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EXPERIMENTAL VALIDATION OF TILT-ROTOR AERODYNAMIC PREDICTIONS

Decours, Julien and Beaumier, Philippe and Khier, Walid and Kneisch, Thomas and Valentini, Mirco and Vigevano, Luigi (2014) EXPERIMENTAL VALIDATION OF TILT-ROTOR AERODYNAMIC PREDICTIONS. 40th European Rotorcraft Forum, 02.-04.Sep.2014, Southampton, UK.

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Abstract

A comparison of experimental data with several numerical predictions of the aerodynamic loads on the ERICA model is presented. The calculations are carried out by several Partners of the NICETRIP consortium, with different codes, turbulence models and grids, with the objective of validating the predictive capability of the CFD tools. Concerning the highly loaded minimum speed aircraft mode AC1, a large separation on the wings has been shown, both by experimental measurements and CFD simulations. Despite this large separation, a good agreement has been obtained between CFD simulations and wind tunnel measurements. Strong aerodynamic interactions between the 4/rev. blades passage and the tiltable wing, the nacelle and the fixed wing loads have been confirmed. Finally, we recommend increasing the aircraft speed flight and reducing the angle of attack for this configuration in order to avoid flow separation and reduce aircraft vibrations. In the highly loaded conversion mode CC4, a good agreement between CFD and experimental results has also been shown, in addition to 4/rev. loads fluctuations leading to aircraft vibrations.

Item URL in elib:https://elib.dlr.de/91375/
Document Type:Conference or Workshop Item (Speech)
Title:EXPERIMENTAL VALIDATION OF TILT-ROTOR AERODYNAMIC PREDICTIONS
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Decours, JulienONERAUNSPECIFIED
Beaumier, PhilippeONERAUNSPECIFIED
Khier, Walidwalid.khier (at) dlr.deUNSPECIFIED
Kneisch, ThomasAirbus Helicopters-DeutschlandUNSPECIFIED
Valentini, MircoPolitecnico di MilanoUNSPECIFIED
Vigevano, LuigiPolitecnico di MilanoUNSPECIFIED
Date:2 September 2014
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Tilt-Rotor Aerodynamics. ERICA concept, NICETRIP project, VTOL aircraft, Computational Fluid Mechanics
Event Title:40th European Rotorcraft Forum
Event Location:Southampton, UK
Event Type:international Conference
Event Dates:02.-04.Sep.2014
Organizer:Royal Aeronautical Socity
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:rotorcraft
DLR - Research area:Aeronautics
DLR - Program:L RR - Rotorcraft Research
DLR - Research theme (Project):L - The Virtual Aerodynamic Rotorcraft
Location: Braunschweig
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Helicopters
Deposited By: Khier, Dr.-Ing. Walid
Deposited On:12 Nov 2014 08:24
Last Modified:31 Jul 2019 19:48

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