Jet engines work on the "suck ... Finally, the hot exhaust gases exit the engine via a tapering exhaust nozzle. Just as putting your thumb over the end of a hosepipe (reducing the exit aperture ...

From there, it's pushed into the combustion chamber, where the hot air is mixed with jet ... or nozzle, propelling the aircraft forward. Every aircraft requires a different kind of engine.

Under the hot lights of a White House stage and the glare of brusque tycoons from ABC's Shark Tank, Felipe Gómez del Campo had 60 seconds to pitch his invention, a jet engine nozzle that reduces fuel ...