Defence giant BAE Systems to buy a stake in Britain's Reaction Engines, which is developing revolutionary SABRE engines for ultra-fast aircraft How an aircraft fitted with the SABRE engines might look ------------------------------------------------------------------------------------------------------------------------------------------- Hypersonic air travel and cut-price satellite launches will move a step closer when BAE Systems buys a stake in a UK company developing engines able to power aircraft at 2,500mph and into space. The FTSE 100 group is set to purchase 20pc of Oxfordshire-based Reaction Engines for £20.6m, in a deal that will see the defence giant’s expertise applied to research on the privately-held company’s engine, which combines...