"This aircraft can take off within 125 meters because a portion of the engine thrust is deflected downwards, " said Dr. Iannelli.

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"We are very pleased that the engine started and continued to thrust, " said Marc Rayman, Deep Space 1's chief mission engineer and deputy mission manager at NASA's Jet Propulsion Laboratory in Pasadena, California.

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With a failed right engine and a malfunctioning left engine that was not generating sufficient thrust, the aircraft quickly lost altitude.

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Indeed, many aviation experts believe AVIC is having problems developing an indigenous engine for the J-11B with the same thrust and durability as the original Russian ones.

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With all the thrust of 8 cylinders and a 6 litre engine they devour the road and the fuel.

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So Boeing is considering various compromises, such as a small extra engine in the tail, to give the aircraft more thrust.

ECONOMIST: Aircraft making

Ingesting this slower air allows an engine to burn its fuel more efficiently while generating the same amount of thrust.

ECONOMIST: The aircraft of the future