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Multidisciplinary Design in Aeronautics, Enhanced by Simulation-Experiment Synergy
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering.
2006 (English)Doctoral thesis, comprehensive summary (Other scientific)
Abstract [en]

This thesis covers some aspects of current aircraft design, and presents how experiment and simulation are used as tools. Together they give enhanced effects over employing either one separately. The work presented has been produced using both simulations and experiments. An overview of aircraft design tools is presented, together with a description of their application in research. Participation in two major design projects, HELIX and the Rescue wing, gave an opportunity to combine traditional experimental and computational tools. They also serve as a platform for developing two new tools, the vortex lattice program Tornado and the DoTrack camera based wind tunnel measurement system.

The HELIX project aimed at exploring new, unconventional high-lift systems, such as blown flaps, flaperons and active vortex generators. The concepts were investigated with an array of conceptual design tools, ranging from handbook methods to high Reynold’s number wind tunnels. The research was done in several stages. After each stage the concepts failing to reach specifications were discontinued. The active vortex generator concept is followed in detail from the first phase in the HELIX project, and was finally evaluated by full computational fluid dynamics (CFD) and wind tunnel testing.

The lessons learned in HELIX were applied to the Rescue wing project, where a kite balloon system for emergency localization was developed. The project is truly multidisciplinary, and both experiment and simulation had to be used in close conjunction. Lack of appropriate methods for measurement and analysis of this kind of device meant that new methods had to be developed.

Recent experience of academia working closely together with industry has shown substantial benefits to all parties involved. The synergy of computer modeling and simulation with experiment plays an important role in the common collaborative modus operandi of academia and industry. In particular, the later stages of aeronautic educational programmes should actively pursue such collaboration.

Place, publisher, year, edition, pages
Stockholm: KTH , 2006. , xi, 43 p.
Series
Trita-AVE, ISSN 1651-7660 ; 2006:25
Keyword [en]
Aeronautics, conceptual design, design, high lift systems
National Category
Vehicle Engineering
Identifiers
URN: urn:nbn:se:kth:diva-3996ISBN: 91-7178-373-3 (print)OAI: oai:DiVA.org:kth-3996DiVA: diva2:10310
Public defence
2006-06-08, F3, Lindstedsvägen 26, Stockholm, 10:00
Opponent
Supervisors
Note
QC 20100910Available from: 2006-05-29 Created: 2006-05-29 Last updated: 2010-09-10Bibliographically approved
List of papers
1. Helix, Innovative Aerodynamics High-Lift Concepts
Open this publication in new window or tab >>Helix, Innovative Aerodynamics High-Lift Concepts
2004 (English)In: ECCOMAS 2004 - European Congress on Computational Methods in Applied Sciences and Engineering, 2004, 1-19 p.Conference paper, Published paper (Refereed)
Abstract [en]

The European commercial aerospace industry has witnessed an unprecedented growth over the last 15 years through the introduction of new, highly competitive aircraft products. To maintain growth and increase the market share of the European commercial aircraft industry, new aircraft products must be launched over the next decade. Simply developing new aircraft will be insufficient to maintain Europe's current strong position. However, leaps to truly unconventional aircraft configurations and concepts, such as flying wings, are clearly the long-term future. Currently, civil transport aircraft derive their low speed performance from the use of a basic mid 1900's concept, the flap and slat system. Significant research has been directed towards performance improvements of this established and 'ageing' high-lift system. HELIX looks to explore a range of novel High-Lift concepts for low speed aerodynamic performance for conventional transport aircraft configuration.

Keyword
CFD, HELIX, High-lift aerodynamics, Innovative concepts
National Category
Vehicle Engineering
Identifiers
urn:nbn:se:kth:diva-5803 (URN)2-s2.0-84893477253 (Scopus ID)
Conference
European Congress on Computational Methods in Applied Sciences and Engineering, ECCOMAS 2004, Jyväskylä, Finland, 24-28 July 2004
Note

QC 20141210

Available from: 2006-05-29 Created: 2006-05-29 Last updated: 2014-12-11Bibliographically approved
2. The Rescue Wing: Design of a Marine Distress Signaling Device
Open this publication in new window or tab >>The Rescue Wing: Design of a Marine Distress Signaling Device
2005 (English)In: Proceedings of MTS/IEEE OCEANS, 2005, 2005, 1640129- p.Conference paper, Published paper (Refereed)
Abstract [en]

We present a multidisciplinary scientific analysis combining aerodynamics, flight mechanics and electromagnetics aiming at the design of a new marine distress signaling device. We show how computational fluid dynamics (CFD) and computational electromagnetics (CEM) techniques have been used to assist In the design of both the flight characteristics and the radar performance of the device, as well as how its radar signature compares to popular radar reflectors used on yachts and sailboats.

