Ekranoplan EK-12P Ivolga

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I think [some designs](http://i.imgur.com/WVPoaDz.jpg) seem under-powered because they hide the “lift” engines in the nose to get a cleaner silhouette once under way. Once the pictured plane is underway only the turboprop(yet another application of the [NK-12](http://en.wikipedia.org/wiki/NK-12)) is in use and the small engines are closed off. (Notice the intake hole on top of the nose and the downward pointing exhaust on the side just forward of the wings) The inherent efficiency of the design allows for seemingly small forward thrust relative to the weight and the engine at the rear is only used for propulsion once under way. The engines at the nose get it out of the water and a major portion of their thrust is directed under the wing to establish an air cushion and get separation. Once the cushion is established they’re not really needed and a more efficient prop or jet placed in clean air is much more efficient

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