The aerodynamic moment
comparison shows that the pitch moment, [M.
y] is the pitch moment of inertia; T, D, L, and My are the engine thrust, drag, lift, and pitch aerodynamic moment
, respectively; and [F.
Since the velocities are not explicit in the dynamic and kinematic equations of rotation, the effect of the wind field on these equations is transitive through the aerodynamic moment coefficients.
The changes in the aerodynamic forces are equal to the forces generated by the wind velocity, and the changes in the aerodynamic moments are equivalent to the rotational motion induced by wind gradients.
The bending moments are directly proportional to the height of the turbine nacelle above the sea bed and therefore there is an incentive to investigate smaller-diameter turbines with larger numbers of blades, which may be slightly less efficient but which having a lower aerodynamic moment
could reduce the support structure cost.
Consequently, a symmetrical profile gives no aerodynamic torque and in this case, at supersonic speed and on zero angle of attack, the coefficient of the aerodynamic moment [C.
In fact, with drag by viscous effects and due to the sweptback geometry for the aileron, a small, positive aerodynamic moment appears.
n] are opposite in direction and equal in magnitude, and the aerodynamic moments
of the UAV remain constant (Nikolayev 1990).