DCS: AJS-37 Viggen Discussion

[RaXha]

MJ2 seems to be comparable to the blu108 skeets.

 

"Pansarvärnssubstridsdelarna will for ejection to deposit two wings which causes it to fall to the ground in a helical path. It begins search of the target area to find armored vehicles or equivalent. With multiple sensors, including a laser that provides a 3D imaging, evaluating all the possible targets to eliminate everything that is not a proper goal. When it found a target and decided to attack the target will wait until the rotated one more turn. Once again directed straight towards the goal detonate it, which sends a single impact body toward the target. Impact The body turns through the roof of the armored vehicle and hit it with a high verkanssannolikhet."

 

Google translate from the swedish BK90 page, but accurate enough to say it seems to be same design as the skeets, even if it is a much higer weight. Skeets are 1.5kg iirc.

 

To add to the understandability of the text:

pansarvärnssubstridsdelarna -> "The anti armor submunitions".

verkanssannolikhet -> "probability of effect".

Edited July 27, 2016 by RaXha
Words and letters and stuff...

[QuiGon]

Sorry if that has already been answered, but what radar modes does the Viggen radar has (e.g. Moving Target Mode?, dedicated Sea Mode?, how about A-A Mode?)?

[microvax]

Sorry if that has already been answered, but what radar modes does the Viggen radar has (e.g. Moving Target Mode?, dedicated Sea Mode?, how about A-A Mode?)?

 

AFAIK it has no dedicated AA mode. The AA mode is "point the radar upwards in AG mode".

Obviously you can range but there is no lock or track feature, neither an aim9 seeker head slew.

[QuiGon]

AFAIK it has no dedicated AA mode. The AA mode is "point the radar upwards in AG mode".

Obviously you can range but there is no lock or track feature, neither an aim9 seeker head slew.

 

That's what I thought, thanks. :thumbup:

 

So, what radar modes are there?

[mattebubben]

My understand was that there is a type of "auto lock" mode for ranging air targets (to give accurate info for either a gun or missile shot).

 

Basically the Radar search area is fixed and searches a small area cone straight ahead of you.

 

It scans an area 1000m-6000m and its a targeting mode rather then a search mode.

 

So you should have a visual of the target before using it.

But when you have a visual target you activate that mode and you put the target within the boresight circle on the hud and the radar will "lock" the target (within 1-2 seconds)

giving you ranging information and launch cues for either

Guns,Aim-9 or the RB05.

 

But yes the search mode is very basic as it just scans the area infront or above the aircraft and you will see a straight picture on the display

(so anything it sees will show up be it a aircraft or a mountain etc.)

 

While the radar is a bit old school (being mainly late 1960s tech) it does have some nice capabilities and it will be very interesting to use.

Edited August 1, 2016 by mattebubben

[mattebubben]

That's what I thought, thanks. :thumbup:

 

So, what radar modes are there?

 

Well you have Ranging and Search/Scan modes and then different variants of those different modes.

 

with Air-Ground Search and air-air search modes and air-air and air-ground ranging modes.

 

And also since its the AJS it got the radar Recce capability of the SH 37

(that the AJ37 lacked)

were the radar is able to take a "picture"

(A camera Saving what was shown on the radar display at that moment)

that could later be viewed and analysed back at base though not sure if this will be modeled since dont sea any real use for it in DCS.

 

The radar can be used for navigation

(since it can scan the area ahead of the aircraft and give the pilot an idea of whats ahead and how to avoid terrain etc that was especially important in giving the aircraft an all weather low altitude flight capability)

Recce (as previously mentioned)

and it can be used to assist in the deployment of most weapon types carried by the aircraft.

 

And its also used to find both air targets and naval targets

(as well as structures etc)

but its not made to pick up vehicle sized targets.

(thought it might be possible with a pilot that is skilled at reading the radar picture )

[QuiGon]

Well you have Ranging and Search/Scan modes and then different variants of those different modes.

 

with Air-Ground Search and air-air search modes and air-air and air-ground ranging modes.

 

And also since its the AJS it got the radar Recce capability of the SH 37

(that the AJ37 lacked)

were the radar is able to take a "picture"

(A camera Saving what was shown on the radar display at that moment)

that could later be viewed and analysed back at base though not sure if this will be modeled since dont sea any real use for it in DCS.

