Single-family houses and townhouses in Upper Marlboro development
In the early 19th century, farmers planted the rolling land at the intersection of Ritchie Marlboro Pike and Westphalia Road in Upper Marlboro with acres of tobacco. Today, a weathered gray tobacco barn built by the Talburtt family around 1825 still stands, although little else of the area's agrarian past remains.
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Geek Wire
39 minutes ago
- Geek Wire
AeroTEC teams with Pratt & Whitney to work on hybrid-electric plane in Moses Lake
An artist's conception shows the RTX hybrid-electric demonstrator in flight. (RTX Illustration) Seattle-based AeroTEC says it's been selected by Pratt & Whitney Canada to lead the modification and flight test of an experimental hybrid-electric demonstrator aircraft at its Flight Test Center in Moses Lake, Wash. The RTX demonstrator is a De Havilland Canada Dash 8-100 aircraft that will be modified to use a thermal engine built by Pratt & Whitney Canada and a 1-megawatt electric motor developed by Collins Aerospace. Both Pratt & Whitney and Collins are RTX businesses. Pratt & Whitney and its partners have also developed a mobile charging unit for the plane. The 200-kilowatt-hour batteries will be supplied by H55, a Swiss spin-off from the Solar Impulse venture that successfully sent a solar-powered airplane around the world in 2015-2016. H55 is supported by RTX Ventures, the venture capital arm of RTX. The RTX hybrid-electric demonstrator program is targeting up to 30% improved fuel efficiency compared to today's regional turboprops. In-flight demonstrations could help open the way for the propulsion system to be used on multiple platforms in the future. This week's announcement of AeroTEC's involvement came in conjunction with the Paris Air Show, where Pratt & Whitney announced that it tested the integrated propulsion system and batteries to full power on the ground in Quebec. AeroTEC said modification design will be supported by engineers at its Seattle headquarters, while all flight tests and modifications will take place in Moses Lake. 'AeroTEC's mission is to accelerate the evolution of aerospace, and our collaboration with Pratt & Whitney Canada on the RTX Hybrid-Electric Flight Demonstrator project is a clear example of that commitment,' AeroTEC President Justin Morigeau said in a news release. 'In our role leading the modification and flight testing of the experimental aircraft, we're proud to support the demonstration of cutting-edge technologies that will define the future of sustainable flight.' AeroTEC has been involved in similar aircraft conversion projects over the years. In 2020, it helped Everett, Wash.-based magniX put an all-electric Cessna Grand Caravan airplane through its paces. Another collaboration with magniX led to the test flight of a hydrogen-powered De Havilland Dash 8-300 for Universal Hydrogen in 2023. AeroTEC also supported the flight test of Eviation's all-electric plane in 2022. All those flight tests took place in Moses Lake. AeroTEC is currently working with magniX on a NASA-funded project to turn a 40-year-old De Havilland Dash 7 turboprop into a hybrid-electric demonstrator aircraft.
Wall Street Journal
an hour ago
- Wall Street Journal
‘Just Good Manners' Review: Mind Your Mores
In the James Cameron film 'Titanic' there's a brief scene in which a young girl gets poked in the back so that she'll sit up straight, like a lady. Viewers are given to understand that they're seeing how etiquette crushes the spirit, the way a corset crushes the ribs. We are a long way from 1997, when the movie came out (let alone from 1912, when the ship sailed and sank), and the likelihood today of any young person getting lessons in deportment has dwindled. Slouching is in, formality is out, and the sight of more than two forks on the table is enough to make a dinner guest break out in hives. Yet people persist in wanting to know and understand the correct forms, even if their details seem antiquated or obsolete. Who, amid widespread cultural flux, can advise them? Emily Post became the American maven of manners in 1922, advocating gentility and founding a dynasty that is still consulted by the socially anxious to this day. Judith Martin became a hit as Miss Manners in the newspaper column she launched in 1978. In the U.K., Debrett's has long advised Britons on such matters.
Associated Press
an hour ago
- Associated Press
AUTO RACING: Shane van Gisbergen locks in a playoff spot as NASCAR rolls into the 'Tricky Triangle'
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