FACTOID # 135: The Pitcairn Islands have the world’s shortest highway system, with only 6.4 kilometers of road. They also have the fourth-fewest main phone lines.
 
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Encyclopedia > Windage

Windage is a force created on an object by friction when there is relative movement between air and the object.


There are two possible causes of windage:

  1. the object is moving and being slowed by resistance from the air
  2. a wind is blowing producing a force on the object

The term can refer to :

  • either, the effect of the force, for example the deflection of a missile or an aircraft by a cross wind
  • or, the area and shape of the object that make it susceptible to friction, for example those parts of a boat that are exposed to the wind.

Aerodynamic streamlining can be used to reduce windage.


There is a similar hydrodynamic effect to windage.


  Results from FactBites:
 
Windage and elevation mechanism for laser aimed weapons - Patent 4212109 (2661 words)
A windage and elevation mechanism as set forth in claim 5, further including a spring cam and coil return spring disposed within said support member in opposed relationship to said angle bracket for moving said bearing in a direction toward said angle bracket upon readjustment of said adjusting means.
The windage and elevation provisions therein described adjust the vertical and horizontal movement of the laser by pivoting a flat piece of steel having a lower base portion which is bent back upon itself and twisted approximately 90.degree.
When windage or horizontal movement of the laser carrying member 32 is desired, clockwise movement of the windage set screw 26 against the angle bracket 16 will operate upon bearing 14 so as to shift the axial shaft 12 in a horizontal direction thus horizontally moving the carrying member 32.
Windage shield - Patent 5090865 (3008 words)
A windage shield for use with a pair of annular members oriented in an abutting end-to-end arrangement to define one boundary of a fluid flow path, each of the members having a radially extending flange at their respecting abutting ends for coupling the members to each other.
5 is a cross-section of the windage shield of FIG.
Windage shields that have developed from these protective shields have not uniformly eliminated leakage paths which might exist within the shields that permit the cooling air to recirculate within the shield and over the bolt heads thereby dragging down the tangential velocity component of the cooling fluid.
  More results at FactBites »


 

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