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Page 12 - சர்வதேச சபை ஆன் சுத்தமான போக்குவரத்து News Today : Breaking News, Live Updates & Top Stories | Vimarsana

SST Redux: Are The New Supersonic Jets Friendlier To The Planet?

SST Redux: Are The New Supersonic Jets Friendlier To The Planet? P. Barnes, Midlothian, TX Nearly 20 years have passed since the last flight of the Concorde, the first supersonic passenger-carrying commercial airplane (or supersonic transport, SST). The aircraft cruised the Queen of England and the ultra-wealthy across the seas at Mach 2 speed, or 1,350 mph, while soaring at an altitude of 60,000 feet. In 1996, the Concorde achieved its fastest flight from New York to London in under three hours. Now a new wave of supersonic flight may be on the horizon with the recent partnership between United Airlines and Denver-based Boom Supersonic. In June 2021, United Airlines announced plans to purchase 15 of Boom Supersonic’s first commercial supersonic jet, the Overture. Boom plans to engineer the Overture to fly up to 88 passengers at a speed of Mach 1.7, or 1,300 mph, at 60,000 feet. Most flight times will be cut nearly in half: Traveling from Paris to Montreal will only take thre

ICCT report says EV GHG emissions are lower by far than any other fuels : Biofuels Digest

The detailed findings can be summarized straightforwardly. Only battery electric vehicles (BEVs) and fuel cell electric vehicles (FCEVs) powered by renewable electricity can achieve the kind of deep reductions in GHG emissions from transportation that comport with the Paris Agreement’s goal of keeping global warming well below 2 °C. There is no realistic pathway to that goal that relies on combustion-engine vehicles, including hybrids of any sort. The study, carried out by the International Council on Clean Transportation (ICCT), analyzes present and projected future GHG emissions attributable to every stage in the life cycles of both vehicles and fuels, from extracting and processing raw materials through refining and manufacture to operation and eventual disposal. The analysis was performed separately and in depth for the European Union, the United States, China, and India, and captured the differences among those markets, which together account for about 70% of new car sales w

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