Vienna Vertical lift Day 2016

General Information and Program

Wednesday 8th June 2016

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Michael WeigandDean of Machine Design Department

Preface

Following the Expert Interview Day 2015 TU Vienna hosts the 1st Vienna Vertical Lift Day 2016, bringing together researchers and specialists in rotorcraft

technology from universities, research organisations and industry. Like the Future Vertical Lift Program in the United States of America nearly all countries active in rotorcraft work on new concepts and solutions; various strategic ap-proaches and programs like the IFAR Vertical Lift Initia-tive are getting shape. First aim of the Vertical Lift Day is therefore to give an overview about new challeng-es, initiatives and lead projects for future vertical lift. Secondly it will look on technological approaches for fu-

ture rotorcraft. Bringing together vertical lift specialists from different branches the leading idea of the Vertical Lift Day is to discuss and contribute to a common view on challenges and technological approaches, thus enabling the participants to find commonalities and to harmonize their work in worldwide, European and national ac-tivities, especially in technological research.TU Vienna as Venue is active in drive train technology for aircraft – especially rotor-craft – since 2008 and is leading the Vertical Lift Initiative in IFAR. Austria has strong suppliers for rotorcraft, especially in the drive train sector: they are linked to TU Vienna in common projects and the AAI (Austrian Aeronautics Industries Group).

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This program folder will provide an overview on the scheduled events and firmly believe it will arouse your interest.

The event is planned to be a platform for exchanging ideas & information and to prepare basis for decision -making onto specific topics related with rotorcraft design. The main topics covered in this session would be, ini-tially, about new missions and requirements for future rotorcraft and secondly then, on the possible technical solutions to comply with the requirements and how to fulfil the new missions in the best way. It is about con-figurations of rotorcraft drive systems.To make the event livelier, we have conveyed for a friend-ly get-together in the evening in a typically Viennese

restaurant. We kindly request your esteemed presence and participation to the afore-mentioned event.

Kindly find my contact details below. If you are interested to join to the Vienna Vertical Lift Day 2016 please inform me! And also for any further queries please don’t hesitate to contact me. Thank you!

Hanns AmriGetreidemakt 9 / E307-31060 ViennaAustriaTel.: +43 1 58801 30611E- Mail: hanns.amri@tuwien.ac.at

Looking forward to welcome you to the Vienna Vertical Lift Day on 8th June 2016!

Hanns AmriProject Manager

OrganisatiOn

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IFAR Vertical Lift

new MissiOns

IFAR, the International Forum for Aviation Research, is the world´s only aviation re-search establishment network. IFAR is established on a voluntary, non- binding ba-sis.

IFAR aims to connect research organisations worldwide, to enable the information ex-change and communication on aviation research activities and to develop among its members a shared understanding on challenges faced by the global aviation research community.

IFAR develops views and recommendations, e.g. the IFAR Framework Document on future research strategies and facilitates opportunities for networking and partner-ships.

IFAR Vertical Lift discusses global air transport with the goal of minimal travelling times. Vertical Lift / VTOL – aircraft can be one important part of a global air transport system reaching these goals. OEM´s of VTOL aircraft (i.e. Helicopters, Tiltrotor- aircraft) currently work on new products based on individual motivation and scenarios and completely new concepts come up.

The main question of IFAR Vertical Lift program is: “How can Vertical Lift contribute to a global air transport system?” The goal is to have information from all participating countries about the activities in the development of new rotorcraft and the reasons for it. With this information harmonized activities are started in IFAR to have a clear basis for future development of rotorcraft and worldwide reference to compare future rotorcraft design.

Fields like air rescue and offshore operations also have great potential to identify com-mon fields of activity.

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Morning Session

The morning session is about new requirements on future rotorcraft, which is part of the IFAR Vertical Lift program. The main question of this session is: “What should new rotorcraft be built for and what are the future requirements?”

Last year we talked about the past development of rotorcraft and we could figure out why rotorcraft are not an individual transport system like cars nowadays. They are too complex, too noisy and too expensive for individuals. The helicopter is also not used as a mass transport system for people or cargo like trains are used nowadays. They would need much less infrastructure compared to trains and would be as fast or even faster. Here the main problem is the acceptance, the noise and the cost. So rotorcraft are used nowadays where noise and costs are not very important. They are used in regions which are difficult to reach and in time critical transport. So the main missions are rescue missions, transport missions in remote areas, especially in the oil and gas industry and military missions.

Now the focus is on future missions. As we could see last year, there are a lot of differ-ent new designs of rotorcraft from nearly every manufacturer. We want to take a look onto the reasons for these new developments. Changing requirements in passenger transport but also in freight transport may also lead to an increased usage of rotorcraft technology. We want to recognize new trends and requirements for rotorcraft out of these fields.But we also want to look on the development from an other perspective. Nowadays most rotorcraft are used in “special fields”, like described above. It would be interest-ing to find out which key improvements are necessary to open a new field for rotor-craft usage.

Questions in the discussion could be:

? Are there new boundary conditions for using rotorcraft? ? Is there a reason for an increasing use of rotorcraft? ? If rotorcraft would have a better performance in a specific field, would

there be new fields for using them?

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new technOlOgies

Variable Rotor Speed on different Configurations

The project VARI-SPEED has the aim to invent a speed-variable drive train for dif-ferent rotorcraft architectures to enable a modern and ecologically efficient avi-ation for rotorcraft. A rotor and a gearbox are designed and evaluated in terms

of their usability (general, weight, costs, etc.). Besides, failures and risks for a chosen rotorcraft are reckoned.

