Watch a seamless cycle of takeoff, underwater cruise, and skyward reemergence in this student-built hybrid drone.

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

Hartzell earns FAA Part 35 certification for its next-generation propeller, which is tailored specifically for advanced air ...

Over the past few years, labels such as DJI have pushed drones into the mainstream. If you look closely, you'll notice that a majority of them have four propellers, while helicopters have fewer of ...

Propellers are designed to take a fluid, generally air or water, and use a rotating motion to push that fluid through. They're evolutions, in a sense, from the Archimedes' screw, which was likely ...

On fixed wings I have used end-grain hard balsa plugs, recessed a bit so the head of the bolt will be below the top surface of the wing. The plug needn’t be so wide, maybe 1/2 to 3/4 inch in ...

The propellers on some World War II-era bombs were meant to delay the bombs' detonation without requiring direct remote activation. World War II was a showcase of major new scientific developments ...

this is way cool, but see if you can find some video of how F4-U propellers were made! they took a solid rod of aluminium, bored it out, rolled it flat, then silver soldered the edges!

THE screw-propeller was practically applied to steamships by John Ericsson and Francis Petit Smith about seventy years ago. It speedily became formidable rival to the paddle-wheel. Long ago it ...

Explore why this boat features propellers at the front, offering unique insights into its design and functionality. Featuring ...