Ridge Lift

Ridge lift (or 'slope lift') is created when a wind strikes an obstacle, usually a mountain ridge or cliff, that is large and steep enough to deflect the wind upward.

If the wind is strong enough, the ridge lift provides enough upward force for gliders, hang gliders, paragliders and birds to stay airborne for long periods or travel great distances by 'slope soaring'. Although unpowered aircraft are usually descending through the air, they will climb if the surrounding air is rising faster than their sink rates. Model glider enthusiasts refer to this technique as "slope gliding" or "sloping".

Orville Wright used ridge lift setting a duration record of 11 minutes in 1911. However the sport of soaring started in Germany after the First World War. In 1921 Dr. Wolfgang Klemperer broke the Wright Brothers 1911 soaring duration record with a flight of 13 minutes. In 1922 Arthur Martens became the first glider pilot to use an updraft rising along a mountain slope to stay aloft for a lengthy period with a flight over an hour.

Read more about Ridge LiftBasic Requirements

Other articles related to "ridge lift, ridge, lift":

Gliding - Soaring - Ridge Lift
... A ridge soaring pilot uses upward air movements caused when the wind blows on to the sides of hills ... In places where a steady wind blows, a ridge may allow virtually unlimited time aloft, although records for duration are no longer recognized because of the danger of exhaustion ...
Ridge Lift - Basic Requirements
... Ridge lift is generated when the wind blows against a hill, ridge, escarpment or ocean wave, causing the air to rise ... In meteorology this is known as orographic lift ... by glider pilots to gain height but this should not be confused with slope lift ...
Lift (soaring) - Ridge Lift
... Ridge lift, or Orographic lift, is caused by rising air on the windward side of a slope ... Ridge lift is used extensively by sea birds and by aircraft ... In places where a steady wind blows, a ridge may allow virtually unlimited time aloft ...
Hang Gliding - Soaring Flight and Cross-country Flying
... the following sources Thermals The most commonly used source of lift is created by the sun's energy heating the ground which in turn heats the air above it ... indicator) which shows visually (and often audibly) the presence of lift and sink ... Ridge lift Ridge lift occurs when the wind meets a mountain, cliff or hill ...

Famous quotes containing the words lift and/or ridge:

    And if thou wilt make me an altar of stone, thou shalt not build it of hewn stone: for if thou lift up thy tool upon it, thou hast polluted it.
    Bible: Hebrew Exodus 20:25.

    The light passes
    from ridge to ridge,
    from flower to flower—
    Hilda Doolittle (1886–1961)