Even if you have never heard of helicopters, you might know the name Sikorsky. They have been making helicopters like Boeing makes planes.
This is the Sikorsky X2, which is already the fastest helicopter in the world. In 1986, the rotorcraft speed record was 249 miles per hour, and the X2 has already surpassed it at 258 mph.
As you can tell from the picture, it has two rotating blades on the top, and I presume that they rotate in opposite directions for stability. I believe that the six-bladed prop on the back is also there for stability as well. I think it is interesting that the blade on the back faces away from the cockpit instead of to the side. I don't think I've seen a helicopter designed like that before, but I'm not exactly a chopper expert.
您想拥有和网易免费邮箱一样强大的软件吗？
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