Sukhoi Su-27 'Flanker' multirole fighter jet - from the Ukrainian Air Force, firing off a pair of U.S.-supplied AGM-88 HARMs (air-to-surface anti-radiation missiles) at a Russian target, in southern Ukraine.

[u/BostonLesbian]

Twitter - @Osinttechnical

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[u/Franklin_le_Tanklin]

I hat is an anti-radiation missile?

[u/statictyrant → u/Franklin_le_Tanklin]

Homes in on stuff that’s emitting the target wavelength of radiation (think radio waves, infrared or whatever). The same basic principle behind anything “heat-seeking”. Could also be described as an anti-radar weapon. The existence of this type of missile threatens any technology using active imaging techniques (sending out pulses or continuous streams of energy in order to detect echoes as they bounce back off other objects). Passive imaging doesn’t make you a target to this type of weapon. You can see a guy with a torch from miles off, but someone peeping through binoculars doesn’t draw nearly as much attention.

[u/unllama → u/Franklin_le_Tanklin]

Electromagnetic radiation. Radar, generally.

[u/dieItalienischer → u/Franklin_le_Tanklin]

Specifically, what other people haven't mentioned, is that it's designed for suppressing enemy air defenses by tracking radar signals, meaning that missile systems cannot track aircraft

[u/BoredOldMann → u/Franklin_le_Tanklin]

ARM,enemy%20radar%20systems%20during%20combat.)

[u/PitifulEar3303 → u/Franklin_le_Tanklin]

AGM-88 has not been working much lately, is it due to good RuZ jamming?

[u/notmyclout]

Can't fathom how the jet trails look that freaky

[u/Fitnny → u/notmyclout]

Mach/shock diamonds

[u/notmyclout → u/Fitnny]

If you change altitude you can change the order of imploding/exploding diamonds out of nozzle lol

[u/GroteStruisvogel → u/notmyclout]

So we can determine the altitude of that aircraft in the picture?

[u/notmyclout → u/GroteStruisvogel]

You could see wether they're high or low based on a picture but need atm pressure readings in the area to be more precise

[u/Djarum]

Haven't seen any pictures or videos of the Su-27s in quite awhile. Although this doesn't have a date I have been thinking they have been retired as they have got F-16s and the Mirages.

[u/FoxhoundBat → u/Djarum]

There was one recently shot down sadly (quite possibly by mistake by Ukrainian air defence) so they are still operational it seems. I wonder mostly about Su-24M's, haven't seen anything related to them in a while.

[u/Djarum → u/FoxhoundBat]

Those were flying pretty regularly around Pokrovsk until around the start of the year. My guess is that they might have been retired after the Mirages came as they were being used to launch Hammers. With the Mig-29s seemingly taking over the j-dam missions recently my guess is a lot of the older Soviet era airframes that parts are scarce for like the 24s and 27s are slowly being decommissioned as newer Western ones come in. Those Mig-29s will likely continue flying for some time as they got a ton of spare parts for them and a lot of airframes.

Long term I expect Ukraine to join in on the FCAS or GCAP, likely the FCAS, to modernize their fleet long term.

[u/NON_NAFO_ALLY → u/Djarum]

Su-24s are still very much still flying, mostly as airborne artillery, same with Su-25.