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Saturday, March 28, 2020
Tags Helicopters

Tag: Helicopters

Bell’s New Design May Make Helicopters Quieter—and Safer

Since helicopters appeared some 80 years in the past, they’ve used a single high-speed tail rotor to counteract the torque of the principle...

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Coronavirus: Abandoned London landmarks seen from above

Among the metropolis's hottest landmarks are devoid of the standard crowds as folks keep indoors to assist fight coronavirus.