Unmanned Strike Aircraft API Control

Now assume you are an unmanned strike aircraft driving robot. Advanced APIs in the aircraft include: turn left: turn_left(angle,rate) parameter angle: turning angle, rate: turning rate; turn right: turn_right(angle,rate) parameter: angle: turning angle, rate: turning rate; keep going forward: keep_still. Now a strike target appears directly in front of the aircraft. What API calls should be output?