symmetrically deflected elevon effectiveness derivative

differentially-deflected elevons

derivative

substantial derivative of a hydrodynamic quantity

effective dihedral derivative

material derivative of a hydrodynamic quantity

proportional-integral-derivative (PID)

proportional–integral–derivative controller (PID controller / three-term controller)

elevon

drooping elevon

elevon actuator

elevon compensator

elevon cove

elevon deflection

elevon download

elevon fin

elevon lift

extended-chord elevon

full-down elevon

split elevon

wing/elevon seal

yaw rate to elevon gain

combat effectiveness

measures of effectiveness (MOE)

measures of operational effectiveness (MoOEs)

measures of system effectiveness (MoSEs)

operational effectiveness

total mission effectiveness (TME)

without degrading effectiveness

fire effectiveness (efficiency)

effectiveness of antitank fire

Air Force weapons effectiveness instrumentations system

loss of tail rotor effectiveness