Controllable, or Variable Pitch Propellers are just one type of propulsion used on ships. Controllable pitch propellers vary ...

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 ...

A Thunder Bay innovator has landed a deal with a U.S. defence contractor that could take his small aviation firm soaring to new heights. Andrew Kondor, president of Aerovate, has sold two units of his ...

It's not really surprising that Wallace Rupert Turnbull isn't better known by Canadians. The New Brunswick engineer was a shy, modest man who made little fanfare about his work. In fact, the story ...