Vane (redirected from harry)

vane

1. a flat plate or blade of metal mounted on a vertical axis in an exposed position to indicate wind direction

2. any one of the flat blades or sails forming part of the wheel of a windmill

3. any flat or shaped plate used to direct fluid flow, esp a stator blade in a turbine, etc.

4. a fin or plate fitted to a projectile or missile to provide stabilization or guidance

5. Ornithol the flat part of a feather, consisting of two rows of barbs on either side of the shaft

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vane [vān]

(aerospace engineering)

A device that projects ahead of an aircraft to sense gusts or other actions of the air so as to create impulses or signals that are transmitted to the control system to stabilize the aircraft.

(mechanical engineering)

A flat or curved surface exposed to a flow of fluid so as to be forced to move or to rotate about an axis, to rechannel the flow, or to act as the impeller; for example, in a steam turbine, propeller fan, or hydraulic turbine.

(navigation)

A sight on an instrument used for observing bearings, such as on a pelorus or azimuth circle.

(vertebrate zoology)

The expanded web part of a feather.

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weather vane

A metal plate, often decorated, or in the shape of a figure or object, which rotates freely on a vertical spindle to indicate wind direction; usually located atop a spire or other elevated position on a building.

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Vane 

the lamellar part of a bird’s feather that lies on both sides of the shaft. It consists of numerous flattened formations, or barbs, that project from the shaft. Each barb has two rows of small lamellae, or barbules, equipped with hooked projections, or barbicels. The barbicels hook adjacent barbs tightly together, forming an elastic, air-resistant surface.