International Project WASIS
Title: " Composite fuselage section Wafer Design Approach for Safety Increasing in Worst Case Situations and Joints Minimizing"
Planned Project Duration - 42 months (From January 2011 г to June 2014).
Aeronautics is a key asset for the future of Europe, but nowadays the industry has to face the challenge of “More Affordable, Safer, Cleaner and Quieter” while at the same time accounting for a demand that will triple over the next 20 years. WASIS project aims to rise to this challenge with the development of a composite fuselage structure based on the lattice stiffening concept, optimizing geometrical and mass properties of transition zones of fuselage structural joints. Project overall concept is focused on simultaneous meeting environmental demands and rising safety coupled with design and manufacturing cost-efficiency improvement.
The lattice approach allows composites to obtain more efficient mechanical behaviour, reducing weight and optimizing structure performance, which will be proved by comparative simulations against other approaches.
This will be combined with specially designed semi-loop and micro-pin joining elements to provide the ability of innovative non-regular lattice structure manufacturing, save aircraft weight, avoid fuselage section weakening due to cutting reinforcement fibres.
Furthermore, the structure will also be developed to better withstand worst situation loadings, assessing safety through the large adoption of simulation and virtual testing from the very first design stages to analyze explosions and material damping. Developed innovative fuselage section design will be merged with high-productive filament winding technology to reduce manufacturing costs and time, and samples will be manufactured in order to prove how the different concepts fit together. Complete testing of the samples will be applied to prove the wafer approach. As a result of this project integrated approach – sufficient fuselage weight savings, manufacturing cost/time efficiency and safety increasing are to be achieved.
1 Spain - FUNDACION CIDAUT
2 Greece - UNIVERSITY OF PATRAS
3 Portugal - INSTITUTO DE ENGENHARIA MECANICA E GESTAO INDUSTRIAL
4 United Kingdom - MATERIALS ENGINEERING RESEARCH LABORATORY LIMITED
5 United Kingdom - NETCOMPOSITES LIMITED
6 Netherlands - Advanced Technology Group
7 Belgium - COMITE EUROPEEN DE NORMALISATION
8 Italy - PIAGGIO AERO INDUSTRIES
9 Germany - INSTITUT FUER VERBUNDWERKSTOFFE GMBH
10 Germany - CIRCOMP COMPOSITE MATERIALS
Project state up to the June of 2013:
- basic load-carrying scheme of wafer suselage structure, attachment frames, metal-composite joints are developed;
- technology of carbon-fiber wafer shells and panels manufacturing is worked out and implemented practically;
- FEM of wafer fuselage structure at emergency landing and non-typical impact loads is worked out;
- scheme of wafer panels testing, tooling and testing plan is under way;