 

The radar can be used for navigation

(since it can scan the area ahead of the aircraft and give the pilot an idea of whats ahead and how to avoid terrain etc that was especially important in giving the aircraft an all weather low altitude flight capability)

Recce (as previously mentioned)

and it can be used to assist in the deployment of most weapon types carried by the aircraft.

 

And its also used to find both air targets and naval targets

(as well as structures etc)

but its not made to pick up vehicle sized targets.

(thought it might be possible with a pilot that is skilled at reading the radar picture )

 

Thanks :thumbup:

[amb]

I'm wondering about some things regarding the scan area of the radar, like how far ahead does it look? And does this vary with altitude or how does that work? Does it scan straight ahead in A2G mode or is it always pointed down by some degree?

 

If you're flying very low it seems that it should do a scan straight ahead in order to be able to give you useful picture, but if you're flying higher up that would of course not be necessary, so does the aircraft adjust this automatically based on altitude or how does that work?

 

Basically the two main things I'm wondering about is:

1) How big of a distance ahead is scanned by the radar (and does this vary with altitude)?

2) Will I be able to safely keep scanning in A2G mode without having to be afraid of showing up on other peoples RWRs? Given that they are flying on the same or higher altitude than me.

[RagnarDa]

1) The max distance displayed on the radar screen is 120km. The altitude of the airplane hasn't any effect except for larger parts of the scan area might be "in radar-shade" when flying low so you of course have a better and larger view high up. The picture is aligned with the ground so the attitude of the aircraft matters as the gimbal-range of the radar dish would restrict you from viewing terrain that is close (when pitching up) or far away (when pitching down).

 

2) Other aircrafts within the scan zone would get a beep on their RWR even though you are in air-to-ground mode. There is also the possibility you might pick out low flying aircrafts while in terrain-mapping mode.

[mattebubben]

I'm wondering about some things regarding the scan area of the radar, like how far ahead does it look? And does this vary with altitude or how does that work? Does it scan straight ahead in A2G mode or is it always pointed down by some degree?

 

If you're flying very low it seems that it should do a scan straight ahead in order to be able to give you useful picture, but if you're flying higher up that would of course not be necessary, so does the aircraft adjust this automatically based on altitude or how does that work?

 

Basically the two main things I'm wondering about is:

1) How big of a distance ahead is scanned by the radar (and does this vary with altitude)?

2) Will I be able to safely keep scanning in A2G mode without having to be afraid of showing up on other peoples RWRs? Given that they are flying on the same or higher altitude than me.

 

I dont have all of the specifics but i will answer what i can from what my understanding of reading the parts of the Manuals we have available is.

 

Lets start with the Nr.1

 

There are multiple different range modes available for the display.

 

Ranging from 15km to 120 km

(with the different ranges being 15,30,60,120)

 

Though the effective range most likely depend on what the radar is used for.

For example terrain scanning (of significant changes in terrain) and spotting larger ships should be possible at long ranges (100km + depending on weather etc)

 

Where as spotting smaller details and Aircraft would most likely be limited to shorter ranges.

 

And for the Nr.2

 

This would depend on the radar elevation or depression used.

 

For all the search modes there were standard elevations / depressions depending on exact modes / altitudes but it was also possible to manually elevate or depress the radar antenna.

 

The standard antenna elevation settings according to the manual for air-ground search modes were between -3,0 and -0,5 degrees depending on the range selected and the altitude flown amd can be found on page 28.

https://drive.google.com/file/d/0B8bCDRcq9BVeNzI2a3laZnBiZXM/view

 

So since the default antenna elevations are pretty shallow even at lower altitude a reasonable amount of sky will be scanned (if the terrain is flat enough) and any RWR within that area will likely be pinged.

Edited August 1, 2016 by mattebubben

[microvax]

This all sounds very promising !

[amb]

1) The max distance displayed on the radar screen is 120km. The altitude of the airplane hasn't any effect except for larger parts of the scan area might be "in radar-shade" when flying low so you of course have a better and larger view high up. The picture is aligned with the ground so the attitude of the aircraft matters as the gimbal-range of the radar dish would restrict you from viewing terrain that is close (when pitching up) or far away (when pitching down).

