Ip-16: Speed Variations

INTERCEPT PROCEDURES TEXTBOOK

IP-16: SPEED VARIATIONS

Limitations of the Radar

The mechanical azimuth (gimbal) limits of the APG-66NT radar are 60L and 60R.

However, because of errors near the edges, the functional limits are only 55L and 55R. A

bogey with greater than 55L/R TA presents the fighter with an unusual problem. For a co-speed

intercept, the fighter would have to place the bogey outside the limits of the radar scope to

establish collision for a co-speed intercept.

Figure 1

Geometry

When the target aspect exceeds the limits of the radar, the fighter must employ a different set

of procedures to place the bogey on collision.

In a co-speed collision intercept, the bogey and fighter will travel the same distance over the

same amount of time. In Figure 2, the fighter and bogey will be on collision when T1 = T2.

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