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

Not really
The 1992 UK document is before the UK started using AMRAAMs (1995) and even before the missile (AIM-120B) had even existed in its finalized form and went into production (1994).

It very clearly is not a primary source.

@Gunjob @MiG_23M

None of them are primary sources except for Hughes.

Hughes information about AIM-120 states 326 pounds. The design goal for the AIM-120B was no more than 327 pounds, I suppose they probably achieved this. The AIM-120C-5 has a larger motor, redesigned rear control section. The weight & center of gravity likely shifted and it is then that the weight increased to 341+ pounds.

Any manuals citing the weight of AMRAAM got it from another source. If they were declassified and state 327 pounds as the British one does - then we know it is 327 pounds. If you are discussing public data like in the case of “US Defense Logistics Agency Public Logistics Data”, you are going to get the generic unclassified publicity numbers.

ADA357045 states a generic 345 pounds. At this time the generic “range” given for the missile was also “More than 20 nm” or sometimes “More than 30 nm”. It wasn’t until recently that they admitted the range was “more than 40 nm”… and as we know thanks to the sources provided by @Flame2512 and @Gunjob the true maximum range is beyond 60 nm. I had already theorized this based on the thrust and performance data available prior to their sources - but I needed proof. Mostly hinged on finding a source for battery life which I think we still haven’t found? I think Gaijin has just used what they thought was reasonable.

Regarding the encyclopedia;
image

Again, not a single one of those was a primary source. I don’t see any of the people who made the AMRAAM listed as authors either, so the encyclopedia is a tertiary source that itself doesn’t list its’ references. It’s worthless.

Hughes directly - and all subsequently declassified manuals state that the AIM-120A/B are around 326-327 pounds.

@Gunjob @MiG_23M

Selected Acquisition Report (SAR) FY 1991 pages 135, 137 & 807 :
https://www.esd.whs.mil/Portals/54/Documents/FOID/Reading%20Room/Selected_Acquisition_Reports/15-F-1687_FY1991_SARS.pdf
AMRAAM: Development Estimate: 328 lb, Demonstrated Performance: 344 lb, Current Estimate (I.e. for finalized production missile): 345 lb

Spoiler

Selected Acquisition Report (SAR) FY 1993 pages 92 & 95:
https://www.esd.whs.mil/Portals/54/Documents/FOID/Reading%20Room/Selected_Acquisition_Reports/15-F-1687_FY1993_SARS.pdf
AMRAAM: Development Estimate: 328 lb, Demonstrated Performance: 345 lb, Current Estimate (I.e. for finalized production missile): 345 lb

Spoiler

Also AIM-9L/M incorrect weight bug report soon ™ :)

You’re looking at threshold values not tactical weight. The 345 number is the maximum weight given for the upgrade program, 327 lbs is the expected weight. There was a pre-planned product improvement program that led them to label the weight as “345 pounds” for all intents and purposes. This matters for load stores, weight, etc.

Another thing to note is the numbers for weight were still classified according to FOIA. The actual mass of the AMRAAM is not to be disclosed in any documentation unless they are using the public “345 lbs” range. You can’t FOIA the weight of any variant of the missile currently for these reasons.

Aside this - the test missiles that were produced prior to this document were already confirmed in documentation at 327 pounds. Where does the additional 18 pounds come from?

Another example is the Abrams; the maximum threshold weight is for potential upgrades and add-ons. The actual tactical weight is generally less. The threshold being reached is also the reason weight reduction programs are underway to find a way to meet the other criteria without exceeding the weight and providing more room for future improvements. AIM-120D exceeds the threshold weight - a total redesign was underwent and now we will receive the AIM-260 which is the “future proof” replacement.

You really want to die on that hill don’t you?

F-18C and F-18E’s manuals specify 348 lb for the “tactical weight” of the AIM-120A.

I’m sure they are lying to their pilots as well.
Only you know the correct number :)

1 Like

These are intentionally wrong. It’s psyops. This is confirmed by other manuals and sources already.

This isn’t the first time either, misinformation about the AMRAAM being no more than 300 pounds was once pushed out; https://apps.dtic.mil/sti/tr/pdf/ADP010957.pdf

I could always reference TO-34-16C (with permissions) from this Korean Study.

