Su-27 avionics question

[Kula66]

Found an interesting article on the WEB written by Wags, I think regarding Flanker,

 

"* Once commanded, a full system lock on may take up to ten seconds. As it is now, it only takes 1 to 2 secs.

* The IRST has a very limited capability in the forward quarter and is unusable for BVR target detection and tracking.

* Only the highest priority threat, as determined by the system, is displayed on the SPO-15 RWR gear.

* The system has no capability to detect pulse doppler radars in track-while-scan mode.

* To prevent false target indications, the forward RWR antennas are blocked during radar transmissions. This is very important to note: if the radar is in operation, the pilot will get NO RWR warning from a forward quarter emitter."

 

How much of this is implemented in LO? 1.1 From my limited 33 experience not much ... any plans to implement some of these features?

[GGTharos]

A lot of this is incorrect or misinterpreted. THe performance of the IRST is the only thing I'd put any faith in.

[Kula66]

Well its a quote from http://www.62ndfightingfalcons.asn.au/62ndff/dispatches/dispatches/selected/toorealistic.htm

 

So you are saying the info is incorrect? What are your sources on this?

[Wags]

Actually, they were points made by a US Navy exchange pilot with the German Air Force flying Fulcrums. It was from an article in the Top Gun Journal from quite a few years ago now.

 

-Matt

 

Well its a quote from http://www.62ndfightingfalcons.asn.au/62ndff/dispatches/dispatches/selected/toorealistic.htm

 

So you are saying the info is incorrect? What are your sources on this?

[Kula66]

Interesting articles Wags - thanks ... do you think we'll see these sort of 'features' implemented in LO (or its successor) ... or do you think that like the 15 radar features, they will get added to the end of a very long wish list? Should they be included?

 

By the way Wags, as a recognised font of info on this sort of thing ... does the 15 have a HUD mark to show friendly target locked?

[Wags]

I think that eventually Eagle will improve all the aircraft to be more in line with the real aircraft. It's more a question of when and I really don't know the answer to that.

 

Yes, the F-15C has an EID cue on the HUD (looks like a box within the TD box).

 

-Matt

 

Interesting articles Wags - thanks ... do you think we'll see these sort of 'features' implemented in LO (or its successor) ... or do you think that like the 15 radar features, they will get added to the end of a very long wish list? Should they be included?

 

By the way Wags, as a recognised font of info on this sort of thing ... does the 15 have a HUD mark to show friendly target locked?

[Trident]

Actually the IRST performace may be the one thing where the MiG-29 differs most from the Su-27 and its derivatives: the OLS on the Sukhois is cooled while the system on the MiG isn't, IIRC. Except for the thing about TWS detection the points about the RWR seem based on outdated info (I think the article was written in 1997? Anyway, with the flight manual now declassified I'm confident that ED knows where any inaccuracies are) / experience with a downgraded export airframe. IMHO the current SPO-15 in LOMAC is pretty good.

[coldcrew]

Actually, they were points made by a US Navy exchange pilot with the German Air Force flying Fulcrums. It was from an article in the Top Gun Journal from quite a few years ago now.

 

-Matt

 

but the fulcrum is not the flanker

[SUBS17]

Thats some interesting facts, how about the newer aircraft such as the Su30? Does it have the same problem?

[Pilotasso]

An IR sensor from a regular missile is cooled down and can track targets long past the rocket boosters range. Specialy against the cold sky. I would have not difficulty picturing a better system mounted on an aircraft. If the poor quality on german IRST's is true fact, then it must be to the fact that USSR used to export downgraded aircraft to its allies and that its own aircraft were made with components of far superior quality. A cooled IRST has the potential to track LONG way, but it will be blocked by something as simple and innocent as a stray cloud! And it cannot scan the sky like a radar does. You have to point it somewhere. Thus it remains a short range sensor.

[GGTharos]

An IRST has the potential to track A LONG WAY ... in space.

 

Anyting else, get your mastercard out and buy a radar. Front-quarter heat tracking is actually not that great at all, even in weapons with an FPA - it gets better as they get closer though and they're pretty smart weapons.

 

But old reticle type seekers? Dude, you can confuse those by farting :)

[BuzzU]

An IRST has the potential to track A LONG WAY ... in space.

 

Anyting else, get your mastercard out and buy a radar. Front-quarter heat tracking is actually not that great at all, even in weapons with an FPA - it gets better as they get closer though and they're pretty smart weapons.

 

But old reticle type seekers? Dude, you can confuse those by farting :)

 

Then i'll start eating more beans..:)

[Kula66]

Yes, the F-15C has an EID cue on the HUD (looks like a box within the TD box).

-Matt

 

Any pictures?

 

ED PLEASE, PLEASE INCLUDE THIS ...

[169th_Crusty]

An IR sensor from a regular missile is cooled down and can track targets long past the rocket boosters range. Specialy against the cold sky. I would have not difficulty picturing a better system mounted on an aircraft. If the poor quality on german IRST's is true fact, then it must be to the fact that USSR used to export downgraded aircraft to its allies and that its own aircraft were made with components of far superior quality. A cooled IRST has the potential to track LONG way, but it will be blocked by something as simple and innocent as a stray cloud! And it cannot scan the sky like a radar does. You have to point it somewhere. Thus it remains a short range sensor.

 

Very true Pilotasso... and somebody mentioned SU30? :)

[Kula66]

Regarding "* The system has no capability to detect pulse doppler radars in track-while-scan mode."

 

Shame this isn't modelled ... :)

 

* To prevent false target indications, the forward RWR antennas are blocked during radar transmissions. "

 

I assume the later is just temporarily switched off while the radar radiates, and then on again many times a second ... so it still reports enemy radar out there ... just slows the update speed. Rather than completely disabled!

[Octav]

Regarding "* The system has no capability to detect pulse doppler radars in track-while-scan mode."

 

Shame this isn't modelled ... :)

Actually, it detects them, but since TWS is actually a scan mode, not a lock mode, it won't provide a lock warning.

 

* To prevent false target indications, the forward RWR antennas are blocked during radar transmissions. "

 

I assume the later is just temporarily switched off while the radar radiates, and then on again many times a second ... so it still reports enemy radar out there ... just slows the update speed. Rather than completely disabled!

Actually, this has no effect - the radar duty cylce (the transmitting/non transmitting ratio) is very small, and since the receiving antennas can sense the signal strength, they can reject the plane's radar interference - there's no problem in seeing your opponent, in a head-on fight, with both fighters locking each other, on the RWR - this has been tried.

[Hitman IF]

ED PLEASE, PLEASE INCLUDE THIS ...

 

Seconded. Preferably in the next 1.1 patch rather than wait till 1.2. :icon_pray :dreaming: :icon_pray