1) Conciliate 2) Gain the support of 3) Gain the support or favour of 4) Persuade 1) Gains the support of 
A wingover (also called a wing-over-wing, crop-duster turn or box-canyon turn) is an aerobatic maneuver in which an airplane makes a steep climb, followed by a vertical flat-turn (the plane turns to its side, without rolling, similar to the way a car turns). The maneuver ends with a short dive as the plane gently levels out, flying in the opposite...
A sharp 180 degree turn and dive on the wing