Ip-16: Speed Variations

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INTERCEPT PROCEDURES TEXTBOOK
IP-16: SPEED VARIATIONS
The mechanical azimuth (gimbal) limits of the APG-66NT radar are 60ēL and 60ēR.
However, because of errors near the edges, the functional limits are only 55ēL and 55ēR. A
bogey with greater than 55ēL/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
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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