From: Miami, Florida
This is another presumed calculation error (similar to the ABM Overshoot Issue that I reported earlier today), but this involves the SM-3 IB missile, as opposed to the SM-3 IIA.
The SM-3 IB missile (which only has a range of 200 miles, as opposed to the SM-3 IIA which has a range of 1350), is fired from the TICO when the DF-21s are about 650 miles away. Surprisingly, this missile climbs much faster to meet the target than does the SM-3 IIA in the example, and they actually make it to the proper intercept altitude. Unfortunately, it still isn't able to destroy the incoming DF-21s.
The SM-3 IB missile unfortunately runs out of fuel/energy after traveling about 230 miles from the TICO. So, again, it appears that the intercept logic needs to be tweaked just a little bit. Like the SM-s IIA issue, this happens every time.
Everything else about this encounter is the same as the other scenario.
Note, the two TPY-2 radars, and the LORENZEN are overkill and only here for early identification/interception purposes. This aspect works perfectly. It's the interception calculations that need a little tweaking.
(One other oddity worth noting: In the previous scenario, the TICO turns to a perpendicular (90 degree) heading before launching its SM-3 IIA missiles. That doesn't happen here. With the SM-3 IB the missiles are launched while the TICO is heading on its original course, which is roughly at 45 degrees. I don't know if this is significant at all, but it may be helpful.)
Thanks for looking into this.
< Message edited by Rory Noonan -- 4/12/2021 2:12:15 PM >