- ballast lift
- подъёмка (железнодорожного) пути
Англо-русский строительный словарь. 2013.
ballast lift
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Lift-to-drag ratio — In aerodynamics, the lift to drag ratio, or L/D ratio ( ell over dee in the US, ell dee in the UK), is the amount of lift generated by a wing or vehicle, divided by the drag it creates by moving through the air. A higher or more favorable L/D… … Wikipedia
Sailing ballast — Ballast is used in sailboats to provide moment to resist the lateral forces on the sail. Insufficiently ballasted boats will tend to tip, or heel, excessively in high winds. Too much heel may result in the boat capsizing. When sailing vessels… … Wikipedia
Track ballast — forms the trackbed upon which railroad ties (US) or railway sleepers (UK) are laid. It is packed between, below, and around the ties. It is used to facilitate drainage of water, to distribute the load from the railroad ties, and also to keep down … Wikipedia
Glider — Gliders or Sailplanes are heavier than air aircraft primarily intended for unpowered flight. See also gliding and motor gliders for more details. [cite web url = http://www.ssa.org/UsTeam/adobe%20pdf/pr%20pdf/BR%20Sailplanes%20V3%2004.pdf title … Wikipedia
Gliding competition — Competition grid at 2004 UK Standard Class Nationals, Aston Down Some of the pilots in the sport of gliding take part in gliding competitions. These are usually racing competitions, but there are also aerobatic contests and on line league tables … Wikipedia
Gliding competitions — Some of the pilots in the sport of gliding take part in gliding competitions. These are usually racing competitions, but there are also aerobatic contests and cross country distance competitions. Many other pilots enjoy flying cross country just… … Wikipedia
R101 — infobox Aircraft name = R101 type = Airship manufacturer = Royal Airship Works caption = designer = V.C. Richmond first flight = 4 October 1930Clarifyme|date=June 2008 introduction = retired = status = primary user = more users = produced =… … Wikipedia
Gliding — is a recreational activity and competitive sport in which pilots fly un powered aircraft known as gliders or sailplanes. Properly, the term gliding refers to descending flight of a heavier than air craft, whereas soaring is the correct term to… … Wikipedia
Airship — For other uses, see Airship (disambiguation). Dirigible redirects here. For the 1931 film, see Dirigible (film). Not to be confused with Balloon (aircraft) or Blimp. Airship … Wikipedia
railroad — /rayl rohd /, n. 1. a permanent road laid with rails, commonly in one or more pairs of continuous lines forming a track or tracks, on which locomotives and cars are run for the transportation of passengers, freight, and mail. 2. an entire system… … Universalium
Glider Competition Classes — Competition classes in gliding, as in other sports, mainly exist to ensure fairness in competition. However the classes have not been targeted at fostering technological development as in other sports. Instead classes have arisen because of: *… … Wikipedia
