I was looking through the game code, and some interesting facts about performance… Also interesting enough despite this being inside the Aim-120A file log its a copy paste of the Aim-120B in the code.
R27ER:
Max Speed: Mach 5.75
Max Range: 100,000
Max G: 35
Engine Force Stage 1: 55,275
Stage 1 Burn Time: 3.2 seconds
Engine Force Stage 2: 26630
Stage 2 Burn Time: 4.8 seconds
Guidance work time: 100
Lock Distance: 25,000
After Launch Speedup: 200
Aim-120A:
Max Speed: Mach 4.0
Max Range: 80,000
Max G: 30
Engine Force Stage 1: 22,300
Stage 1 burn time: 1.7 seconds
Engine Force Stage 2: 13485
Stage 2 Burn Time: 5.3 seconds
Guidance work time: 100
Lock Distance: 20,000
After Launch Speedup: 170
The R27ER engine is producing entirely too much force, and this is not a Mach 5.75 missile…
No, its the opposite. The R27ER has more range, has double the acceleration, has way too much speed. Its flight model doesn’t match reality. The R27ER has an internal lock range of 25km while the Aim-120A & B have a lock range of 20km… that isn’t better.
This is because beyond 25km the R-27ER uses DL from the host radar to guide itself. Once its within 25km it uses its own seeker to find the target that is illuminated by the host radar. Its still a Fox 1. (note the enemy will still get an RWR and a launch warning throughout the R-27ER’s lifespan).
The R27ER has a thrust value of 55,000, and the Aim-120A has a thrust value of 22,300. Thats broken OP as hell for the R27ER. This explains why its accelerating at such a ridiculous speed.
It doesn’t matter, because the R-27ER doesn’t have an internal radar.
AIM-120A does, which means you can lose lock and it’ll guide itself in.
Russia doesn’t use R-27ER for a reason, even their R-77s are superior in capabilities; it was only ever developed for legacy aircraft that aren’t R-77 capable.
Yes, because it doesn’t even come close to reality. Its 25% heavier than an Aim-120A, and its 15% fatter. It has way more drag. The engine produces around 5100 - 5900ftlbs of thrust. The ER just means it has a second stage. The Aim-120A & B produce around 7000ftlbs of thrust. Its smaller, lighter, and has a better engine IRL. It shouldn’t be slower.
I also find it interesting that its guidance system is set to 25,000 when the Aim-120 is set to 16,000 and that its max range is set to 100,000 when the Aim-120 is set to 80,000 in game.
It should be limited to Mach 4, not 5.7 and its thrust should reduced to 20,000.
R27ER is an extended range missile meant for BVR, how is it different? Its a two stage missile meant for BVR. The Aim-120 is a two stage missile for BVR. Except in game the R27ER is operating as a one stage missile with massive thrust, instead of two stages with different thrust.
Wrong. The in game R-27ER is a 2 stage with a booster and a sustainer.
1st stage is 55275N of thrust for 3.2 seconds
2nd stage is 26630N of thrust for 4.8 seconds
