Is that the same with IVEWS or Viper Shield?
IVEWS seems to have new antennas for both the “Beer Can” receivers on the wings, and the receivers on tip of the fin
Viper Shield probably still uses the same antennas for its DRWR system as ALR-69A. L3Harris were already the manufacturer for those sub-assemblies on ALR-69A
The antennas on e.g. Bahrain, Taiwan, Slovakia etc. Block 70s, don’t look different to how things were on the Block 50/52+ with ALR-56M. Which is what the USAF replaced with ALR-69A on PoBIT within the same form/fit for the antenna fairings.
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Semi off-topic (but related to what you’re saying): I really like the early design of the F404 exhaust petals.
Thanks, iirc IVEWS is only tested on Block50 atm?
AFAIK IVEWS use ALR39
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IVEWS isn’t an RWR, it’s a EW suite. IVEWS is only for domestic F-16s.
Viper Shield itself is inapplicable to the topic, as it’s solely used on export Viper packages.
Even then its inbuilt RWR lacks a lot of USAF-specific abilities, such as GPS algorithms that allow the RWR to estimate and store GPS positioning of RWR contacts or the ability to distinguish a signal’s estimated elevation.
I’m sure Elbit may have some home-grown system that can process signals to a good degree, but I don’t know if it’s sophisticated enough to get exact incidence angles out of them.
It also has an open threat library, given that it’s designed for use in various different countries.
Both ALR-69A and ALQ-254 have a vertical lobe precision of +/-30dg. Neither have deadzones. Both do indeed give a full +/-180dg vertical but without guaranteed precision.
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Are the upper points not transmitters? I’m not too familiar with CJs, so sorry if that is wrong.
There is no “ALR-39”, there’s an APR-39 which is in your linked site, but that’s expressly used for technical aircraft like 130Hs and UH-60s and quite a few combat-oriented helicopters.
That’s a contract request, as I’ve said the only users of ALQ-257 are domestic F-16 units.
The most allowed for export was granted with a very strict FMS release, so this DSCA request leaves it up in the air.
They aren’t purchased, nor are the listed options set in stone. There’s a reason why it reads:
Okay, fair, Poland choose Viper Shield
For ALR-56 at least, they were receivers like the beer cans
I think the transmitters for IVEWS are in the two extended position light lobes on the sides of the intakes. Those are noticeably bigger than a standard USAF F-16C on the photos I posted before of the test airframes F-16 Fighting Falcon: History, Performance & Discussion - #1183 by da12thmonkey
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The word “interdependencies” seems to have slipped past ya, this is an Army site for their integration of IVEWS into the by the Army. Yknow, AH-64s and UH-60/MH-60s?
APR-39E, as I’ve said before, is expressly used for helicopters and niche utility aircraft. Given that APR-39E is needed for the FVL suite, and the next-gen ASE suite as a whole is based on IVEWS, they’re deducing that APR-39E is capable of being a sole RWR fixture of IVEWS despite it not being a dedicated ECM system in itself.
Wait. It says that APR-39 is detect system for USAF F-16 IVEWS. Nothing more.
And NG IVEWS page for some reason uses APR-39 antenna
I understand that much, the full digital receivers that replaced the superheterodyne dude up on the vert stab are both known to me, but to my knowledge the IVEWS rear 120dg output is done by those antennae on top of the vert stab, as the previous image pointed out.
Both of those are expressly for the right and left receiver coverage zones, but I have no clue what the difference in size may entail. Maybe it is true that a transmitter was added alongside the receivers?
Even the URL you’ve given is titled ‘-ase’, which is the Army’s provisional name for “aircraft survival equipment”. If you’ve read their FY24 release which details their ASE procurements then you’d see that APR-39E is explicitly tied to the FVL’s ECM program.
The FVL’s ECM suite is, as I’ve said, directly based on IVEWS.
Breaking news, Snorethrop Grumblin’s PR team doesn’t give two shits about what they portray.
I know. But why it writes that IVEWS on F-16 uses APR-39?
That’s the problem
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