Of course not, that is why the legitimate manual is not publicly available on the internet.

Believe me when the tech mods have already very thoroughly investigated all of these sources you’ve posted thus far.

New separate bug reports with new evidence (SAR FY 1991 and SAR FY 1993) and a dissection of the 1992 UK document that Gunjob had posted in the previous report:

AIM-120A/B incorrect warhead filler type:

https://community.gaijin.net/issues/p/warthunder/i/aAb8FexifAu7

AIM-120A/B incorrect total missile weight:

https://community.gaijin.net/issues/p/warthunder/i/8neWOIwbKGAr

@David_Bowie @Gunjob

I think it is noteworthy that missiles such as the AIM-54 and AIM-120 are often modularly configured or upgraded with new parts. If the standard by 1995 changed to using specific parts - and discontinuing the use of old ones, we could expect the weight to increase as these parts are swapped out.

Missiles (like aircraft) cannot sit on a shelf. They need constant use and maintenance to ensure they operate properly. All military vehicles and ordnance are put through routine maintenance periods and often times this means routine upgrades are provided.

Ex; Older tank is upgraded with newer models turret drive as the older ones are no longer in production to ensure the fleet stays operationally ready.

I don’t know if you really can’t understand this or you are just trying to troll …

Spoiler

It’s not saying that AMRAAM is no more than 300 pounds
It says AMRAAM was originally intended to be a light weight missile because F-16’s wing tip pylon couldn’t carry more than 300 pounds.
It’s essentially talking about how the launch platform’s constraints imposes limitation on missile design.

Let us see “TO-34-16C” if you have it

I linked the document and there are others there if you take the time to look.

F-16 wingtip pylon weight limit is 300 pounds, why place a 345 pound missile? These documents are obviously skewing the data on purpose. You can’t tell that they’re obscuring the real numbers intentionally?

Did you forget the AMRAAM is supposedly 326-345 pounds?

We know the design limit for the AIM-120 was 350 pounds from the very start (1983), not 300, not 325, not 345.
https://sci-hub.ru/https://arc.aiaa.org/doi/abs/10.2514/6.1983-2684

This document states that the early development missiles were “two-thirds” the weight of the AIM-7M (510 lbs) - therefore, 341 pounds. We know this isn’t true because Hughes later makes the statement that the missiles’ tactical weight is 326 pounds. The British documents claim 327 pounds (AIM-120B?). The public numbers given in documentation are lies, fabricated to hide the truth and make the missile appear as though it is denser - or maybe longer distanced than it was to the Russians. It worked, they thought the AMRAAM had quite incredible range characteristics according to the data we can find.

Original F-16A’s wing tip pylon’s limit was 300 pounds.

No you did not, stop lying / trolling.
You linked the Korean study (which as far as I can see in the translated version does not even list the weight of the missile).

You did not link the “TO-34-16C”

BTW the correct name is “T.O. 1F-16C-34-1-1”
(Avionics and Nonnuclear Weapons Delivery Flight Manual)

So the Korean study couldn’t even get the name of the manual right :)

Link the “T.O. 1F-16C-34-1-1” if you have it

Nobody is saying the design limit for AMRAAM was 300 pounds
Neither me nor the ADP010957
You just can’t read

It says: “For example, AMRAAM was originally developed as a light weight
radar missile for carriage on the wing tips of the F-16, which has a 300 pound weight limit.”

Spoiler

Where

Already debunked:

https://community.gaijin.net/issues/p/warthunder/i/8neWOIwbKGAr
(Read section 6 in the report)

LOL, that would be what you are doing right now :)

Not for the Korean document.

You’re gonna argue again like you did for I-HAWK impulse and thrust?

You’re trying to tell the story but you don’t have all the puzzle pieces and the conclusions are based on a keyhole perspective of what you’re reading. Stop making these reports before consulting the forum and present your evidence prior to making more “not a bug” results.

Please screenshot where the weight of the missile is mentioned in the Korean study or in “TO-34-16C”

It’s easy to make baseless claims and post random links …

In fact I have all the puzzle pieces I need
I have multiple official primary sources that specify the weight of the missile

What do you have?
A 1992 UK document with design projections of what the weight of a missile that is going to be finalized and put into production 2 years into the feature and into UK service 3 years into the future will be?

