Innovation: Smart Aircraft In Emergency Situations

Last update: 30.06.2013
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Keywords: 
information processing, safety, aerospace technology, transport, accident prevention, information systems, software engineering
Ditching analysis is requested for large transport aircraft by EASA. The respective requirements are specified under 'CS 25.801 Ditching'. They are primarily devoted to a minimisation of risks for immediate injuries and the provision of fair chances for an evacuation. A significant part of average air travel is over water and historically a planned or unplanned water-landing event occurs grossly speaking every 5 years. This proposal directly addresses areas "7.1.3.3: Aircraft Safety" and "7.1.4.1: Aircraft Development Cost". The primary outcome of the SMAES project will be advanced methodologies and simulation tools to support aircraft development from pre-project phase to certification.

These will enhance future innovation in aircraft design through ensuring that innovative designs are compliant with safety requirements The key developments addressed in the work programme are:
1. Improved models for the calculation of ditching loads including both analytical and detailed fluid dynamics models. Inclusion of the effects of the complex flow physics in ditching is critical to prediction of ditching loads.
2. Reliable and predictive aircraft models for structural behaviour under dynamic fluid loads.
3. Demonstration of the methods on representative future aircraft design concepts.

The consortium brings together aircraft manufacturers, analysis software developers, research organisations and universities. Together the partners form a strong team covering the required expertise in aircraft design, numerical methods and simulation, ditching analysis and supporting experimental methods to achieve the project objectives.
During this reporting period, work has been ongoing within all three main technical work packages (WPs) in SMAES. The main achievements in this period are:
- development of improved semi-analytical analysis tools;
- development and investigation of approaches to minimise the computational cost of detailed simulations;
- development and implementation of models for aerated water and cavitation within the detailed numerical tools, investigation of modelling approach for suction within the PAMCRASH code;
- development of multi-scale modelling approaches towards treatment of local structural deformation and failure within explicit whole aircraft models;
- definition of the set of common test problems that will be used for verification and comparison of the different analysis approaches and tools;
- definition of industrial demonstration cases;
- design of guided impact facility at INSEAN: this facility will provide unique;
- experimental data to the project covering the high-speed interaction of deformable, structures with water, construction of the facility has begun and will be completed during the first part of the next period;
- definition of the experimental campaigns that will support the industrial demonstration cases: these campaigns will provide material and structural characterisation data to support analysis;
- development of improved analysis tools will continue during the next reporting period.
The aeronautics design community requires a set of simulation tools for ditching that are appropriate for use at the different stages of the design process. The overall objective of the SMAES project is to develop a set of simulation tools that will permit cost-effective design and entry-into-service of aircraft able to protect its occupants in emergency situations. These tools will allow manufacturers to:
- improve models to reduce test costs;
- reduce calculation and design costs;
- increase innovation towards safer, lighter and lower cost structures;
- anticipate future substantiation requirements.

Of special interest is the behaviour of future composite structures compared to classic metallic ones, as use of composites may lead to an increased danger of material failure with subsequent water ingress due to their inherently brittle behaviour with low failure strains. In support of this, SMAES will improve the existing simulation tools so that they are capable of more accurately handling the complex behaviour of the fluid and fluid-structure interaction in the water impact analysis problem.

Expected results:

- Improved semi-analytical water impact models: the low computational cost of these methods makes then well suited to parametric studies and early stage design calculations.
- Improved detailed numerical simulation tools capable of simulating both the overall aircraft motion during ditching and the resulting structural deformation.
- New experimental facility suitable for conducting high speed (in excess of 30 m / s) water impact experiments.
- New experimental data including the response of metallic and composite structures to fluid impact.
- Demonstration of improved tools on industrially lead aircraft design cases.

Potential impact:

- Contribution to growth and competitiveness of the European aeronautics industry: the improved tools and knowledge that will result from the SMAES project will support the design and entry into service of innovative and optimised aircraft designs that are able to provide the expected level of safety.
- Improved understanding of the complex physical phenomena occurring during aircraft ditching.
- Enhanced methodologies and software tools for the analysis of aircraft ditching.
- The transfer of relevant knowledge and expertise between universities, research centres and the European aeronautical industry.
- New experimental high-speed water impact facility available for future projects.

