// Airfoil lift (pre-stall and zero-alpha) torques "up" (negative
// torque) around the Y axis, while flap lift pushes down. Both
// forces are considered to act at one third chord from the
// Airfoil lift (pre-stall and zero-alpha) torques "up" (negative
// torque) around the Y axis, while flap lift pushes down. Both
// forces are considered to act at one third chord from the