By reducing the high peak in the loads, you could design your wing much lighter. The idea is that – and this is something you have for instance in fighter aircraft – when you fly through a gust you have a very rapid motion of, for instance, your ailerons to alleviate the loads. And that’s an important design parameter. ”The opportunity for the regional aircraft is that the morphing of the wing and the aerodynamic shape of the wing could be controlled by the flight control system, so you have the primary flight controls for the pitch, yaw and roll manoeuvre inputs – but then additionally you have load control alleviation, so that when you fly through a gust you have active control of the loads because, for instance, when you fly fast through a gust it gives a very high load in the bending moment of the wing. There are three distinct but interrelated aspects to the project, focusing around the flight control systems, as Ruud Den Boer, Project Officer at Clean Sky explains: ”The first part is just flying the aircraft, the second part is load control alleviation and the third aspect in the flight control system is to shape the wing in relation to the situation of the aircraft”. The environmental impact of the regional aircraft can be strongly improved with the aim of these technologies” adds Benitez. The intelligence that we can implement in such a system with the improvements in the aerodynamic shapes in wings and fuselage and the improvements in engine performances are crucial in future aircraft design. ”The flight control systems of regional aircraft are the whole set of sensors, actuators and computers which take care of the aircraft while flying. ”The main objective of the Affordable Flight Control System for a Multi-Mission Aircraft project is to show technology maturity of integration of complex structures and systems in a regional aircraft configuration” says Luis Benítez, Clean Sky 2 Technical Manager at the RD Chief Engineering Office of Airbus Defence and Space.
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