Norwegian investigators have criticised Airbus Helicopters for assumptions made during certification testing of its H145 that left examples fitted with an inlet barrier filter IBF vulnerable to engine failure due to ice ingestion.Airbus Helicopters did not do a thorough enough verification of their assumptions about the IBF system and if they <a href=https://www.cup-stanley.es>stanley taza</a> were still valid during the certification process of the <H>45] D2, says Norways SHT air accident investigation agency.Source: Norwegian Air Ambulance ServiceNorwegian winter conditions can cause icing in IBF systemAt issue are the changes between the C2 and D2 variants of the helicopter, notably more powerful engines, sa <a href=https://www.cup-stanley.es>stanley botella</a> ys the SHT in its final report into a dual engine flame-out on an H145 LN-OOS on 20 November 2021.As part of its certification campaign for the D2 upgrade, Airbus Helicopters performed icing tests using an aircraft equipped with the standard mushroom air intake grid.However, the SHT says no such evaluation was performed on an example fitted with an IBF system, as the assumption was that the C2 testing was still valid .That judgement was based on the IBF being identical on both models.In fact, Airbus Hel <a href=https://www.stanleycup.cz>stanley cup</a> icopters believed the installation of an IBF would decrease the risk of ice build-up thanks to a modified airflow path and proximity to hot engine components.However, flight trials performed by the manufacturer in the wake of the Norwegian incident, showed the reverse was true.The increased airflow from the more Vamv Antonov warns Ilyushin on branding of revamped An-124
聽lettersnewsAn army of colorful umbrellas, in a grid formation, is now strung between buildings on Cross Street in downtown Bangor. This is a good thing. Theyre pretty cool. According to information on the city of Bangors website, the Umbrella Sky Project is meant to be an economic driver, drawing peoples attention from Main Street towards businesses on Columbia Street.As a resident in the downtown area and a business owner, I am all for that. As the cliche goes, a rising tide lifts all boats. But this is only true if were in the same body of water, and perhaps the spirit of Mar <a href=https://www.cup-stanley.us>stanley us</a> y Poppins just made that happen.Meanwhile, look up Center Street and you cannot miss a two-story mural of bees and honey. Ther <a href=https://www.stanleycup.com.se>stanley cup</a> e are a few other murals scattered about, too. And, of course, theres the bright Hopeful signperched on the old Greyhound bus depot. These are all good things.While driving the economy is important, art is also beautiful. It does something great, maybe on a soul level. Thats especially good for those of us in difficult circumstances, perhaps in marginalized communities, who might struggle to find positive things to focus on.To whoever is funding these urban art projects, thank you, and please <a href=https://www.stanleycup.com.se>stanley termosar</a> keep it up.Jason CanniffBangorMore articles from the BDN