Revolutionary space engine system for Skylon tested April 2012 Last updated at 06:38 ET British engineers have begun a crucial series of tests of an experimental engine technology that its designers believe could revolutionise space travel. The Skylon project is a concept for a spaceplane which could fly from runway to orbit in a single stage. The key is a unique design for an engine that operates as a jet and rocket motor combined. The critical component is a specially-designed cooling system to handle the high temperatures of rapidly-flowing air. David Shukman was given exclusive access to the tests at Culham Science Park in Oxfordshire. BBC News - Revolutionary space engine system for Skylon tested http://en.wikipedia.org/wiki/Skylon_(spacecraft) Now this would make space travel cheaper for future space planes.