Look up: decalage

1. 
   Decalage
   Decalage is the angle between the chord line of the upper plane and that of the lower plane and is positive when the top plane is at a greater angle of incidence than the bottom. The reason for giving a different angle of incidence to the upper and lower wings of a biplane is to shorten the aeroplane's take-off run and adjust its landing characteri...
   Found on http://www.aeroplanemonthly.com/glossary
   
   
2. 
   decalage
   the angle between the chord of the upper plane of a biplane and that of the lower plane in a section parallel to the plane of symmetry Category: Physics • the angle between the chord of the upper plane of a biplane and that of the lower plane in a section parallel to the plane of symmetry Category: Transport
   Found on http://www.mijnwoordenboek.nl/definition
   
   
3. 
   Decalage
   `Decalage` on a fixed-wing aircraft is the angle difference between the wing and the horizontal stabilizer. Two different decalage definitions are commonly used: `Aerodynamic decalage` is the angle difference between the zero lift lines of the wing's and stab's airfoils. `Geometric decalage` is the angle difference between the chord lines of the wing and horizontal stab. Image:Decalage.jpg Decalage is often confused with incidence which is the ...
   Found on http://en.wikipedia.org/wiki/Decalage