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A Fine Balance - Episode 2
BBC Radio 4


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Flying at many times the speed of sound has been an elusive goal of aeronautical engineers for many years. Gareth Mitchell looks at how near we are to achieving hypersonic flight.

Producer: Julian Siddle.

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30 minutes

Last on

Wed 7 Dec 2011 21:00

Inside Science

BBC Inside Science

Adam Rutherford explores the research that is transforming our world.

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