Boats are propelled forward by various power sources, such as human power, wind power, and internal combustion engines. Nowadays, even electric boats are coming onto the scene. Propulsion for ...

I remember my Dad bought me an RC plane for my birthday one year. It was made of foam and plastic, was battery-powered, and had a little red propeller on it. I think my longest flight ever covered a ...

[CovaConcepts], who has a background in motorsports, has been busy designing an unconventional radio-controlled watercraft she calls the HydraJet. There are two key design decisions that make the ...