Techniques - P-8250150

INTERCEPT PROCEDURES TEXTBOOK

From the foregoing discussion, several conclusions can be drawn:

As a result of a heading jink, TA will be instantaneously changed.

The indications of a jink perceived on the radar scope are the same as those that would

be perceived in the case of an over or underdisplacement.

If the bogey jinks into the fighter, TA is decreased, the bogey will be closer to CB, and

the rate of outward drift will be less than that normally experienced.

If the bogey jinks away from the fighter, TA is increased, the bogey will be further

from CB, and the rate of outward drift will be greater that normally experienced.

The required reactions to counter jinks into the fighter are similar, in principle, as those

used to correct for an underdisplacement.

The handling of a jink away is similar, in principle, to handling an overdisplacement.

Techniques

Briefly summarized, the jinking bogey produces one of two situations and requires the

following reactions:

Indication

Fighter's Reaction

Bogey's Action

Jink into fighter

Less rapid outward

Redisplace further

drift (hot)

out to cool off CT

Jink away from

More rapid outward

Harden turn to

Fighter

drift (cold)

heat up the CT

ROC and Range Rate of Closure

The ROC is the most valuable aid in determining the direction of the bogey's jink. If the

bogey jinks toward the fighter, TA is instantaneously decreased. Therefore, since the bogey has

effectively placed the fighter closer to the forward quarter or head-on aspect than it was prior to

the jink, the ROC will immediately read higher than the expected norm for that TA.

Should the bogey jink away from the fighter, TA will be immediately increased and ROC

will decrease more rapidly than expected for the displaced TA. This is because a jink away puts

the fighter closer to the bogey's beam where the ROC approaches the value of the fighter's own

TAS.

Range rate of closure is another valuable aid in determining the direction of the bogey's jink.

If the bogey's progression down the scope slows down a noticeable amount, then assume a jink

away. If it starts to move quickly down the scope during the CT, assume a jink into.

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