Air Force

摘要

It may be a quirk of nature, or it may just be a symptom of how engineering development works: separate teams tackling the same problem come up with different solutions and the technologies have to compete in the market to see which will be successful. It has happened again and again, from communication protocols for wireless sensors, to the more familiar examples from our homes: Mac versus PC and VHS versus Betamax. The latest of these competitions is set to begin in the air, as aero-engine manufacturers tussle for orders for the new generation of cleaner engines.