The “New” AIM-54 Phoenix I: First Look [2.9.25.21123 11/03/2026]

The keyword for this Phoenix update is “compromise”. It is, in fact, a compromise between the goal of portraying the Phoenix as closely as possible, and the means to achieve this objective. My feeling is that an accurate representation of the AIM-54 Phoenix in DCS is just not possible until more tools are made available, or are improved.
Keeping in mind that I am not a DCS developer and these are my impressions only, seven years after the release of the F-14 Tomcat, this has not yet happened, and I wonder if it will ever happen. The ultimate result is that Phoenix might be slightly too good in certain scenarios and underperforming in others. As I said: compromise.

Despite what I just said, this is the best representation of the AIM-54 Phoenix in DCS …so far.

Changes

The primary aspects that the new iteration modified are thrust, loft trajectory, altitude, and drag.

Rocket Motors & Thrust

Let’s start with the rocket motors. In primis, the Mk60 is now de facto almost equivalent to the Mk47. The former was an alternative motor to differentiate the supply, and having two quite different models is probably an unnecessary burden in terms of research, implementation, and development. There are still some differences, though.
As we can see from these charts, the rocket motor of the new AIM-54 pushes harder. Every parameter, from the peak speed to the acceleration, is now improved.
These tests show the performance against targets at 0TA/ATA and at different altitudes.

Loft Trajectory

The old AIM-54 had a very pronounced avoidance manoeuvre. This has been tuned down, ergo the new Phoenix spends less energy in such a phase and begins the climb sooner.
Moreover, within 21nm, the missile now lofts. The effect is huge on the performance, as the old version did not do so. Therefore, the Phoenix can invest energy into a minor climb, to better train altitude for speed in the terminal phase.

Drag

The drag has been reduced as well. The original value was too high, and this is one of the factors that prompted the team to work on updating the AIM-54. The result is a missile that bleeds less energy in tight turns. Although not sufficient to offset the guidance issues, this is a welcome improvement.

Altitude

As I said in the beginning, the parameters available to the devs do not appear to be up to the task. The Phoenix is the most complex missile in DCS, and the models used for an AIM-120 or R-27 are not sufficient. So, here is the biggest casualty of the new AIM-54 iteration: the altitude. An iconic aspect of the Phoenix is its ability to reach extremely high altitude, cruise there, and then dive onto its target. This is what enables its long-range performance. In fact, since the rocket motor is conventional and not, for example, a ramjet, this is one of the limited ways to reach extreme distances.
Given the boost to the rocket motor, drag, and more, allowing the Phoenix to reach the same altitude would have resulted in a possibly over-performing missile.
The other side of the coin is that, as we move to lower altitudes, especially around 15,000ft, the lack of energy stored in the climb results in on-par or worse performance.

Conclusions

Overall, the new AIM-54 Phoenix is a faster and more aggressive missile that tends to reach its target sooner and at a greater terminal speed. However, the scenarios where reaching high altitude mattered are negatively affected.
If we were to map the areas of improved performance on a Cartesian plane, we would see that the winners fall in the short-range side, especially within 21nm. Similarly, high altitude shots until circa 60nm now are more performing, as the Phoenix generally arrives sooner, faster and with higher terminal speed.
The proboscideo in the room is manual loft. It, in fact, drastically improve the climb, and the top altitude reached. Although I do not want to dive into this topic just yet, as the “baseline” missile behaviour should be considered right now, manual loft has a huge impact on the missile. Definitely much greater than in the past. Again, if you want to see the details of the changes and how they translate into the missile performance, please let me know.

Post Scriptum

Away from the Phoenix, and whilst I show more data, there are three points I want to mention.
In primis, I must be honest: I think that all this is a bit of a waste of time: the Phoenix is, in fact, not where I would like to see it, and fiddling with insufficient parameters means that, at some point, things will change again.
I collected 40,000+ datapoints to assess and help to test the new Phoenix, and I am nowhere near close to finishing. Although I am quite good and fast at it, I am not looking forward to the inevitable tabula rasa and to starting from scratch at some point in the future.

Next, as usual, unless things change in terms of “core DCS”, the Phoenix will always have a problem: the too simplistic level of simulation of certain modules and AI. This is a topic I raised hundreds of times, but as long as a MiG-21 with its basic SPO-10 can systematically notch a missile coming down from the heavens above, I mean, what’s the point?

Lastly, and correlated to the previous points, is how detrimental the understanding of the game is in certain categories of players. Without turning this into an ad hominem, the problem is simple: missiles, and the Phoenix in this case, should not be over-boosted to compensate for the issues of the game. Likewise, I have seen players asking to add this or that missile for “fairness”. I have seen this point raised so many times, but if we moved towards this sort of “balancing”, DCS as a simulation stops making sense. And again, mods are a thing.

I hope ED will work on this point, as a dynamic campaign with the current AI does not sound particularly appealing, to be honest. They have done great stuff with the new MiG-29 and the SPO-15, I can only hope they carry on this route.