AdurianJ

I pulled the descriptions of the Cockpit from the PDF of the pilot instructions people have been uploading ! Viggen Vänster Panel by AdurianJ, on Flickr Viggen Front Panel by AdurianJ, on Flickr Viggen Höger Panel by AdurianJ, on Flickr

He he you are going to enjoy arming the RBS15F :D :D

No the Navy moved on to MkII's but the air force to my knowledge still use those same missiles. Because of Budget cuts we haven't bought the Mk3 even though we produce it. It will still be years before the missiles will get upgraded, it's only thanks to Thailand buying the Gripen and wanting the RBS15 on the C/D version that it can even be carried ! YAY politicians !

Reading the manual and although fun i'm a bit angry parts about the RBS15F weren't still classified, the air force still use that missile.

I figured out what Glimtstörning is :D In the Swedish ECM manual it's described as a way of using noise jammers against say a monopulse radar or a semiactive radar missile. If you just use noise jamming all you do is reveal your position, now this might be fine in some situations when you can stand off outside missile range but inside missile range it's pretty bad. So what the radio link between two pods does is that the noise jamming is switched between two aircraft flying with a bit of distance between them. The alternating jamming causes a missile to act like a cat chasing two laser pointers and first steer towards one aircraft and then the other and then the first again etc, with good tactics this should cause any missile to fly between the two aircraft without hitting either of them. P.S. does someone have a better english word for what this is called other than "Switched Jamming" ?

Vetandets Värld is a Swedish science and technology show which can best be described as the Swedish version of NOVA on PBS. This episode which is all in Swedish is about the development of the viggen. There are some nice clips of the Viggen in it that's uncommon. At 13:50 you can see an RB05 launch and guidance !

The U22 pod is about 5 times better than the KA pod because it can target multiple threats and is more sensitive. The U22/A pod get's rid of the Freon cooling instead opting for different but closed loop system so it should be able to operate continuously it also has a new mode wherein it can blind a radar to anything behind the aircraft when it receives a pulse.

https://tanks.mod16.org/pdf/sfi/Fpl%20AJ%2037%20speciell%20f%C3%B6rarinstruktion%20(SFI)%20del%202%20kap%201.pdf I'm on Page 176 of the AJ37 Viggen driver instruction and it has great info on KA ECM pod, which is the first generation of the ECM pod used by the Viggen the AJS-37 carries the U22 possibly the U22/A. The ECM pod can only transmit for 40min after that it's open Freon cooling system runs out. As you can see in a potential war with Sweden the Ozone layer would become collateral damage :) The Pilot (referred to as the Driver) can choose two modes for the pod, Manual and Automatic. The Pod takes 180 second spin up time when either of these modes are selected it it was turned off beforehand. In the Manual mode the ECM pod transmit masking jamming (like white noise). In the Automatic mode the ECM pod uses deception jamming (like range gate pull off). The transmitter is Gyrostabilized and covers +-60 degrees horisontally and +-45 degrees vertically. You choose two programs for the pod before takeoff one for the manual mode and one for the automatic mode. The manual mode is the most limited as you have to choose the frequencies you want to jam in 500MHz or 250MHz intervals beforehand, pretty limiting. The pod can also initiate the Chaff pod to drop Chaff but it doesn't say when (pages are missing) but it's probably when the Chaff pod is set to drop on warning from the RWR and the KA pod detect a semiactive missile. Also some good news the App 27 might not have CW illumination detection but the KA pod have one because it needs it to jam semi-active radar missiles :D (damn we need a better ECM model in this game).

Serial #: 34601 Location: Stockholm, Sweden

The J35J would be awesome. I also think nothing is secret about the bird and people are still alive who seem happy to share their knowledge ! It's also a much more fun era to play in before active radar missiles became common !

Attacking from multiple directions was something one did against a group of ships. That way the escorts cant be concentrated in one direction. Also we've been discussing weapons mounts here but the main limiting factor is usually the number of fire control radars when a ship wants to engage multiple targets

http://www.aef.se/Avionik/Notiser/JA37_Avionik_Notis_2.htm As it say on this page (in Swedish) which is run by an association of people who has worked on avionics and electronics for the military. The Chaff and flare dispensers on the JA-37 Viggen where introduced in 1990.

It should be a Night photography pod on the left which contained IR film cameras while the one on the right side (from the aircraft POV) is a flash pod for low light photography illumination.

The lowest altitude of a Target for the SA-3 seems to be 100m which is way below where those sea skimmers fly. Even a more modern system like the SA-8 which was common in the Soviet fleet can only go down to 25m. What's often the problem when engaging very-low flying targets is that the proximity fuze initiate on the ground return.

You know what that means ! There need's to be more grudge matches !

I wrote most of that Swedish Wikipedia page with this Swedish PDF as a guide http://www.aef.se/Kopierade_dokument/Motmedel_Bengt_B.pdf The linked document is in Swedish sadly but it goes through the Swedish Air force Countermeasure systems in ever decreasing detail ;) from 1950 up to 2005. The AJS-37 and it's predecessor AJ-37 is covered in the PDF. The AJS-Viggen had the same Radar Warning Reciever as the AJ version. It was called APP 27 and it was sadly never upgraded throughout it's service life. It had 6 antennae each covering 60 degrees it had filters to separate high repetition radar pulses (say a tracking radar) but it sadly lacked CW warner so it wouldn't give you a missile launch warning for a semi-active missile. The Jamming pod however was a different story with both good and bad features. It had many names First being named KA then U22 then U22/A and last U22/B luckily this was all because it was continuously upgraded during it's service life. The Air force was basically not pleased with the KA pod's performance so in 1981 the U22 rebuild was being delivered aside from being able to process multiple threads it also had greater bandwith the U22 covered the Ku band something the KA pod didn't. This is important because fire control radars are often on that band as well as fighter radars like the Mig 21Bis radar. You have to select the jamming progam you want before takeoff (untill the U22/B when you can select between two pre-chosen). The pilot can only select active or standby during the flight. The Jamming is either done with wide area antenna in the front sector or with a directional antenna for more power also in the front sector. Sadly capsule can only be used the front sector. In the rear sector the aircraft has to rely on the Chaff dispensing KB pod. The pod did have a radio-link that could speak with a pod on another aircraft so they synchronized their jamming ( i think that's what "synkron glimtstörning" mean). The KB pod is interesting because it was developed as a chaff dispensor pod capable of supersonic flight as the legacy pod BOX-3 carried on the A32A Lansen which it would be based on was not. In the beginning the intention was that the KB pod would also contain EW electronics in the nose and tail but this never materialized. Instead the space in the tail was used to fit flares basically as an afterthought. The nose section remained empty throughout it service life sadly.

Norway had F5's

When i visited the small Swedish Missile Museum in Arboga i talked to the staff there and they told me the Gyro control unit was actually a direct development of the V1 missile which had been reverse engineered and fine tuned (an extra gyro was added for roll stabilization the V1 could famously be flipped over to make it crash). RB-04E and RBS-15 side by side by AdurianJ, on Flickr RB304A prototype (the A and B where prototypes) Rb04A by AdurianJ, on Flickr Guidance section of the Rb04C RB04C Guidance section by AdurianJ, on Flickr