Key Aerodynamic Technologies for Aircraft Performance Improvement

Fifth Community Aeronautical Days 2006, Vienna, Austria, 19-21 June 2006

Presented by

Géza Schrauf Airbus With contributions of

Burkhard Gölling and Norman Wood

KATnet Key Aerodynamic Technologies for Aircraft Performance Improvement

5th Community Aeronautics Days 19-21 June 2006

The Thematic Network KATnet: Overview

Project No:GTC 2-2001-53003 Coordinator:

Airbus Deutschland

Germany

Contractors:

Airbus UK Airbus France BAE Systems Alenia Aeronautica DLR FOI ONERA QinetiQ

United Kingdom France United Kingdom Italy Germany Sweden France United Kingdom

Duration:

September 2002 – December 2005

DRAGNET Æ KATnet Æ KATnet II (will start in September 2006) 5th Community Aeronautics Days 19-21 June 2006

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The Thematic Network KATnet: Overview


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European Aeronautics: A Vision for 2020

• • • •

50% reduction of fuel consumption 80% reduction of NOX 50% reduction of perceived noise reduction of environmental impact of aircraft manufacturing, maintenance and disposal


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Rotterdam Jet Fuel Spot Price

28 Sep 2005 210 ct/gal

1986-2001 average 59ct/gal

Source: US Dept. of Energy 5th Community Aeronautics Days 19-21 June 2006

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DOC Shares for 6000 nm Mission

FUEL

60 US-ct/US-gallon


FUEL

180 US-ct/US-gallon

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KATnet Workshops & Conferences

Workshop on High Lift Aerodynamics

Sep 2002 Stockholm, Sweden

Workshop on High Speed Aerodynamics Sep 2003 Bath, U.K.

Workshop on Flow Control

Oct 2004 Poitier, France

KATnet Conference

Jun 2005 Bremen, Germany


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TA2: High-Speed Performance KATnet/GARTEUR Workshop on High Speed Aerodynamics 3-4 September 2003 University of Bath, U.K.

Contributing projects: HiReTT, Aeroshape, M-DAW GARTEUR AG 26, 28, 31, 34 National Programmes


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TA2: High-Speed Design Drivers

Reduce drag Reduce weight Reduce airframe costs (simpler structure with less maintenance)


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Specific Range as Performance Measure Specific range SR measures performance of aircraft

more efficient engine => increase bypass ratio, intercooler, … lighter structure

=> advanced materials

better aerodynamics

=> improve => reduce drag

TSFC = thrust specific fuel consumption = weight of fuel consumed during time increment / ( time increment * thrust ) 5th Community Aeronautics Days 19-21 June 2006

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Drag Breakdown of Transport Aircraft in Cruise


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Cruise Drag Reduction Reduce friction drag Natural laminar flow (shaping) Delay lam./turb. transition

Hybrid laminar flow control (suction) Active flow control (wave cancellation)

Reduce lift-dependent drag Elliptic lift distribution has minimal vortex drag Use advanced materials and optimise installation to shift the overall optimum towards an elliptic lift distribution (reduces drag and weight)


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Cruise Drag Reduction Reduce lift-dependent drag (cont.) Novel configurations


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Other Cruise Technologies Reduce design constraints using new materials Shape optimisation Wing tip devices Adaptive wing devices Multi-functional control surfaces Mini trailing edge devices Load control Gust / manoeuvre load alleviation


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TA1: Low-Speed Performance

KATnet/GARTEUR High Lift Workshop 17 - 19 September 2002 Stockholm, Sweden

Contributing projects: GARTEUR AG 25, 36 EUROLIFT, Helix, EPISTLE, HiAer National Programmes


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TA1: High-Lift Design Drivers • Aerodynamics: improve high-lift performance • maximum lift • low take-off drag • improve ice accretion prediction capability • Systems: simplify high lift system • low system complexity with acceptable handling quality • Structure: reduce weight • DOC: reduce airframe costs • simpler structure with less maintenance • Airport capacity: increase landing and take-off rates • wake vortex separation • Aeroacoustics: reduce community noise • target: leave noise foot print in airport area • reduce noise of high-lift components and landing gear


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TA3: Flow Control Technologies

KATnet Flow Control Workshop 12 - 13 October 2004 Poitiers, France

Contributing projects: AWIATOR, ALTTA, HYLTEC, AEROMEMS I & II, HELIX, M-DAW ERCOFTAC SIG, National Flow Control Programmes


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TA3: Research Needs for Drag Reduction Drag reduction by laminar flow - simplified suction systems

U WAVEPACKET

- in-flight skin friction sensors

Actuator

Sensor Exciter

- anti-contamination surface coatings

CANCELLATION

AMPLIFICATION

Sensor

CONTROL SYSTEM

-active control of Tollmien-Schlichting instabilities / microroughness Drag reduction by turbulent flow manipulation - dimples, riblets - compliant surfaces - active manipulation of near wall turbulent flow structures by MEMS - low energy plasma technologies


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TA3: Research Needs for Separation Control Research needs for separation control - air-jet vortex generators steady, unsteady, positive & zero mass flux

- tangential and pulsed blowing


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KATnet Baseline Configurations

Enable universities to evaluate their technologies by providing baseline configurations (short range, long range, supersonic) including - top-level aircraft requirements - basic aerodynamic data - estimated weight break down - simplified performance spread sheet 5th Community Aeronautics Days 19-21 June 2006

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KATnet Website: www.kat-net.com

KATnet website will be maintained and updated in KATnet II 5th Community Aeronautics Days 19-21 June 2006

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Outlook to KATnet II

KATnet II structure 5th Community Aeronautics Days 19-21 June 2006

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This document and all information contained herein is the sole property of AIRBUS DEUTSCHLAND GmbH. No intellectual property rights are granted by the delivery of this document or the disclosure of its content. This document shall not be reproduced or disclosed to a third party without the express written consent of AIRBUS DEUTSCHLAND GmbH. This document and its content shall not be used for any purpose other than that for which it is supplied. The statements made herein do not constitute an offer. They are based on the mentioned assumptions and are expressed in good faith. Where the supporting grounds for these statements are not shown, AIRBUS DEUTSCHLAND GmbH will be pleased to explain the basis thereof.


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