Boeing is working on a new flat plane that would be able to take off and land vertically using dozens of new pulse jets they call Pulse-Ejector-Thrust-Augmentors. Of course, these things were originally created by Nazis.
While the first working pulse jet was patented by Russian engineer V.V. Karavodin, it was German engineers Georg Madelung and Paul Schmidt who actually made the first efficient design apt for flying.
The design was adopted by Goering's Luftwaffe for the V-1 bombs that terrorised England during WW2. Fortunately, their bloody Buzz Bomb's engine was inefficient, noisy, prone to failure and had a very low life expectancy - not to mention that they were slow enough to be shot down by British interceptors - unlike the ballistic rocket-based V-2 created by another Nazi, the father of the Saturn rocket Wernher von Braun.
Boeing claims that their PETA technology doesn't have any of the inconveniences of Madelung and Schmidt's design. The design seems so solid that the Pentagon is actually contemplating the possibility of using them to build a large flat VTOL aircraft capable of transporting tanks and troops with ease. A prototype may soon see the light of day.
Better than current VTOL designs
Unlike turbofans, the pulse jet engine has no moving parts at all. Its core - situated at the top of the engine - generates shockwaves via a subsonic combustion of fuel. Each shockwave forces hot exhaust air out of the tube, creating a pressure differential that fills the engine with cold air. New fuel then mixes with that air through computer-controlled injection similar to the technology used in cars, starting a new shockwave. This process is repeated at very high speeds, providing with the thrust needed to lift the aircraft from the ground.
The PETA cell is encased in a thrust augmenting duct that channels more air into the flow, increasing its power. Every cell is independently controlled and can be grouped on the belly of any aircraft. And since each cell has its own direction controls, you can basically manoeuvre the ship while taking off or landing in any way you want - even if it's basically a large flat brick like the Millennium Falcon. Then, when the ship is in the air, horizontal thrust engines take over.
Unlike other VTOL designs, like the Harrier, Osprey or the VTOL version of the F-35 Lightning II, the pulse jet cell technology seems a lot simpler and efficient. It doesn't mix the vertical and horizontal thrust, so the PETA-based aeroplane designs would be a lot easier and cheaper.
And Boeing claims that, since PETA cells have no moving parts, they are easy to maintain and have very low failure rates. They say they are very inexpensive to build and they are insensitive to turbulence and debris. Not only that, but they can be part of the frame of the aircraft itself - reducing weigh - and be distributed in such a way that they are redundant and tolerant to battle damage. [MORS (PDF) via The Dew Line]