In short, the Douglas DC-7 is considered the last major piston-engine, propeller-driven airliner in the US, with surviving ...

Noted historically by high-ranking military personnel as a "billion dollar blunder," the B-36 Peacemaker was a Cold War-era bomber with a litany of issues.

However, in 1997, NASA selected Continental Motors to develop a new engine for the General Aviation Propulsion program. The goal of GAP was to build an inexpensive piston engine that did not rely ...

The 'first generation' jet engine put out about 1,600lbs of thrust at sea level, and pretty fuel thirsty. The aircraft's piston powerplant was a dependable Wright R-1820 'Cyclone' radial engine ...

Piston engines run efficiently at 2,000 rpm; the four-lobed cams reduce the piston speed to 500 rpm at the rotor, ideal for smaller (up to 2,000 pounds) and unmanned helicopters.

Right now, small propeller engines typically run on 100-octane aviation gas. To get the octane levels that high, lead is added to the fuel.

By Jerry Siebenmark The Wichita Eagle Updated July 14, 2015 6:16 PM ...