Reach anywhere in the world within four hours? Could you ever imagine that? But this seems possible in next four years time. The stunning 275 foot Skylon space plane developed by UK based company, Reaction Engine Ltd., has successfully tested the new propulsion system called “SABRE” – which burns hydrogen and oxygen like the jet engines, but would function as rocket. The flight would still take off and land like regular airbus. SABRE engine would burn its on-board fuel supply once it reaches speeds of about Mach 5 – Mach number (
or 
) ) is a dimensionless quantity representing the ratio of speed of an object moving through a fluid and the local speed of sound.
The company would need about $400 million in funding to complete the project. The project is expected to be complete in next four years time.
