In the previous issue we visited Cornell University’s wind tunnel to see how wind flows around an asymmetric spinnaker. We learned a lot, of course, especially the importance of being dynamic with our ...

The electric solar wind sail is a propulsion system that uses the solar wind proton flow as a source of momentum for spacecraft thrust. The momentum of the solar wind is transferred to the spacecraft ...

Humans have been sailing various seas and oceans for thousands of years, and using boats for potentially even longer than that. But as a species we wouldn’t have made it very far if it was only ...

I HELD ON TIGHT. My job was to hang onto the rope leading to the jib, holding just tight enough so the smaller sail could catch the wind. Seemed easy enough, until I started to lose sensation in my ...