Increment in Aircraft Zero-lift Drag Coefficient for the Current Flight Condition

The drag increment can be due to but not limited by:

Flaps and Landing Gear:

..\Images\IMG00038_shg.gif

Take-off Flaps

0.010 - 0.020

Landing Flaps

0.055 - 0.075

Landing Gear

0.015 - 0.025

Compressibility :

See: Graphic

One Engine Inoperative:

..\Images\IMG00039_shg.gif

..\Images\IMG00040_shg.gif

All-Engines-Operating

0.00

Fixed Pitch Propeller

0.25

Variable Pitch Propeller

0.10

Low Bypass Ratio Turbofan

0.15

High Bypass Ratio Turbofan

0.25

Note : Effects are additive.