SADE research continues

TsAGI is continuing to work as part of the international SADE project (SmArt High Lift DEvices for Next Generation Wing) as part of the European Commission’s 7th Framework Program. The aim of the project is to research «smart» elements for mechanizing the next generation of wings, in order to increase aerodynamic qualities and fuel efficiency, and reduce noise and harmful emissions in all flight modes — particularly take-off and landing.

Within SADE, TsAGI is the organization responsible for a range of computational and experimental work to research a concept for adaptive controls. In particular, the Institute proposed an SDS-construction, which became one of the options for adaptive wing edges — front and rear.

To date, various computational and experimental research has been carried out on samples and special models. In addition, scientists plan to test a demonstrator in the T-101 wind tunnel — a full-scale model of the wing section with adaptive controls. Before the «tunnel» stage, specialists from the TsAGI strength complex should complete strength and frequency testing. The demonstrator is a straight wing with a span of five meters and a 3-meter chord, edged with splitter plates. The controls are fixed to the wing box. They include three adaptive sections of the leading edge and one rigid section of the flap. The angles of deviation of these sections vary during the experiment. The German and Italian partners DLR, EADS and PAI, are responsible for manufacturing the leading edge and the flap.

During the tests, TsAGI specialists will measure the distribution of pressure and the stress-strain state of the model using a strain gauge, and remote optical measurements for the flexibility of elements of the demonstrator model within an angle of attack range of from −5 to 22 and will flow speeds of 30, 40 and 50 m/s.

To date, the experimental production department of TsAGI’s research and production complex has finished making the wing box, the splitter plates and a support mechanism for the demonstrator model. Three sections of the adaptive leading edge have also been supplied and assembly is underway. Delivery of the flap and final assembly of the model is planned for April. The scientists tentatively plan to carry out tests in the wind tunnel in June.