vertical lift bridge - определение. Что такое vertical lift bridge
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Что (кто) такое vertical lift bridge - определение

MOVABLE BRIDGE IN WHICH A SPAN RISES VERTICALLY WHILE REMAINING PARALLEL WITH THE DECK
Lift bridges; Liftspan bridge; Lift bridge; Lift Bridge; Vertical lift bridge; Lift-bridge
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Vertical-lift bridge         
A vertical-lift bridge or just lift bridge is a type of movable bridge in which a span rises vertically while remaining parallel with the deck.
Lift (force)         
  • Airflow separating from a wing at a high angle of attack
  • Control volumes of different shapes that have been used in analyzing the momentum balance in the 2D flow around a lifting airfoil. The airfoil is assumed to exert a downward force −L' per unit span on the air, and the proportions in which that force is manifested as momentum fluxes and pressure differences at the outer boundary are indicated for each different shape of control volume.
  • Lift is defined as the component of the [[aerodynamic force]] that is perpendicular to the flow direction, and drag is the component that is parallel to the flow direction.
  • An illustration of the incorrect equal transit-time explanation of airfoil lift.<ref name="nasa_equal_transit"/>
  • streamlines]].
  • Illustration of the distribution of higher-than-ambient pressure on the ground under an airplane in subsonic flight
  • isobars]] of equal pressure along their length. The arrows show the pressure differential from high (red) to low (blue) and hence also the net force which causes the air to accelerate in that direction.
  • Streamlines and streamtubes around an airfoil generating lift. Note the narrower streamtubes above and the wider streamtubes below.
FORCE; AERODYNAMICS TERM
Dynamic lift; Lift force; Lift Force; Useful lift; Lift equation; Aerodynamic lift; Lift (physics); Lift (fluid mechanics); Lift distribution; Equal transit-time fallacy; Equal transit time fallacy; Lifting force; Lift vector; Lift (airplane); Three-dimensional flow; Lift (aerodynamics)
A fluid flowing around an object exerts a force on it. Lift is the component of this force that is perpendicular to the oncoming flow direction.
vertical         
WIKIMEDIA DISAMBIGUATION PAGE
Verticality; ↕; ↨; Verticals; Vertical (disambiguation); ↕ (disambiguation)
1.
Something that is vertical stands or points straight up.
The gadget can be attached to any vertical or near vertical surface.
? horizontal
ADJ
vertically
Cut each bulb in half vertically.
ADV: ADV after v
2.
The vertical is the direction that points straight up, at an angle of 90 degrees to a flat surface.
Pluto seems to have suffered a major collision that tipped it 122 degrees from the vertical.
N-SING: the N
vertical         
WIKIMEDIA DISAMBIGUATION PAGE
Verticality; ↕; ↨; Verticals; Vertical (disambiguation); ↕ (disambiguation)
a.
Perpendicular (to the horizon), upright, plumb.
Vertical         
WIKIMEDIA DISAMBIGUATION PAGE
Verticality; ↕; ↨; Verticals; Vertical (disambiguation); ↕ (disambiguation)
·noun Vertical position; zenith.
II. Vertical ·noun A vertical line, plane, or circle.
III. Vertical ·adj Perpendicular to the plane of the horizon; upright; plumb; as, a vertical line.
IV. Vertical ·adj Of or pertaining to the vertex; situated at the vertex, or highest point; directly overhead, or in the zenith; perpendicularly above one.
vertical         
WIKIMEDIA DISAMBIGUATION PAGE
Verticality; ↕; ↨; Verticals; Vertical (disambiguation); ↕ (disambiguation)
¦ adjective
1. at right angles to a horizontal plane; having the top directly above the bottom.
2. involving or passing through all the different levels of a hierarchy or progression.
3. Anatomy relating to the crown of the head.
4. archaic at the zenith or the highest point.
¦ noun
1. a vertical line or plane.
2. an upright structure.
Derivatives
verticality noun
verticalize or verticalise verb
vertically adverb
Origin
C16 (in the sense 'directly overhead'): from Fr., or from late L. verticalis, from vertex (see vertex).
Patient lift         
ASSISTIVE DEVICE IN HEALTH CARE
Sit-to-stand lift; Patient hoist; Hoyer lift; Sling lift
A patient lift (patient hoist, jack hoist, hydraulic lift) may be either a sling lift or a sit-to-stand lift. This is an assistive device that allows patients in hospitals and nursing homes and people receiving home health care to be transferred between a bed and a chair or other similar resting places, by the use of electrical or hydraulic power.
Verticality         
WIKIMEDIA DISAMBIGUATION PAGE
Verticality; ↕; ↨; Verticals; Vertical (disambiguation); ↕ (disambiguation)
·noun The quality or state of being vertical; verticalness.
Lift table         
  • Unimog 405/UGN]] on a lift table
  • B-17 bomber]]
TYPE OF TABLE
Lift tables
A lift table is a device that employs a scissors mechanism to raise or lower goods and/or persons. Typically lift tables are used to raise large, heavy loads through relatively small distances.
Vertical position         
POSITION ALONG A VERTICAL DIRECTION ABOVE OR BELOW A GIVEN VERTICAL DATUM
Altitude, height, and depth; Höhenmeter; Vertical metre; Vertical coordinate; Height or depth; Vertical distance; Vertical separation; Depth (coordinate); Vertical meter; Standard geopotential metre; Level (coordinate); Vertical level
Vertical position or vertical location, also known as level, is a position along a vertical direction above or below a given vertical datum (reference level).

Википедия

Vertical-lift bridge

A vertical-lift bridge or just lift bridge is a type of movable bridge in which a span rises vertically while remaining parallel with the deck.

The vertical lift offers several benefits over other movable bridges such as the bascule and swing-span bridges. Generally speaking, they cost less to build for longer moveable spans. The counterweights in a vertical lift are only required to be equal to the weight of the deck, whereas bascule bridge counterweights must weigh several times as much as the span being lifted. As a result, heavier materials can be used in the deck, and so this type of bridge is especially suited for heavy railroad use. The biggest disadvantage to the vertical-lift bridge (in comparison with many other designs) is the height restriction for vessels passing under it, due to the deck remaining suspended above the passageway.

Although most vertical-lift bridges use towers, each equipped with counterweights, some use hydraulic jacks located below the deck. An example is the 52-foot (15.85 m) span bridge at St Paul Avenue in Milwaukee (see also table bridges). Another design used balance beams to lift the deck, with pivoting bascules located on the top of the lift towers. An example of this kind was built at La Salle in Illinois, United States.