Series
Oceans-IEEE, ISSN 0197-7385
Keyword
Aerodynamics, Computational fluid dynamics, Electromagnetic fields, Flight dynamics, Radar reflection, Radar systems
National Category
Vehicle Engineering
Identifiers
urn:nbn:se:kth:diva-5804 (URN)10.1109/OCEANS.2005.1640129 (DOI)000238978702089 ()2-s2.0-33947221013 (Scopus ID)
Conference
MTS/IEEE OCEANS, 2005; Washington, DC; 18 September 2005 through 23 September 2005
Note
QC 20100910Available from: 2006-05-29 Created: 2006-05-29 Last updated: 2010-10-04Bibliographically approved
3. Investigating Active Vortex Generators As A 
Open this publication in new window or tab >>Investigating Active Vortex Generators As A 
2006 (English)In: ICAS 2006, Hamburg, Germany, 2006., 2006Conference paper, Published paper (Refereed)
National Category
Vehicle Engineering
Identifiers
urn:nbn:se:kth:diva-5805 (URN)
Note
QC 20100910Available from: 2006-05-29 Created: 2006-05-29 Last updated: 2010-09-10Bibliographically approved
4. Single Camera Method for Model Orientation Reconstruction in Wind Tunnel Tests
Open this publication in new window or tab >>Single Camera Method for Model Orientation Reconstruction in Wind Tunnel Tests
(English)Manuscript (Other academic)
National Category
Vehicle Engineering
Identifiers
urn:nbn:se:kth:diva-5806 (URN)
Note
QC 20100910Available from: 2006-05-29 Created: 2006-05-29 Last updated: 2010-09-10Bibliographically approved
5. Numerical and Experimental Study of the Flight Characteristics of a Tethered Kite Balloon
Open this publication in new window or tab >>Numerical and Experimental Study of the Flight Characteristics of a Tethered Kite Balloon
(English)Manuscript (Other academic)
National Category
Vehicle Engineering
Identifiers
urn:nbn:se:kth:diva-5807 (URN)
Note
QC 20100910Available from: 2006-05-29 Created: 2006-05-29 Last updated: 2010-09-10Bibliographically approved
6. How Industry Concepts of Concurrent Engineering Enhances Aircraft Design Education
Open this publication in new window or tab >>How Industry Concepts of Concurrent Engineering Enhances Aircraft Design Education
Show others...
2007 (English)In: Proceedings of the Institution of Mechanical Engineers. Part G, Journal of Aerospace Engineering, ISSN 0954-4100, E-ISSN 2041-3025, Vol. 221, no 2, 175-192 p.Article in journal (Refereed) Published
Abstract [en]

Two student projects are described including the intended goals, the approaches taken, the tools used, and what was learned from the exercises. An international collaborative teaching protocol between Ecole Polytechnique de Montreal and the Royal Institute of Technology (KTH) was exercised in aircraft design education. Poignantly, a novel instructive design process using the analogue of contemporary concurrent engineering practices in industry was implemented. The idea was to strategically assign multi-disciplinary design tasks to each Partner University in accordance with their respective competencies. The university-industry coupling was initiated by request for proposals and corresponding marketing requirements and objectives produced by Bombardier Aerospace in Montreal, Canada. Two MATLAB™-based tools were prominent in facilitating the capstone aircraft design projects. They included: Quick Conceptual Aircraft Research and Design, a computer-aided conceptual design engineering system; and TORNADO, a Vortex-Lattice code for computing aerodynamic characteristics. The result of the two exercises was found to benefit the participating industry, the educational establishments involved, and the students carrying out the projects.

Keyword
aircraft, conceptual, design, education, aerodynamics, stability, control, flight, handling, simulation
National Category
Vehicle Engineering
Identifiers
urn:nbn:se:kth:diva-5808 (URN)10.1243/09544100JAERO127 (DOI)000246867800004 ()2-s2.0-34250761519 (Scopus ID)
Note
7th European Workshop for Aircraft Design Education (EWADE) Location: Toulouse, France, Date: OCT 19-21, 2005Available from: 2006-05-29 Created: 2006-05-29 Last updated: 2017-12-14Bibliographically approved

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