It is an international project, supported by German “Bundesministerium für Wirschaft und Energie” in the program “LuFo” and by the Austrian “Bundesministerium für Ver-kehr Innovation und Technologie” in the program “TAKE OFF”. Partners are the Uni-versities of Technology Vienna, Munich and Zoerkler an Austrian gear manufacturer.

Variable rotor speed for rotorcraft could increase the efficiency and enlarge the flight envelope of a rotorcraft. But there are several different configurations of rotorcraft and for each configuration different technologies are possible to enable a variable rotor speed. So the first step of the project is to find out in which case the variable rotor speed technology fits best.

Therefore five different configurations were simulated with the original designed rotor speed and with a variable rotor speed. Drive train technologies were analysed according to their weight and efficiency. Several missions were defined, to see the performance of the different configurations and the different drive train technologies and to figure out how much of the speed variation is used in a mission.

The results will be presented for discussion on the Vienna Vertical Lift Day 2016!

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Afternoon Session

The Afternoon Session is about new technologies in the field of rotorcraft. The fo-cus is on the drive train. The main question of this session is: “How should future rotorcraft look like?”

Last year we discussed about the possibility to vary the rotor speed during the flight of a rotorcraft. We could figure out that the rotor speed variation would bring benefits in rotorcraft efficiency and that it is possible to increase the flight envelope of rotor-craft. But we also considered that there is a lot of research work to be done, to make variable rotor speed rotorcraft fly. Especially the vibrations and the control of the rotor as well as the rotor blades themselves need a deeper look on it. We also discussed some drive train technologies, especially gearbox technologies, with respect to their ability to vary rotor speed. The main difficulties are the shifting, the weight and safety.

This year we will talk about different possibilities to vary the rotor speed. We will look at turbines, electric drive trains and on geared drive trains. After an overview, we dis-cuss the pros and cons of these different technologies. Then we will go on a higher level. Different rotorcraft configurations have different advantages and disadvantages according to the rotor speed variation. Therefore we will figure out what are the differences and what is common to all of them. In the next step we will take a look at the different drive train technologies in com-bination with the different configuration. We will discuss about the advantages and disadvantages of several combinations.Finally we will look at the performance of the combinations on three pre-defined dif-ferent missions.

Questions in the discussion could be:

? How should a future rotorcraft look like? ? What are the pros and cons of different drive train technologies and why? ? How much influence has the rotorcraft configuration on the efficiency of

variable rotor speed? ? Which rotorcraft configuration benefits most of which drive train technol-

ogy? ? Are the chosen missions representative for future usage?

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Wednesday 8th June 201608:45 Registration

09:15 Welcome and Introduction

Morning session: NEW MISSIONS

09:30 IFAR Vertical LiftRoadmap, aims and first resultsSpeaker: Prof. Michael Weigand, Technical University of Vienna

10:00 Air Transport SystemsOverview of usage of aircraft in transportationSpeaker: Prof. Michael Weigand, Technical University of Vienna

10:30 Coffee Break

10:45 Helicopter emergency medical serviceMotivation for focused research Speaker: Dr. Christoph Kessler, DLR - Institute of Flight Systems

11:15 Missions in the change of timeClassic vs. New Missions for RotorcraftSpeaker: Prof. Vladimir Zhuravlev, Moscow Aviation Institute

11:45 DiscussionWhat should new rotorcraft be built for and what are the future re-quirements?

12:30 Lunch Break

PrOgraM

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Afternoon session: NEW TECHNOLOGIES

14:00 Drive train TechnologiesPros and cons of different technologiesSpeaker: Pierre Paschinger, Technical University of Vienna

14:30 Enhanced efficiency and increased flight envelope with variable main rotor speedCalculations of different Helicopters & Configurations Speaker: Tobias Pflumm, Technical University of Munich

15:00 Coffee Break

15:15 Mission Advantages with Variable Rotor SpeedCOMPARING DIFFERENT CONFIGURATIONSSpeaker: Willem Garre, Technical University of Munich

15:45 VARI-SPEEDConfiguration - Decision making processSpeaker: Hanns Amri, Technical University of Vienna

16:15 Discussion How should future rotorcraft look like?

17:00 Closing Remaks

Evening Event

19:00 DinnerDinner in a typical Viennese location. We will start together from the university at Getreidemarkt.

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The Expert Interview takes place at Getreidemarkt 9 / E307-3. You will find it in the building “BD” the Stair 1 in the third floor. Arrival by car:You can use the car park in Lehargasse!Arrival by plane:From the airport take the CAT or S7 train to “Wien Mitte”. Then Take the subway U4 to “Karlsplatz”. Alternatively you can take any train to Wien Hauptbahnhof.Arrival by train:If you are at Westbahnhof than take the subway U3 (yellow line) bound for Simmering to “Neubaugasse”. Go to the “Haus des Meeres” and then follow the “Gumpendorfer-straße” to city center. If you are at Hauptbahnhof take the subway U1 (red line) bound for Leopoldau to “Karlsplatz”.

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Published by: TU Wien, Karlsplatz 13, 1040 Vienna, AUSTRIA

General CONTACT:TU Wien - Institut für KonstruktionswissenschaftenGetreidemarkt 9/307, A-1060 Wien

helga.havlik@tuwien.ac.at http://www.ikl.tuwien.ac.at Tel: +43 1 58801 30601

TECHNISCHEUNIVERSITÄTMÜNCHEN

SUPPORTED BY

PROJECT PARTNER

VARI-SPEEDTHE EXPERT DAY 2016 IS POWERED BY

THE RESEARCH PROJECT

VARI-SPEED