Figure 7: Influence of the main wing angle on glide performance of Microraptor.
From: Aerodynamic performance of the feathered dinosaur Microraptor and the evolution of feathered flight
The angle of main wing relative to the body (and tail) was varied by ~10 degrees. Dark lines: original wing position, blue sprawled, red legs down. Pale lines: wing at higher angle relative to body. (a) Speed-specific Lift-Drag polar. (b) Glide ratio against speed-specific aerodynamic force coefficient. The angled wings increase the best highest glide ratio but exhibit reduced values at higher aerodynamic forces. (c) Speed-specific moment coefficient against speed-specific aerodynamic force coefficient.