You keep talking about “What Hughes says What Hughes says”
Why don’t you link it?
Let us see and inspect the document

Do you expect us to take your word for it?

There was another attached study but you need to pay to view these, cannot post them here. Just check that site, there are lots of good information there that you will be able to use to expand your keyhole vision of the world.

You actually don’t have a single primary source, I don’t know how it is so hard to understand that the manufacturer or person testing the ordnance is primary - manuals and other sources citing this data are secondary by nature.

The 1983 document states the missiles’ design weight goal was 350 pounds.

The 1992 UK document states the expected weight of the missile (presumably AIM-120B) will be, which is almost identical to the weight as stated by Hughes in 1985. I already shared Hughes’ data on your other bug report. The NATO SIXTEEN NATIONS report directly quoting Hughes for information on the AMRAAM.

No, that is why everything stated was linked. Why are you still going on and on about “primary sources” when only one has ever been posted?

The public propaganda numbers are still being used for AIM-120 production going into 2027;
See this document from 2018 saying the same exact weights. It states the initial production baseline is 326 pounds (AIM-120A), demonstrating current weights of around 344 pounds and a threshold of 350 pounds. As I stated previously, they knew what the maximum limit should be and tested aircraft up to that limit for stores and loading purposes so they could entertain the idea of product improvement over time with a maximum weight limit of 350 pounds.


Source

You just keep saying “there are good information there are studies”

What’s the name of the study you are referring to?

If you have the study, screenshot the weight
If you don’t, then how the f do you know it specifies the weight to be what you are claiming?

LOL

1- Official DoD SAR are primary sources.
They can’t falsify these reports for “PSYOP” like you are claiming … These are official government budget reports … They will end up in prison if they falsify these reports …

And if you actually look at the SARs that I have linked above, you see that they have a lot of redacted parts … If they don’t want the public to know any information in these reports they just redact it …
E.g. like they do in the FY 1991 SARs for the PATRIOT SAM:

Spoiler

2- You talk about “person testing the ordinance”
Yet, you are not the one who has based your claim on documents from “person testing the ordinance”
I have actually linked a document from “person testing the ordinance” in my report:

https://apps.dtic.mil/sti/pdfs/ADA355385.pdf

Spoiler

image

LOL

You mean this?

Spoiler

This is merely a magazine (Read: secondary source) from 1985 or before …
Note that it says:

“Our correspondent describes the weapon system which, beginning in 1986, will replace the AIM-7 Sparrow missile with the united states Air Force, Navy and Marine Corps, …”

It also says “In Europe, the weapon will equip the RAF’s TORNADO F.2 ADVs and …”

It’s total and utter trash …
Nothing it says matches reality …

And it’s from 1985 or before … When I’m using actual sources from 1991 and 1993 …

Spoiler

Stop making fun of yourself …

Then why do they incorrectly state information pertaining to missile weight? It shows baseline production (327 pounds) and projected 344 pounds production going on from what, 1993+? These are for pre-planned product improvement variations. Production baseline is that… the first production baseline. It’s 327 pounds.

There are 18 and 19 year olds working for less than minimum wage often redacting this information. Literally. Errors are bountiful. You could FOIA Outsider’s view and get half the document next week if you wanted - even though other FOIA requests have received the document in FULL.

Not for the AMRAAM they’re not. They DO NOT meet the definition of primary source. It’s a really basic concept.

Quotes from Hughes are still quotes from Hughes. Hughes is a direct primary source of information.

Btw you’re gonna highlight this but ignore IOT&E was started in '83, Hughes quote from '86 states missile weighs 326 pounds. So where does the additional weight come from thereafter? They just decide to put lead weights in the missile for production?

327 lb was the initial “development estimate”.
It turned out to be underestimated:

https://forum.warthunder.com/t/the-aim-120-amraam-history-design-performance-discussion/2584/1108

Again, where does the additional weight come from? The SAR baseline production estimate is 327. This means that missiles produced after 2018 cannot be less than the initial production weight of 327 pounds. This is how that is measured.