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Comparison of Different Inflow Models for Intermeshing Rotors

Ehlert, Tobias and Güner, Feyyaz and Voigt, Andreas (2023) Comparison of Different Inflow Models for Intermeshing Rotors. In: 49th European Rotorcraft Forum. 49th European Rotorcraft Forum, 2023-09-05 - 2023-09-07, Bückeburg, Deutschland. (In Press)

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New inflow models have been introduced in the literature for multirotor systems with the goal to include interaction effects between the rotor. While these models have been validated for some rotor configurations, a validation for intermeshing rotor configurations has yet to be presented. This paper gives an overview over some of the existing inflow models applicable to intermeshing rotors. Flight test data is used to compare the hover trim state calculated using different inflow models: The Pitt-Peters model, the Combined Momentum Theory Simple Vortex Theory (CMTSVT) model and a simple inflow coupling introduced in a paper from Padthe et al. The comparison of flight test and simulation prediction shows that for intermeshing rotors, interaction effects must be included in the inflow model to obtain accurate rotor power and collective angle.

Item URL in elib:https://elib.dlr.de/197178/
Document Type:Conference or Workshop Item (Speech)
Title:Comparison of Different Inflow Models for Intermeshing Rotors
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Ehlert, TobiasUNSPECIFIEDhttps://orcid.org/0009-0007-9348-6482UNSPECIFIED
Journal or Publication Title:49th European Rotorcraft Forum
Refereed publication:No
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Status:In Press
Keywords:CMTSVT, Performance, Rotorcraft, Inflow
Event Title:49th European Rotorcraft Forum
Event Location:Bückeburg, Deutschland
Event Type:international Conference
Event Start Date:5 September 2023
Event End Date:7 September 2023
HGF - Research field:other
HGF - Program:other
HGF - Program Themes:other
DLR - Research area:Aeronautics
DLR - Program:L DT - Defense Technology
DLR - Research theme (Project):L - Reconnaissance
Location: Braunschweig
Institutes and Institutions:Institute of Flight Systems > Unmanned Aircraft
Institute of Flight Systems > Rotorcraft
Institute of Flight Systems
Deposited By: Ehlert, Tobias
Deposited On:30 Oct 2023 17:10
Last Modified:24 Apr 2024 20:57

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