S. Ameduri, A. Concillo, A. Gianvito, M. Lemme, M. Castanon Alvarez, J. San Millian Fiel

The improvement of aircraft efficiency has always represented a desired and challenging goal. The large amount of efforts spent on this specific topic demonstrates the deep interest in the different aspects contributing to the over-all efficiency: aerodynamic, aeroelasticity, stability, manoeuvrability and so on. Thus, according to the specific branch taken into consideration, several technical solutions have been defined and implemented; some examples may be represented by wing sections optimised for specific flight regimes, suitable wing and tails geometries oriented to better aeroelastic performance, servo mechanism designed to assure a wider manoeuvrability range. Despite of benefits offered to the specific problem they are oriented to, however, some of these solutions may result inefficient or even counterproductive over the design working range. For this reason, solutions able to fit different external conditions are actually being taken into account. The main goal of the "Active Aeroelastic Aircraft Structures (3AS)" European Frame is represented by the development of innovative architectures to positively affect aircraft overall efficiency. The basic idea of the Project is to take advantage of aerodynamic and inertial loads due to undesired aeroelastic problems, to suitably deform aircraft components, so that the most efficient configuration for each flight condition may be reached. A fundamental role into this scenario is played by the possibility of controlling torque rigidity of movable parts, like ailerons, equilibrators, rudders and so on. As a matter of fact, the stiffness control may assure the achievement of desired deflections under assigned aerodynamic and inertial loads. Thus, many efforts have been spent inside the Project on the design and realisation of devices able to control the torque stiffness of the all-movable tail of the EuRAM wind tunnel model. In this work, achievements obtained by CIRA, INTA and VUM, involved in the design and the manufacturing of adaptive devices are presented.

International Forum on Aeroelasticity and Structural Dynamics, 2005, München

Conference Paper

englisch

21,0 x 29,7 cm, 11 Seiten

DGLR-Bericht, 2005, 2005-04, International Forum on Aeroelasticity and Structural Dynamics 2005; S.1-11; 2005; Deutsche Gesellschaft für Luft- und Raumfahrt - Lilienthal-Oberth e.V., Bonn

NA

in getr. Zählung;

aeroelasticity, control surfaces

Bibliothek

2005