort [13]. For typical cruise flight conditions, the upstream effect on the propeller loading is small [14], and the downstream effect is the dominant mechanism for the generation of harmonic loading [15].…”