Barring the smallest manned airplanes, most aircraft that are pulled around by a prop have variable pitch propellers. The reason for this is simple efficiency. Internal combustion engines are most ...

Barring the smallest manned airplanes, most aircraft that are pulled around by a prop have variable pitch propellers. The reason for this is simple efficiency. Internal combustion engines are most ...

Now that we have definitely arrived in the 21st Century, you'd think that the military with their substantial budgets would have only the latest and most fancy technology flying in the sky. They do, ...

Controllable, or Variable Pitch Propellers are just one type of propulsion used on ships. Controllable pitch propellers vary the angle of each blade to control the amount on thrust produced by the ...