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 aeroplan...
   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
   The difference in angular settings [Angles of Attack] of the wings of a biplane or multiplane.
   Found on http://www.aerofiles.com/glossary.html
   
   
4. Decalage
   `Decalage` on a fixed-wing aircraft is the angle difference between the upper and lower wings of a biplane, i.e. the acute angle contained between the chords of the wings in question. The decalage is said to be positive when the upper wing has a higher angle of incidence than the lower wing, and neg...
   Found on http://en.wikipedia.org/wiki/Decalage