TsAGI winds up its participation in MAAXIMUS

TsAGI has successfully completed its participation in the MAAXIMUS project as part of the European Commission’s 7th Framework Program. Employees from the Institute’s science and technology department for static and heat resistance completed all the scheduled work in line with the terms of reference.

The European Commission set up the MAAXIMUS project in 2007. The aim of the project is to perform the necessary groundwork to ensure the most cost effective development and production of composite airframes for passenger aircraft. The project’s consortium includes 57 partners from 18 countries. The project has a budget of 67 million euros.

TsAGI’s main partners in the MAAXIMUS project from the Russian side were the National Institute for Aviation Technology (NIAT), and from the European side — Airbus, DLR, the University of Milan, EADS and FOI.

The project’s participants were given the task of establishing and validating a new approach to the creation of composite constructions for airframes based on comprehensive computer simulation. According to the developers of the project, this approach should significantly (by 10% or more) reduce the time and cost of building airframes.

All the work was carried out on two platforms: virtual and actual. The first is responsible for the development of computer-assisted computational studies, the second — for experimental validation research.

TsAGI was involved in creating the MAAXIMUS virtual platform. The Institute’s specialists were tasked with creating reliable, high-speed algorithms to analyze the stability and load capacity of the airframe’s composite panels. The development of these algorithms is of major practical significance because they will determine the possibility of computing the post-buckling behavior of a number of metal constructions. This will make it possible to significantly reduce their weight by saving on load-bearing materials for thin surfaces. And in operation, a loss in stability and some buckling is permitted when this does not affect the safety of the construction as a whole.

TsAGI scientists developed a two-level method and the corresponding algorithm to analyze the composite panels during the preliminary design of complex airframe sections, taking the non-linear post-buckling behavior of the surface into consideration. The algorithm was successfully validated for a number of reinforced panels made by the European partners. The results of the research were presented at international seminars on the MAAXIMUS, project, and also at ICAS 2010.