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MICHAEL PHELAN / LONDONThe US Defense Advanced Research Projects Agency DARPA has conducted flight tests of an unsteady active flow control system on the Bell XV-15 experimental tiltrotor that promises dramatic reductions in downl adidas campus oad forces during hovering. The tests, conducted under DARPA s Micro Adaptive Flow Control MAFC programme, demonstrated that the technology can provide a 14% reduction in download forces on the airframe during hover by controlling the flow of air around the wing. The technology is intended to enable control of large-scale aerodynamic flows using adaptive control techniques with small-scale actuators, such as synthetic micro-jets, micro-electromechanical systems MEMS -based actuators, pulsed-blowing, combustion actuators and smart structu owala ca res. The XV-15 demonstration used small synthetic jets to delay flow separation. DARPA says the tests show that using MAFC, a 25,000kg 55,000lb tiltrotor can carry about 450kg more payload.The goal of the MAFC programme is to demonstrate military applications and develop design software to enable the technology to be used in new aircraft designs. But major technical challenges include the development of robust actuators with the required force, displacement and bandwidth for real applications, and the integration of combustion gas ac adidas samba schuhe tuators, phased plasma actuators, and synthetic jets with MEMS-based flow sensors and adaptive controllers.Further applications could include adaptive lift-on-demand for agile missi Igcd France s Lumi猫re awards unveil mixed bag of nominations

Foxs family sequel Diary Of A Wimpy Kid: Rodrick Rules debuted at number one on an estimated $24.4m as Warner Bros Sucker Punch had to settle for second place.Warner Bros adventure fantasy Sucker Punch from the mind of Zack Snyder opened in second place on $19m while last weekends champion Limitless fell to number three and has amassed $41.3m for Relativity after two weekends.All the other films in the top 10 shunted down one or two places to make way for the new arrivals. R yeti coolers ango crossed $100m through Paramount in its fourth weekend, adding $9.8m for $106.4m. Paulranks seventh on $24.6m after two weekends.In limited release Jane Eyre stands at 41.9m after hydro flask sale three weekends through Focus Features and expanded from 64 into 90 theatres. Anchor Bays crime drama Kill The Irishman expanded from 20 to 41 and stands at $530,000, also after three weekends.Music Box opened French comedy Potiche starring Catherine Deneuve and Gerard Depardieu on $85,000 from seven and TWC launched Julian Schnabels Miralon $65,000 from four.Next weekends wide releases are: Universals family film Hop; Summits thriller Source Code starring Jake Gyllenhaal and Michelle Monaghan; and Film Districts debut release, the Toronto acquisition Insidious. TWC re-releases The Kings Speech in its PG-13 format.Estimated Top 10 North America Mar 25-27, 2010Film Dist / Est wkd gross / Est total to date1 - Diary Of A Wim yeti website py Kid: Rodrick Rules Fox Fox Intl $24.4m 鈥? - Sucker Punch Warner Bros WBPI $19m 鈥? 1 Limitles