The tools and knowledge that will result from SMAEs have additional applications to the ditching of fixed wing aircraft considered within the project. Ditching is also an important case for other aircraft types such as rotorcraft, and the fluid-structure issues addressed are relevant marine applications such as high-speed planning craft.

List of websites: http://www.smaes.eu

Collaboration sought: N/A

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This innovation is the result of the project

Title: Smart Aircraft In Emergency Situations

Acronym: 
SMAES

Runtime: 
01.02.2011 to 31.01.2014

Status: 
completed project

Organisations and people involved in this eco-innovation.

Please click on an entry to view all contact details.

CRANFIELD UNIVERSITY

(United Kingdom)

Role in project: Project Coordination

Contact person: Dr. CAMPBELL James Charles Anthony

Website: http://www.cranfield.ac.uk

Phone: +44-123-4754613

Contact

AIRBUS OPERATIONS GMBH

(Germany)

Contact person: Mr. TEMMEN Holger

Website: http://www.airbus.com

Phone: +49-4074373238

Contact

ALENIA AERMACCHI SPA

(Italy)

Contact person: Dr. INVERNIZZI Donatella

Website: http://www.aermacchi.it

Phone: +39-0818874640

Contact

ALTAIR ENGINEERING FRANCE SARL

(France)

Contact person: Mr. GUGLIELMINOTTI Mauro

Website: http://www.altair.com

Phone: +33-141330990

Contact

CENTRO ITALIANO RICERCHE AEROSPAZIALI SCPA

(Italy)

Contact person: Mr. TAMMARO Federico

Website: http://www.cira.it

Phone: +39-0823623404

Contact

CONSIGLIO NAZIONALE DELLE RICERCHE

(Italy)

Contact person: Dr. IAFRATI Alessandro

Website: http://www.cnr.it

Phone: +39-0650299296

Contact

DASSAULT AVIATION SA

(France)

Contact person: Ms. BAUCHIÈRE Svetlana

Website: http://www.dassault-aviation.com

Phone: +33-147115082

Contact

DEUTSCHES ZENTRUM FUER LUFT - UND RAUMFAHRT EV

(Germany)

Contact person: Mr. HEINZ Andreas

Website: http://www.dlr.de

Phone: +49-7116862339

Contact

EADS - CONSTRUCCIONES AERONAUTICAS S.A.

(Spain)

Contact person: Mr. MARTIN MARTINEZ Daniel

Website: http://www.eads.net

Phone: +34-915855568

Contact

ESI GROUP S.A.

(France)

Contact person: Dr. KAMOULAKOS Argiris

Phone: +33-141735800

Contact

ISTITUTO NAZIONALE PER STUDI ED ESPERIENZE DI ARCHITETTURA NAVALE

(Italy)

Contact person: Dr. IAFRATI Alessandro

Phone: +39-0650299296

Contact

OFFICE NATIONAL D'ETUDES ET DE RECHERCHES AEROSPATIALES

(France)

Contact person: Mr. BROCHIER Vincent

Website: http://www.onera.fr

Phone: +33 1 4673 4929

Contact

TECHNISCHE UNIVERSITAET DRESDEN

(Germany)

Contact person: Mr. KREIGENFELD Sven

Phone: +49-35146339744

Contact

TECHNISCHE UNIVERSITAET HAMBURG-HARBURG

(Germany)

Contact person: Ms. SCHOFIELD Monica

UNIVERSITY OF EAST ANGLIA

(United Kingdom)

Contact person: Ms. MOULTON Tracy

Website: http://www.uea.ac.uk

Phone: +44-1603591482

Contact

UNIVERSITY OF PATRAS

(Greece)

Contact person: Prof. LAMPEAS George

Website: http://www.upatras.gr

Phone: +30-2610969498

Contact