The AIM-120 'AMRAAM' - History, Design, Performance & Discussion

Why? Its a much draggier missile than the rest and it doesnt loft. Its pretty obvious its speed should fall off much quicker than the rest. Even then, the impact speed crossover point is only at 49km with the AMRAAM and even further for the rest. If anything it might be overperforming in speed retention.

I don’t think he said anything about the placement, just the curve.

Several things can be inferred from this interestingly enough.

R-77 is better than R-27ER in terms of hitting US bombers/AWACs/tankers that are protected by fighters because of its better absolute max range where the R-27ER was battery limited.

Interestingly, even if the R-27EA was to be made into production, who knows what it would have looked like with an active radar + increased battery time. I’d take a guess that it would have weighed more with a bigger battery and an ARH seeker, and thus a bit less range/acceleration? Although a loft for R-27EA would have negated those things.

The curve for R-27ER in speed drop off seems accurate due to only lack of loft, whereas lofts are supposed to increase the average velocity of speed over flight time. Give the R-27ER missile file a loft code, and the speed drop-off curve will look similar to the MRAAMs.

MICA has a lower battery time and thus lower maximum range than the rest of the MRAAMs, but it doesn’t need to as anything beyond 50km wouldn’t hit even a slightly evading fighter for any of the MRAAMs. France is located on the western coast of Europe, so there’s no threat of Russian or Chinese bombers/awacs like there is for UK/US/Germany/Sweden. It is optimized to be used against fighters, hence the high acceleration and TVC.

AIM-120 does the best so far in terms of having absolute max range for bombers/awacs while also being good for fighters. But it’s also the least effected by bugs out of all the missiles here, except for maybe R-27ER.

The curve should look like the others, not like the graph

The speed drop curve shouldn’t look like the others. One doesn’t loft and the others do. MRAAMs that loft would have a slower acceleration but also slower speed-drop off.

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This graph indicates a launch speed of Mach 2 with the closest analogous altitude being 10km instead of a launch speed of M1.0. Its also a velocity over time graph instead of a velocity over distance graph. They are not comparable, though you could use a known velocity at a know time to determine how close they are had your graph not been a M2.0 launch, which is vastly higher than the launch speed used in-game. Maybe stop insulting people when you don’t know what you’re talking about

I can’t see what you wrote and I can’t open it either

https://cdn.discordapp.com/attachments/955829235493273680/1214613595938361364/temporarily.png?ex=65f9c00f&is=65e74b0f&hm=313db257e2bf9e8abac55efa314d5d0073850d1a0865fd6405316dbc4bcd6bb4&

The speed graph from the R-27ER depends on time and different heights

Do you still not understand why this graph is irrelevant for comparison with the one from in-game posted above? xD

It’s more relevant, it avoids potential improper launch and test conditions. 1° below horizontal can have 10% + difference in impact on time to target and performance for the non-lofting missiles.

That is, in your opinion, the Game rocket should not match the real one?


Here is a graph of the speed m/s from a distance. Few points are taken. If you take more points, the graph will be more flat
The game schedule is not correct. Since the ER has a lower speed over 60s. Than AiM-120 and R-77

During the test, the aircraft was not manually pulled up to loft the 27er. Other arh missiles will automatically loft. The farther the launch distance, the higher the missile maximum flight altitude, which greatly slows down the decline of the terminal speed.

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That’s fine. Let’s move the R-27 discussion to the correct thread it is getting a bit long in the tooth here.

I gave up trying to explain things to him at this point. Speaking to pro-russian players is like talking to flat earthers.

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I’m an American main & patriot…?


In the actual game, the R-27ER can greatly improve the performance of long-distance shooting through manual LOFT.
60km 9600m m1.14 (1340kph) launch, 30° manual LOFT
46.3s, 2.5M, very powerful

image

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Would be interesting to know if devs actually modeled the seeker aquisition phase of the R/ER correctly? The strongest target within ±150m/s from the last known Vc within a 12° cone will be locked when it transitions to SAHR from radio commanda guidance. If you go under Mach 1 and put the R/ER shooter at 60° gimbal limit, the R/ER could lock Chaff or ground clutter. Basically notching it. And if the ER/R leads, depending on how much its leading you, possible you could stay slightly above Mach 1 and still notch it during this phase.

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low attitude test
1000m m0.9 vs 1000m m0.9
tested15\20\25\30\35\40km

mica and r77 cannot hit the 40km target (because of flight control problems)
pl12 cannot hit the 35km target (same reason)

Some interesting things can be seen. For example, due to changes in ballistic height, some missiles are launched at longer distances, but their terminal speeds are higher.

It’s hard to imagine that the PL12 has the shortest range among these missile.

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