Search results
Results From The WOW.Com Content Network
Downwind, when the vehicle is traveling faster than the windspeed, the ground is the fastest-moving medium relative to the vehicle, so the wheels harvest the power and impart it to the rotor, which propels the vehicle. [18] How fast a given wind speed can propel a vehicle in either direction is limited only by the efficiency of the turbine ...
Downwind: when the vehicle is traveling faster than the windspeed, the ground is the fastest-moving medium relative to the vehicle, so the wheels harvest the power and impart it to the rotor, which propels the vehicle. [8] How fast a given wind speed can propel a vehicle in either direction is limited only by the efficiency of the turbine ...
Here are additional clues for each of the words in today's Mini Crossword. NYT Mini Across Hints 1 Across: "Vertically challenged" — HINT: It starts with the letter "S"
A wind-driven whirligig transfers the energy of the wind into either a simple release of kinetic energy through rotation or a more complicated transfer of rotational energy to power a simple or complicated mechanism that produces repetitive motions or creates sounds. The wind simply pushes on the whirligig turning one part of it and it then ...
The propeller is driven by the wheels, and the wheels are driven by the force of wind on the entire vehicle as well as the propeller. At some threshold speed, the force of backward-driven air is sufficient to propel the vehicle faster than the wind speed, but the whole mechanism requires wind; it dies if the wind dies.
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.
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 ...
Apparent wind (V A) is the air velocity acting upon the leading edge of the most forward sail or as experienced by instrumentation or crew on a moving sailing craft. It is the vector sum of true wind velocity and the apparent wind component resulting from boat velocity (V A = −V B + V T).