It looks like a plane designed for a superhero or an invading alien force. But this sleek, green aircraft could one day be the supersonic jet of the future.
Dubbed the Supersonic Green Machine, the design was submitted by Lockheed Martin as part of an investigation by Nasa into how air travel might look in 2035. Its key innovation is an inverted-V engine which is designed to reduce the effects of sonic boom.
One of the many problems to afflict Concorde supersonic jet was its characteristic sonic boom as it hit Mach 1. Sonic booms occur as sound waves crash into one another as an object reaches the speed of sound. As an object passes through air it creates shock waves at the font and rear.
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