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This plane has the largest wingspan ever built - and it carries hypersonic aircraft

Discover the incredible story of Stratolaunch's Roc - the aircraft with the largest wingspan ever built. Originally designed ...

Rolls-Royce built an engine so powerful Airbus had to redesign the aircraft around it, and that is where engineering gets expensive

That said, the engine did not force Airbus to scrap a finished jet and start over. The more accurate story is more ...