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First NICETRIP Powered Wind Tunnel Tests Successfully Completed in DNW-LLF

Stabellini, Alessandro and Verna, Alberto and Ragazzi, Andrea and Schneider, Oliver and Przybilla, Michael and Langer, H.-J. and Hakkaart, J.F. and Hoeijmakers, A.H.W. and de Bruin, A.C. and Philipsen, Iwan (2014) First NICETRIP Powered Wind Tunnel Tests Successfully Completed in DNW-LLF. AHS International Forum 70, May 20–22, 2014, Montréal, Québec, Canada.

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A team of European Industry and academic researchers led by AgustaWestland, a Finmeccanica company, have successfully completed wind tunnel tests of a 1/5th scale model of a tiltwing/tiltrotor aircraft called ERICA (Enhanced Rotorcraft Innovative Concept Achievement) at the DNW-LLF wind tunnel (German-Dutch Wind Tunnels Large Low-speed Facility) in July 2013. This intensive research is partially funded by the European Commission under an EU sixth framework programme called NICETRIP (Novel Innovative Competitive Effective Tilt Rotor Integrated Project). As part of the NICETRIP programme, a 1/5th scale full-span, powered wind tunnel model was designed by NLR, and then manufactured in Russia and The Netherlands. Before entering the wind tunnel on June 18, 2013, extensive instrumentation calibrations, ground vibration tests, tracking & balancing and pre-tests were conducted in the exp. hall of DLR Inst. of flight systems Braunschweig and at DNW-LLF. Once inside the wind tunnel, seven trimmed conditions, representing hovering, transitioning and airplane mode, were tested. For each of these trimmed conditions a comprehensive number of variations (incidence, sideslip, nacelles, tilting outboard wings angles, flaps, flaperons, rudder and elevator angles, blade collective pitch angles...etc) were performed; resulting in a total of over 400 different flight conditions including an exploration towards the boundary of the conversion corridor. For each of the 400 flight conditions, over 800 parameters were recorded; consisting of about 50 parameters from balances loads, strain gages and accelerometers measurements, flight controls position, power required, over 700 static and dynamic pressures channels and a range of safety monitoring parameters. Due to the complexity of the model and numerous aircraft design variables, testing was extremely complex and challenging, during which many minor issues were discovered, but quickly resolved by the team. The test was successfully completed on schedule on July 5th, thanks to the skill and experience of the integrated AgustaWestland, DNW, DLR and NLR team involved in the testing.

Item URL in elib:https://elib.dlr.de/89885/
Document Type:Conference or Workshop Item (Speech)
Title:First NICETRIP Powered Wind Tunnel Tests Successfully Completed in DNW-LLF
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Stabellini, AlessandroAgustaWestlandUNSPECIFIED
Verna, AlbertoAgustaWestlandUNSPECIFIED
Ragazzi, AndreaAgustaWestlandUNSPECIFIED
Refereed publication:No
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:tiltrotor, wind tunnel test
Event Title:AHS International Forum 70
Event Location:Montréal, Québec, Canada
Event Type:international Conference
Event Dates:May 20–22, 2014
Organizer:American Helicopter Society
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 Innovative Rotorcraft (old)
Location: Braunschweig
Institutes and Institutions:Institute of Flight Systems > Rotorcraft
Deposited By: Schneider, Oliver
Deposited On:29 Jan 2015 12:03
Last Modified:29 Jan 2015 12:03

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