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Heads-Up Display Modes 35 - Metaboli

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Air Combat Basics 127<br />

of time between rolling away from the target until pulling back into the target<br />

determines how “big” the yo-yo is. Generally speaking, executing a series of<br />

small yo-yo’s to slowly nibble away at a large angular problem is better than<br />

executing one large maneuver.<br />

If you have an adversary executing high yo-yo’s behind you in order to gain a firing<br />

position, watch the enemy’s nose closely. Your movement away from him helps<br />

solve his closure rate or aspect angle problem. Whenever his nose comes off (that<br />

is, is pointed behind your flight path), relax your turn and accelerate, thus<br />

increasing your energy status. As his nose pulls back into firing position, increase<br />

the g-load and tighten your turn. Conserve your energy when his nose is off,<br />

spend your energy as he brings his nose toward a firing position.<br />

Aerial Gunnery<br />

Firing a gun from a moving platform, and trying to hit another moving platform<br />

executing evasive maneuvers, is no trivial task. To begin with, the bullets take a<br />

finite amount of time to leave the barrel and travel to the target; the further away<br />

the target is, the longer each projectile takes to cover the distance. During that<br />

time of flight, the target will probably execute some form of evasive maneuver; he<br />

probably won’t be in the projectile’s flight path by the time it gets there. So, the<br />

shooter has to “lead” the target: predict where it will be by the time the bullets<br />

get there and then fire at that point, hoping the target flies into the projectile<br />

stream. Meanwhile, gravity tugs on the projectiles, pulling them toward the<br />

ground. The farther and slower the projectile flies, the more the bullets drop. The<br />

shooter must factor this drop into the lead calculations as well.<br />

Meanwhile, the shooter is moving also. Since he’s chasing the target, he’s<br />

probably flying a curved flight path. Consequently, his tracer stream appears to<br />

“bend” away since the individual rounds continue on a straight flight path. If all<br />

goes according to plan, the shooter aims ahead of the target, fires, and watches<br />

the tracers appear to fly a curved path to intercept the target.<br />

Based on this scenario, we see that the range to the target is arguably the most<br />

important aspect of aerial gunnery. The further away the target is, the longer the<br />

bullets fly. Consequently, the shooter must lead the target more and account for<br />

greater drop due to gravity. As most WWII pilots (who did not have the benefit of<br />

pickling off a guided missile) discovered, don’t shoot until the enemy aircraft fills<br />

the view. The closer you are, the more likely you’ll hit something. Deflection<br />

shooting, or the art of appropriate leading a maneuvering target, increases in<br />

difficulty as range-to-target increases.

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