A pulsejet sure sounds like it belongs on a spaceship or something, but it's actually one of the most primitive (or at least simplest) types of jet engines there is. The Nazis used pulsejets on their first generation of cruise missile, the V-1, and now Boeing is toying with the idea of getting them to power a VTOL aircraft.

This patent from Boeing reveals some of the new ways that passenger airliners could be made quieter, more efficient, and much much cooler looking.

Not too long ago Boeing unveiled its plans to develop a commercial space capsule. Turns out the company has a grander scheme in mind: to enter the space tourism business itself. The company will follow a Russian model of taking tourists up alongside astronauts.

Boeing has announced its plans to produce a low-cost, high-occupancy passenger capsule called the Crew Space Transportation-100 (or CST-100) vehicle. It'll ride at the nose of rockets just like the capsule that came before it, and it could be ready by 2014.