 

2) Other aircrafts within the scan zone would get a beep on their RWR even though you are in air-to-ground mode. There is also the possibility you might pick out low flying aircrafts while in terrain-mapping mode.

 

Thank you! That's very helpful.

 

So it should be fairly safe to use the radar if you're flying low, the only ones who would pick you up on their RWR would be the ones flying even lower than you, or basically on the same height.

[amb]

I dont have all of the specifics but i will answer what i can from what my understanding of reading the parts of the Manuals we have available is.

 

Lets start with the Nr.1

 

There are multiple different range modes available for the display.

 

Ranging from 15km to 120 km

(with the different ranges being 15,30,60,120)

 

Though the effective range most likely depend on what the radar is used for.

For example terrain scanning (of significant changes in terrain) and spotting larger ships should be possible at long ranges (100km + depending on weather etc)

 

Where as spotting smaller details and Aircraft would most likely be limited to shorter ranges.

 

And for the Nr.2

 

This would depend on the radar elevation or depression used.

 

For all the search modes there were standard elevations / depressions depending on exact modes / altitudes but it was also possible to manually elevate or depress the radar antenna.

 

The standard antenna elevation settings according to the manual for air-ground search modes were between -3,0 and -0,5 degrees depending on the range selected and the altitude flown amd can be found on page 28.

https://drive.google.com/file/d/0B8bCDRcq9BVeNzI2a3laZnBiZXM/view

 

So since the default antenna elevations are pretty shallow even at lower altitude a reasonable amount of sky will be scanned (if the terrain is flat enough) and any RWR within that area will likely be pinged.

 

Awesome! Thanks!

[QuiGon]

Thank you! That's very helpful.

 

So it should be fairly safe to use the radar if you're flying low, the only ones who would pick you up on their RWR would be the ones flying even lower than you, or basically on the same height.

 

There should be no one flying lower than a Viggen! :D

[WinterH]

There should be no one flying lower than a Viggen! :D

Except in DCS, where almost everyone fly anything at an altitude where they are trimming the tips of Caucasus grass using the edges of their air intake .

 

Even if someone goes ahead and releases a MiG-25, I'm sure people will try to fly it at grass height and complain "my MiG is too slow" :).

[QuiGon]

Except in DCS, where almost everyone fly anything at an altitude where they are trimming the tips of Caucasus grass using the edges of their air intake .

 

Even if someone goes ahead and releases a MiG-25, I'm sure people will try to fly it at grass height and complain "my MiG is too slow" :).

 

True that^^

[Mayo2017]

Bah, if you're trimming the tips of the grass with your air intakes, that just means you still have room to go lower. :music_whistling:

[Retu81]

Bah, if you're trimming the tips of the grass with your air intakes, that just means you still have room to go lower. :music_whistling:

 

The mechanic, who has to clean those intakes and likes to carry a big wrench, says: "No." :D

[Kelevra9987]

Bah, if you're trimming the tips of the grass with your air intakes, that just means you still have room to go lower. :music_whistling:

 

Except in the A-10. There it means that you are already dead :music_whistling::joystick::pilotfly:

[QuiGon]

Except in the A-10. There it means that you are already dead :music_whistling::joystick::pilotfly:

:lol:

[Dahlbeck]

Except in the A-10. There it means that you are already dead :music_whistling::joystick::pilotfly:

Not if you inverted!

[RaXha]

Not if you inverted!

 

[microvax]

 

Leatherneck plox, can we haz this cammo ? :D

[mattebubben]

That Paintscheme has to be included.

 

If only to prove that the show must indeed go on.

 

[ame]

[/ame]

[microvax]

That Paintscheme has to be included.

 

If only to prove that the show must indeed go on.

 

 

Or just to troll the fighters trying to intercept you hardcore level. :DD

 

I am training a bit with the mirage doing Viggen style missions, so I did a really quick really low alt strike against an enemy FARP in blueflag, and just burn away running for your life.

While indeed an su27 did try to shoot me down on the way back, he neither could catch up nor could he reach me with missiles, 4km at sea level at mach 1.15 simply leads to so much air resistance that none of the 4 27r one 27t and one r73 did reach me. xDD

He was winchester and did rtb after that. :D

 

 

Cant wait to do that with the Viggen ! :D