Originally Posted By: Vadifon

Of course reading and many more in Russian
1) Why only 4 degree? 6 or 7 degrees would be more correct. [see attach]

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Since now I don't find an exact explanation about that, just some thoughts about it:

1. The UPR method is a half-lead method, so no big lead is needed (compare with SA-5).
2. The missile is unguided right after launch, it must "hit" strobes, thus some oscilations during this initiation stage are in place (as it is relatively close), also launchers are "leading" too, depending of antena rotation speed, so this could be also a reason for such difference between lead angle and RPK diagram size....
3. Missiles aerodinamic matters too...

Anyway, lead angle is more than a half of RPK diagram (5-7.5 degrees), so no big difference IMHO...

Last edited by piston79; 09/05/13 01:24 PM.