NASA invests in ninja plane
超音速飞机仿忍者(图)

NASA has approved a $100,000 investment to allow for further development of a new type of aircraft called the supersonic plane concept, foreign media reported. The plane looks something like a 4-cornered ninja (忍者) throwing star with 2 sides that are extended out while the other 2 sides are far shorter.(See photo)
据外媒报道，美国宇航局近日投资10万美元支持一项"超音速概念飞机"的研究。这种飞机外形像忍者的四星镖，一对机翼长，另一对机翼短。(见图)

[飞行机理]
When it takes off, it has to have the longer wings on either side, because it needs to use that wingspan to gain enough momentum to get off the ground. But the large wingspan creates too much drag for the plane when it reaches supersonic speeds. So the plane rotates 90 degrees so that it is longer and thinner than when it took off.
起飞时，较长机翼位于两侧，宽大的翼幅产生足够动力助飞机飞离地面。一旦飞机进入超音速状态，过宽的翼幅增加了飞行阻力，这时飞机水平旋转90度，飞机以"瘦长"姿态继续前进。

*以上新闻由ChinaDaily双语手机报提供

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