A ll aircraft engines need to be put through rigorous tests before they are sold. What will happen in case of a bird hit, or if a fan blade disengages? Done physically, each of these tests can cost up to $15 million.

And each test has to be carried out under different conditions. This can burn hundreds of millions of dollars.

General Electric, the world's leading maker of aircraft engines, carries out all such tests on computers in an industrial estate in Bangalore at a fraction of the cost and time.

As a result, GE hopes to roll out four or five new engines over the next five years. An engine can take up to 20 years to develop. Nobody has ever flooded the market with so many engines in a span of just five years.