Well...it's not like the Super Horror could get any slower and not be an AFV. And when you are at Ps=0 at Mach 1 and 20,000ft, you are not going to beat a threat with a missile which has the exact same motor diameter, length and mass (AIM-260, 12ftX8"X510lbs) as your primary threats: PL-15, R-77-1, Meteor.
OTOH, a genuine 400km ranged weapon, if you can target it from overhead or something like a micro-RCS UCAV with a giant IRST, allows you to do this-
F/A-18E w/ AIM-174 vs. J-15 w/ PL-15
View: https://www.youtube.com/watch?v=O9H3X3bEQRQ&
With missile tipping into A-Pole about the time the threat decides to launch. What this means is that, provided you can maintain steering efficiencies in the ultra high loft mode, there is nothing the fast-jet threat can do in the 90nm->60nm of your weapon midcourse that makes it more survivable than say a bomber. The ERAM kinematic overlaps everything, even a pump.
Which bring us to the bomber threat... JATM is a bay weapon. AIM-174B is not. At least not on a fighter. But the same over-commit on a fighter is twice as bad on a bomber until you acknowledge the much greater munitions lengths which are possible with an MPRL, on a stealth.
You cannot afford the 1,000 knot closure dynamic with a 400 knot B-21. Even if they only have a 90nm PL-15, you cannot get out of your own way in time to shoot and evade.
So you do this-
Skyborg UCAV+IRST Forward, AIM-174 Shooter, Well Back
View: https://www.youtube.com/watch?v=N3VUK7h6x8A
And take your Mach 7 midcourse out into the ~150nm, based on a 40-60nm IRST detection and 60-90nm ELS track. That's your LREW engagement model with a 110nm outer A-pole and a shield wall of sacrificial UCAVs, screening you.
I'm not convinced that CCA is going to go the distance, even as a sacrificial asset, nor carry the shot counts/sensors needed to win as robotic escorts. But if your jet looks like an X-45A with a _stated_ 1,100nm + 2.3hr, unrefueled.
And you blow that up to X-45B/C levels. Maybe you get a 1,500nm radius platform which can launch from a Carrier or Andersen and pick up its escorted B-xx airframe, coming out of JBER or Darwin. As a means to stay completely away from the cans of ASCM/ASBM.
Until your ISR can find the TELs and kill them.
That said, what does 'B' mean? Is it a nomenclature reference to the SM-6 Blk.1B? Because, as stated, that's a Mach 4.5 to Mach 7 kinematic improvement and if you can see through the tip shock at those speeds, that also makes the missile a LOT more high-angle defense penetrative (MAKO equivalent) in this scenario-
AIM-174 As ASBM
View: https://www.youtube.com/watch?v=L8CiCfShm-o
Keeping in mind, the Russians are now shooting down PAC-3 with Buk-M3 to clear the road for UMPK bombers, could we do the same with ASCM and an (AGM-76 equivalent) 'lethal decoy'?
At Mach 5-6 terminals (DCS models air a lot chunkier than reality I'm told) could you at least well and truly stress the HHQ-9/HHQ-16 with a timed TOT as the AGM-158C clear the radar horizon and/or the ALQ-249 S/Nr floor?
What bothers me a bit more is the notion that this thing is the assertioni that this thing is an ABM. In the HLTK advertisements, the F-15s are always shooting at very low level threats moving at likely <Mach 3 'from just offshore'. Which strongly suggests a missiles-in-box merchantmen threat of something roughly the size of SS-26 or MGM-140.
Ignoring the scramble lag problem, that's not going to be very practical for a lot of ships in the inshore AIS/VTS tracking system. WDC (as the only city likely to rate a standing CAP) is...90nm inland from the Atlantic? If you push another 100nm offshore for a gone-dark merchant cruiser in a divert mode, that's a long ways for the likes of a Fateh-110 to make a DT strike.
And if you go high level, then suddenly the combination of target speed and likely offset from the civilian airways around Dulles/Reagan means you have a defended footprint problem which a weapon like PAC-3 (as HLTK) cannot breach the backside of on a falling warhead intercept problem. It just doesn't have the energy.
SM-6 is better than PAC-3, in terms of total impulse in the 1B versus MSE version. But only from altitude and speed which means an 1,800lb, 15ft long, high-fast loft.
There also doesn't appear to be an ACM, which means your high endo option in the 80-90K range is going to be limited. This has always been something which bothered me about SM-6.
And while the exceedingly large black patch which is labeled 'Power And Telemetry' on the existing diagrams (vs. 'Autopilot And IMU' on the SM-2 Blk.III) could be 'something else' than a Proximity Fuse, the reality is that you aren't going to have a large number of FORCAP jets up to aid the existing VLS counts so...BMD is not likely? I say this because, looking at the clearances, it doesn't look like the F/A-18 can double bubble _and_ ERAM up. So you have a persistence problem, even if you prelaunch a bunch to do something like a SUWCAP assist for fleet trains or a landing force.
So...what about BPI/API as a fall back intercept on nukes over Korea or Iran?
When we did Raptor/Talon, back in the 90s, the Peregrine was basically a shrunk Sprint with an ASAS can on the back. Intended to be flung from heated-bay gondolas on the RQ-4, with a stripped out satcomms/sensor package (flown in a standard RQ-4, lower down) to keep weight down.
You get DSP launch alert, the TBM comes up and a secondary radar track is confirmed via AEGIS or a dedicated missile tracker ship, followed by a tertiary optical plume characterization off the GHawk as the missile clears the cloud layer. The Peregrine is fired, any direction, and 'loops up and over' to match bearing and speed. Until the two touch in the low Meso boundary. Prior to staging/fractionation.
Provided the weather isn't too bad, at 60-70K you have a fair amount of time as cross track standoff to make the intercept event happen without actually casting a shadow on the launch pad. But from low level, under the IAMDS horizon, vs. something like an Iskander or perhaps Tsirkon, can the RIM-174 run the threat down, from below? I really kinda doubt that...
Are we going to risk a B-21 as a BMD platform? Since they unscalloped the back end and readjusted CG for lift, the Raider is now a genuine 50-60 block airframe again (as the B-2 was supposed to be before low level capability was KPP'd in). But to me, it looks like you're right on the edge of reactivity without big-bore optics sensorization for autonomy. And using a kill effector which fails to drop tail-wags-dog motor pipe mass and does not have the forward steering needed to ride the tip shock and make the intercept happen under fading aerodynamic control.
The Raider AAM option
View: https://www.youtube.com/watch?v=NwDXgwQ54A4&
The Raider Supplantation Of NGAD In The Deep Air Supremacy Mission
View: https://www.youtube.com/watch?v=BWeUKByjCQw
The B-21 would be an interesting, persistent, BMD solution. But unless you KNOW the threat are using nukes, it would seem to be a really risky gambit for what is likely to be an intermittent availability, HDLD, asset in an LPT environment where a bunch of sounding rockets makes your 7-10 million dollar interceptor a wasted shot throwaway.