thermal updraft

thermal updraft

thermal updraftclick for a larger image
A rising air current in a large thunderstorm that is buoyant because its temperature is warm compared with the surrounding air. “Thermals” are not always associated with thunderstorms; they are useful to soaring pilots and hang gliders, as the rising air currents are responsible for keeping the planes and gliders aloft.
Mentioned in ?
References in periodicals archive ?
--,--,--,--, and--, 2002b: Measurements of thermal updraft intensity over complex terrain using American white pelicans and a simple boundarylayer forecast model.
Thermal updraft velocity and boundary layer top will show pilots how severe and how deep thermal turbulence is expected to be, and BL (boundary layer) wind speed and direction are always interesting to us.
I was really looking forward to stepping off the ground catching a thermal updraft like a hawk, and heading for the clouds.
I preferred to sit on the patio and admire the vines from a distance, considering the temperature, although there was a cooling thermal updraft from the Valley floor.
A kite caught in a thermal updraft can move forward until it sits overhead with its line perpendicular to the ground -- an extremely unstable position.
Like other eagles (there are 59 species of eagles found on every continent except Antarctica), the American Eagle can gracefully soar in the air for hours using natural wind currents and thermal updrafts as earlier mentioned.
Those bullets get moved around with thermal updrafts and downdrafts and everything else out there.
The system will use thermal updrafts to remain in the air all day, collaborating with other drones to pinpoint current and potential thermals, he said.
Main aim of the systems is to support safe aircraft navigation around the thermal updrafts which would take place above the Curtis Island plants.
The edition also covers humming birds' perfect hover; birds' intuitive exploitation of thermal updrafts; the mechanical motion of insects' wings, and seagulls' magnificent sense of flight environment, which allows them incredible angles of attack and increased control in crosswinds.
The building's most visible educational component is a renewable-energy source: six wind turbines mounted on the roof's eastern edge and powered by thermal updrafts.
Eagles soar to 10,000 feet and can stay aloft for hours on the winds and thermal updrafts. With skeletal structures weighing less than half a pound and their more than 7,000 feathers weighing fewer than 21 ounces, these birds travel light.