| 摘要 |
An aircraft with a jet engine, in which air resistance acting on the front side of the aircraft is reduced to save energy during its flight. An air feeding duct (7) running from the head of a fuselage to the vicinity of an ejection opening of the jet engine is provided in the fuselage. Further, at the fuselage are provided a sensor for sensing the air pressure or airflow speed in the air feeding duct and flow speed control means for controlling the flow speed of air in the air feeding duct. The invention is applied to aircrafts with jet engines.
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