Search results
Results From The WOW.Com Content Network
Wind-powered vehicles derive their power from sails, kites or rotors and ride on wheels—which may be linked to a wind-powered rotor—or runners. Whether powered by sail, kite or rotor, these vehicles share a common trait: As the vehicle increases in speed, the advancing airfoil encounters an increasing apparent wind at an angle of attack ...
The vehicle weighs about six hundred kilograms. [5] According to Jenkins, the light weight and aerodynamic shape of the vehicle allows it to attain speeds three to five times faster than the speed of the wind. [4] Greenbird is the fifth in a series of wind-powered land vehicles that Jenkins had constructed in his efforts to break the speed record.
The vehicle draws power from the faster of the two media in each case and imparts it to the slower of the two: upwind, drawing power from the wind and imparting it to the wheels and, downwind, drawing power from the wheels and imparting it to the rotor: in each case in proportion to the velocity of the medium, relative to the vehicle. [7]
A Cargill-chartered cargo ship fitted with giant, steel sails has set out on its maiden voyage.
A windmill ship, wind energy conversion system ship or wind energy harvester ship propels itself by use of a wind turbine to drive a propeller. They use wind power [1] through a mechanical or electrical transmission to the propeller. Where transmission is electric, storage batteries may also be used to allow power generated at one time to be ...
The turbosail or French turbovoile is a marine propulsion system using a sail-like vertical surface and a powered boundary layer control system to improve lift across a wide angle of attack. This allows the sail to power the boat in any direction simply by moving a single flap at the back of the sail, unlike conventional sails which have to be ...
An auxiliary engine will be used to navigate harbors and provide emergency power. [ 7 ] While the design is meant to be usable for different types of ships and even retrofitted to existing vessels, [ 7 ] the first vessel from the Oceanbird concept is planned to be a 200 m (660 ft) long roll-on/roll-off ship with a capacity of up to 7,000 cars.
Wind-assisted propulsion is the practice of decreasing the fuel consumption of a merchant vessel through the use of sails or some other wind capture device. Sails used to be the primary means of propelling ships, but with the advent of the steam engine and the diesel engine, sails came to be used for recreational sailing only. In recent years ...