Fishbreath Flies: DCS AJS 37 Viggen Review

Leatherneck Simulations is at it again: a 1970s aircraft modeled in loving detail. Once more, we get a plane which has virtues beyond accuracy. Leatherneck’s DCS Viggen has heart.

I’ve written about the Viggen’s history already, so if your first thought is, “Why should I care?”, there’s your answer. With that out of the way, we can move onto the plane itself.

Digital Combat Simulator made huge strides on this front with the release of its new rendering engine in 2015; Leatherneck has proven itself well above average at the graphical side of DCS module development. The MiG-21 was a work of art, and the Viggen is perhaps even more so. The external model is well done, and seems perfectly realistic to me1. The real artistry comes inside the cockpit, though. Flip on the battery and the low pressure fuel pump, and the master warning lights (labeled HUVUDSVARNING, because Swedish) come on, bathing the cockpit in a luminous flashing red. Turn them off and get through the rest of the startup checklist, then turn the radar on. The CRT casts its eerie green CRT glow over everything, and seems to glow with the inner light all displays of its type do.

Beyond the superb lighting effects, the cockpit also has the weathered feel you would expect from twenty-year-old airframes. (Remember, the AJ 37 Viggen is a 1970 plane; the AJS 37 Viggen is the 1990s update). It isn’t dingy, but it does look and feel as though it’s been used, and that adds tremendously to the plane’s character.

We come now to perhaps the best part of the Viggen: its sound design. Although the DCS engine may not do very well at exterior sounds for any plane, Leatherneck has still managed to make the flyby sound meaty, especially in afterburner. In-cockpit, the state of things is much better. Turn on the AC power, and the computer’s fans spin up with a sound that reminds me of my childhood machines. The master warning alarm has the same warmth to it as the light does. Later, the insistent chirp of the radar warning receiver gives way to the thunder of the afterburner, growing deeper by stages as the throttle clicks past its detents through the three afterburner power bands.

Sound is an important and underrated component to immersion in sims. The Viggen gets it spot-on. It’s good as any sim I’ve played to date.

Systems and weapons
The Viggen flies a mission profile rather out of favor in today’s world: interdiction. That is, it’s designed to fly at ludicrously high speeds and ludicrously low altitudes, carrying a wingload of bombs, rockets, or rudimentary guided weapons. It gets to its target, pops up at the last minute to aim its weapons, makes one pass, and heads home.

This is reflected in its design: the canarded double delta makes quite a bit of low-speed lift, but it does so inefficiently. The Viggen is happiest in its native habitat: Mach numbers greater than 0.6, altitudes lower than 500 meters above the ground. It does not fit into the low-intensity COIN world of DCS nearly so well as (say) the A-10C, the Ka-50, or even the Su-25. The weapons fit requires you to know where your target is, and even the air pressure at the target’s location. All of this (except for the air pressure) must be programmed into the computer ahead of time, or using the wee six-digit input display while flying.

So, don’t expect to do much loitering, waiting for JTAC, and dropping bombs precisely. Even if it was more straightforward, the Viggen has very little facility for dropping quantities of its weapons smaller than ‘all’. Only guided missiles fire one at a time.

Having introduced this section with an extended ramble, let me get back on point for a paragraph. The systems modeling feels right to me. I’m not an expert on Swedish systems of the 1970s and 1990s, but everything feels plausible enough, modulo some early-access issues Leatherneck is working through in weekly patches. Notable fun items include the overwhelmingly programmable RB-15 anti-ship missile, the BK-90 totally-not-a-low-altitude-cluster-JDAM, and the RB-05A manually-guided missile (easier to use than it sounds). The air-to-ground mapping radar works as expected; that is to say, it’s very cool, albeit with the confusing wrinkle that green means no radar return and black means return.

There are some ongoing issues with rearming, as well as some others involving weapons and multiplayer, but I’m confident Leatherneck will be able to get those squared away.

On to the most subjective point! Is it fun?

Yes. Yes it is.

The design of the HUD, with few numbers and lots of indicator lines, makes you feel like you’re flying a Swedish X-Wing, and the rest of the cockpit supports that impression. As the treetops zip by at four hundred knots, and the waypoint distance line on the HUD shrinks to indicate you’re closing in on your target, you can just picture yourself hurtling down the Death Star trench.

Maybe that’s an exaggeration, but the Viggen’s mission profile makes for a certain sense of rising anticipation as you speed toward your target. Do you know that stereotypical scene from adventure movies, the one where the sun inches toward a bejeweled staff placed just so, or the one where some narrator is speaking while an orrery clicks toward planetary alignment? Everything is building toward a single moment, and then, bam—the payoff. The sun sparkles off the jewel and lights up the model of the city below, the orrery’s planets align. That’s the feel of a Viggen mission done correctly. Your range-to-target dial—and it is a dial; the Viggen may be computerized, but it isn’t that computerized—ticks down toward zero. You pull up, catching a glimpse of your target as you do. You roll onto it, lining up the sighting mark in the HUD, and then, bam. You pull the trigger and your weapons strike home. There’s the payoff.

It’s tremendously exciting.

I recommend the Viggen wholeheartedly, based on its production values and on the sheer thrill I get out of flying it. I offer the following two caveats, though. First, it’s an early access product; more importantly, it’s an early access DCS product. There are still plenty of gremlins. Second, if you’re a multiplayer-primary player, be warned that there are several bugs and several usability issues to contend with. Even with those caveats, though, it’s an excellent aircraft, and I very much doubt you’ll be disappointed with your purchase.

  1. I don’t count rivets, though. 

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