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

I have updated the original post now that I’m able to edit it again.

Also it seems I was right and they capitalized on the AIM-120C-5’s increased motor length to reduce missile stability and allow “over-the-shoulder” launch capability of the AIM-120 in 2002. They did this through a simple software update. @Fireball_2020 @tripod2008

Some interesting photos from the Smithsonian

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Is that a s225x?

Spoiler

images-40

No, it’s the Raytheon AMRAAM which competed against the Hughes model. Later Raytheon bought Hughes in the mid to late 90s and continued the legacy of the AMRAAM.

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To be fair, 28G is just the floor it seems. In the source, it states that it pulled 28G in order to hit a target. The situation might not have required more than 28G, so the missile did just enough G’s to hit the target.

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https://media.discordapp.net/attachments/1078877088087552102/1128760347193528421/Hughes_1.png?width=1366&height=889
https://media.discordapp.net/attachments/1078877088087552102/1128760347680063709/Hughes_2.png?width=1267&height=889

All early Hughes documentation labels the missile as 326 lb “tactical weight”. Other sources also quote this and later models such as AIM-120C as 335 pounds, or even more in the case of much newer versions.

The maximum overload of AIM-120B is confirmed around 35G due to the Korean Study referencing TO-34-16C (with permissions).

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Northrop and Motorola also teamed up and came out with advertisements of a similar design to Raytheons.
https://cdn.discordapp.com/attachments/955829235493273680/1136495240140820540/HRy17v9.png
https://cdn.discordapp.com/attachments/955829235493273680/1136495481393008811/QQaUuEz.png

You’ll hear it here first, but the AIM-260 takes more after these “body-lift, tail-control” designs than it does the AMRAAM we all know and love today. A “high performance wingless missile” of sorts.

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Speaking of motorola and AMRAAM, they are a subcontractor making a number of parts for the AMRAAM to this day as far as I am aware.
http://blog.planet4589.org/space/archive/MartinPfeiffer/SandiaNews84-97/C1055_Lab_News_10-04-91.pdf

https://cdn.discordapp.com/attachments/955829235493273680/1136499170878955541/image.png

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What are the 2 distances representing in-game?
Is the launch distance the distance you can fire with a radar lock and the lock distance the pitbull distance?

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Lock distance is for the active seeker, launch distance is the maximum theoretical kinematic range in a high altitude type scenario.

General comparsion of 120C and ER-27 in 2 sims - Page 3 - Lock On: Flaming Cliffs 1 & 2 - ED Forums

I guess I still don’t understand the 2 values.

For a SARH such as the 530D the stat card gives a 30 km lock range and a 40 km launch range.

How can you fire the missile at 40 km if you can’t even lock the target at that range?

Imagine two targets are traveling the same direction, you fire a missile from rear aspect and they are 18km apart from each other.
The missile likely will travel >30km overall despite being launched from target at just 18km rear aspect.

Likewise, of you fire at 30km but target turns to the side to “crank” the missile may have to travel further distance to hit target.

Though we must also consider… Missiles with inertial guidance and datalink do not need the target to be within lock range for a launch.

No counters? I doubt Gaijin would give the americans the AIM120 without also giving the russians R77

R-77 outperforms AMRAAM up to AIM-120C-5
The AMRAAM currently doesn’t perform on par with the R-27ER with the exception that it can be fire and forget after missile is a certain range to target. I think nullifies the disadvantages of the AIM-120 being only similar to the AIM-7F in performance (albeit a little faster time to target with similar range).

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bring it on

Yes you are right, my mistake

i 100% agree with this.
R-27ER has better kinematics but aim-120 doesnt need you to be nose hot the entire time.
Seems pretty fair to me

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Going further that advantage can only be leveraged if you have the time to maneuver and make proper use of said capability, so has further constraints the it would if they had similar kinetic performance so will be of questionable usefulness at shorter ranges. It may also help restore the longer range edge that western fighters are designed around maintaining.

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yeah and afaik you also have to guide it for some while before being able to turn around so you can’t really launch it at max range and piss off while expecting the missile to achieve anything. unless its a bot, then maybe

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