Anon

Ramjets too.

The MAXIMUM RANGE listed is normally the maximum ballistic trajectory of the AAM(or AGM) in question in an arbitrary manufacturer or customer selected criteria based wholly on a 'optimal'(another word for impossible) engagement scenario.

For instance, the typical range quoted for the AIM-54C is 100+ nautical miles(claimed to be between 110 and 140nm in reality by various gossips).

That would most likely entail a F-14D flying at it's maximum operational altitude, firing it's Phoenix at maximum separation speed, at a non-manuevering high-supersonic bandit flying a reciprocal intercept course at a much lower altitude, say around 3000 feet or so.

In such an 'engagement' it's no stretch to visualize an AIM-120D fired from a Mach 1.8 Supercrusing raptor at 65k feet having a theoretical maximum ballistic range of 100 miles.

For a typical engagement the practical engagement range of most missiles is usually not much more than 60% of what's listed, and perhaps as low as 30% in a tail chase.

The 'range' of a SAM or AAM is one of the single most misleading statistics around, and in most cases is almost meaningless.

It looks like what they did with the "Slammer D" was to basically add about 25-30% more fuel section, and they probably have a hotter rocket in it too(which may actually hurt economy- ie, burn time though increasing net thrust). That should equate to about 25% more range, give or take. I would venture to guess that the AIM-120D is probably also a good bit faster than a typical AMRAAM.

In the real world, with a mach .9 release, the AIM-120D should be quite dangerous at 50+ nautical miles(basically double the typical max range of the AIM-120A), give or take.
At a mach 1.8 supercruise release from the altitudes an F-22 is going to routinely operate at, you can probably add about another 20-25% to that figure, so probably about 60-65 or so nautical miles.

NOTHING AROUND can see a F-22 from 60-65 nautical miles away, so in reality, the AIM-120D might as well be a death ray.