1, press 4 to take controll of tank first and drive it away from front of aircraft, how to drive it? You can reference my another model "tank"
2, drop throttle to zero to stop tank and press 4 again to leave tank somewhere you like, and then, press 2 and change viewpoint to take controll of the bomber aircraft, take off please.
3, turn back aim at tank, and press 3 to drop bomb! You should take lots of exercises to bomb tank to the sky! You could change viewpoint to the bomb here
4, if it's hard to bomb tank, land your aircraft again, come to stop, then switch back to tank again, move around and aim at the bomb, change viewpoint at the warhead, and press 6 to fire! You Can see bang!
Soon later I will upload video onto youtube and everything showing the POP
Enjoy your self!