Most ships control speed by changing engine power, but vessels with controllable pitch propellers adjust the blade angle instead. This video explains how variable pitch systems generate forward or ...

Add Yahoo as a preferred source to see more of our stories on Google. Kelluu, a Finnish startup, is developing low-cost hydrogen airships that can fly for up to 12 hours. They've recently attracted ...

In 1887 one of the most important experiments in the history of physics took place. American scientists Michelson and Morley failed to measure the speed of the Earth by comparing the speed of light in ...

The famous British Supermarine Spitfire used various propellers during its early service. Rotol Airscrews, Ltd was formed in 1937 as a joint venture of Rolls-Royce and Bristol. The name, a combination ...

It is more fuel-efficient to maintain a steady speed because the total energy used depends on the average air resistance. Since air resistance is proportional to the square of speed, your average ...

When one thinks of the average airplane, odds are that propellers are part of that mental image. They've been a crucial component of airplane construction from the moment air travel found its footing ...

I can't believe that I get to fly a Cessna 182 with a Garmin G1000 instrument panel! Most of my flight time has been in Cessna 152 or a Cessna 172. I have flown in a Piper Cherokee Six - Piper PA-32 ...