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Retiring Trident

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<strong>Retiring</strong> <strong>Trident</strong><br />

Assessment:<br />

::<br />

B61-12 launched at 45kft, egress height of 100ft, initial<br />

nose down angle of 55 – 75 degrees, egress speed 700<br />

knots;<br />

::<br />

B61-12 launched at 45kft, level turn, egress height of 45kft,<br />

egress speed 1026 knots.<br />

::<br />

There are a range of credible attack profiles that utilise the F-35C’s<br />

stealth characteristics to delay detection until shortly before weapon<br />

release, allowing egress at medium or low level.<br />

::<br />

The B61-12 RCS is unknown, and thus it is unknown how easy it<br />

would be to intercept by the defences. For heavily defended targets,<br />

the obvious riposte is to significantly increase the number of B61-12s<br />

simultaneously in flight – 80 bombs plus 40 receding aircraft targets<br />

on a range of attack profiles and egress headings would make the<br />

defenders’ task considerably more complicated.<br />

::<br />

If priority were (correctly) given to the incoming bombs over shooting<br />

down the departing aircraft, then two 48N6E or 9M96E2 missiles<br />

should be fired against each incoming bomb. Assuming an 85% probability<br />

of kill (Pk) per missile, each double targeted bomb has a 2.25%<br />

chance of survival. If 160 SAMs are launched, this implies a near-certainty<br />

than one and high probably that two B61-12s would reach the<br />

target.<br />

::<br />

85% Pk is a reasonable worst-case scenario for the attackers, and it<br />

assumes that the system is working optimally, and that there are in<br />

fact sufficient missiles available to double-target each bomb. If this is<br />

not the case, or if the Pk falls because of, e.g., difficulties in tracking<br />

the low RCS, then the number of weapons reaching the target rises<br />

rapidly. For instance, if all 80 were targeted by a single missile with an<br />

85% Pk, then 12 of the 80 B61-12s would make it to the target.<br />

: : Very low-level approach (

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