Rolls-Royce built a jet engine so powerful that it forced a redesign of the aircraft it powers

Rolls-Royce produces some of the world's most powerful widebody engines, including one of the two engines that power the A380 ...
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New jet engines can produce 1,000 times less soot

In flight tests, a lean-burn engine cut soot about a thousandfold, but tinier exhaust particles that can seed contrails ...