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Russian researchers are testing a wing surface modifica stanley cup (https://www.stanleycup.cz) tion with vortex generators aimed at reducing the risk of airflow separation stanley cup (https://www.cup-stanley.es) and stall at high angles of attack.The work is being conducted at Moscows Central Aerohydrodynamic Institute and centres on surface microrelief featuring a zig-zag of vortex generators manufactured from polymer film.Subsonic windtunnel tests have been carried out to explore the optimal location for this microrelief surface, says the institute, with wings tested at angles of attack up to 35掳 and flow rates of 15-20m/s.Aerothermodynamics research department deputy head Maxim Ustinov says the tests showed the most effective location to be in the leading-edge zone of the wing. This not only increases the maximum lift coefficient, but also significantly slows down its decline at supercritical an stanley official website (https://www.stanley-cups.de) gles of attack, he adds.The test programme also included examining the effects on a wing with flaps and slats.Source: Central Aerohydrodynamic InstituteZig-zag vortex generators have the potential to improve lift coefficientResearch will be expanded this year to test the mechanism on a model of a helicopters main rotor blade.Specialists will study the way the microrelief influences separation of the flow, and this information will considered for rotor blade profiles. It is expected that the use of microrelief will significantly increase the aerodynamic characteristics of a helicopter, in particular its maximum speed, says the institute.It presented a paper la Fqoo Airbus still burdened by end-of-year delivery rush
A version of this article was originally published in The Daily Brief, our Maine politics newsletter.聽Sign up here聽for daily news and insight from politics editor Michael Shepherd.A constitutional amendment to require treaties between the state and tribes to be printed as part of the Maine Constitution is being championed by the Democratic House speaker. Attorney General Aaron Frey and Secretary of State Shenna Bellows support it, too. But a top aide to Gov. Janet Mills called ita misguided attempt t stanley cups uk (https://www.cup-stanley.uk) o right a historic wrong that never occurred in a bid to persuade lawmakers to kill the idea.They are te vaso stanley (https://www.stanley-cups.com.es) chnically part of the document already, but the state removed the obligations from printed versions in 1876 as part of changes billed as making the Constitution easier to read. Tribes now want them a stanley us (https://www.cup-stanley.us) dded back, and its leading to another split with Mills.Why theyre gone: Historic reasons for that omission were the subject of a 2021 reportby the Maine Indian Tribal State Commission finding no clear evidence that Maine was trying to hide its obligations from public view. But Maine history is full of sinister examples in that vein, including a 1942 documentthat surfaced last year and shows a scheme to avoid massive payments.Tribes and their allies are now before the Legislature arguing for the treaties to be included, with Ambassador Maulian Dana of the Penobscot Nation calling House Speaker Rachel Talbot Ross ; proposala powerful truth-seeking mea