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Flash flights

Flash flights

作者:屠渚琴  时间:2019-02-27 06:03:02  人气:

By Duncan Graham-Rowe THE maiden flight of a paper aeroplane might not seem like much of a technological achievement, but for a team of Japanese researchers it could herald the dawn of a new way of flying: laser propulsion. The paper plane in question is no ordinary piece of origami. Attached to its tail is a lightweight propulsion system that uses energy from a ground-based laser to propel the aircraft forward. If the technique, called laser ablation, is scaled up to full-sized planes it should provide enough thrust to accelerate a 10-tonne plane to supersonic speeds,