Moving this project over where it belongs as I've gone about building something.

Swedish strategy during the entire Cold War rested on the assumption that Sweden hardly would be able to dislodge an enemy having established a proper and secure bridgehead on Swedish soil. To accomplish this, the idea was to sink his landing tonnage during the crossing of the Baltic Sea. Initially, this was to be done by shipborne torpedos and airborne rockets and bombs, but later on, in the early 1960's, technology had advanced far enough to permit a switch to missiles, both in the air, from 1961, and on the sea from 1966. The main carrier of these air-to-surface missiles was the Lansen attack aircraft.

In the 1960's, a major spy scandal made it rather clear that the Soviets were well aware of the Swedish strategy, and hence most likely would start any attack by striking at the airbases, thus decimating the air force before it could strike. As these strikes likely were to be nuclear, and possibly by missiles, the peacetime airbases were deemed undefendable in the long run, and the answer was dispersion. Accordingly, secondary wartime airfields were reconnoitred and constructed allover Sweden, but as that work commenced, it was also understood that the replacement of the somewhat asthmatic Lansen bomber, needing at least a 1500m runway to be able to get off the ground, should have a priority on STOL/VTOL capacity, thereby further enhancing dispersal possibilites.

Enter the Viggen project. Several designs were looked at, a good few based on an enlarged and up-engined Draken fighter design, but as this didn't quite meet the STOL requirements, other solutions were sought before the now so familiar canard wing came along. A few of these designs was centered around the new Bristol Pegasus engine and it's revolutionaly vectored thrust system. And that's were my modelling project will take its beginning.
The starting point is this project drawing, found in a reference book about the SAAB Viggen fighter.

You cannot view this attachment.

Rather quickly, the delta configuration was dropped as it interfered badly with the jet efflux in take-off and landing configuration, and the project moved on towards canards.

While this delta configuration might be the subject of a later build, I think I'll be looking at a more conventional layout with the Harrier fuselage I have available. More to follow.

Do you need another Harrier Fuselage? If so I can send you an ESCI AV-8A kit

Gondor

It's funny how, once you've chosen a single Pegasus as your V/STOL powerplant, the Harrier more or less designs itself. The Swedish, French and German projects all had similar fuselage layouts and looks. The only major difference is the choice of wing planform.

Or make the canards rotate 90 degrees to help with the STOVOL capability.  One could of course reduce the longitudinal size of the delta and make the wings longer (you're welcome Kit @PR19_Kit 😎), either with a straightforward wing or by using winglets, to retain the surface area.

Damn!  Now I want to cross-kit a Viggen with a Harrier and paint it in splinter camouflage.  Or I could shove a pair of canards on another P1154 of my dad's that could do with a strip down and refurb, and paint it in the same Swedish scheme.  Or put @Freightdog862 Lightning variable geometry wings on either the P1154 or a Viggen, still in SwAF markings, to allow STOL from damaged runways....

Oh well, I might as well start 2024 as I mean to carry on 🤔  .

Happy New Year everyone!

Quote from: Accidental Loggie on December 31, 2023, 07:33:37 PMOh well, I might as well start 2024 as I mean to carry on 🤔  .

Don't think of it as a Bad Thing...    

Quote from: Accidental Loggie on December 31, 2023, 07:33:37 PMDamn!  Now I want to cross-kit a Viggen with a Harrier and paint it in splinter camouflage.  Or I could shove a pair of canards on another P1154 of my dad's that could do with a strip down and refurb, and paint it in the same Swedish scheme.  Or put @Freightdog862 Lightning variable geometry wings on either the P1154 or a Viggen, still in SwAF markings, to allow STOL from damaged runways....

Or ALL of the above! 

Happy New Year too.

I found this online.  No other information I could see.  Looks good in Fields and Meadows.



https://forum.dcs.world/topic/167031-outdated-av8bna-paint-kit/page/2/

Quote from: zenrat on January 01, 2024, 03:26:23 AMLooks good in Fields and Meadows.

EVERYthing looks good in Fields and Meadows!

Hm, maybe not a Beverley though....................

Copying over this very good run-through to save it in my build thread:

Quote from: Weaver on December 31, 2023, 07:05:44 PM

Quote from: jcf on December 30, 2023, 10:26:39 AMThe X-32 isn't a four-poster lift design like the Harrier, it has a 2-D rotating nozzle like the F-35 and the Yak-141. The SAAB delta design wouldn't have worked because of the standard Pegasus four nozzle configuration. The biggest problem being trying to push all of that flat area straight-up, there's a reason the Harrier had small wings, the trapped exhaust efflux would cause all kinds of problems.

The principle reason why the Harrier had small wings was to reduce 'dead' weight in the hover as much as possible. Given that Harriers ascend quite slowly in VTO, I doubt whether the air resistance of a bigger wing would have much effect: after all the AV-8B's wing is MUCH bigger than the AV-8A's.

Trapped exhaust efflux can be a blessing or a curse, depending on how intelligently you can exploit it. The AV-8B does a good job of this. The reason why it's inboard pylons are so deep is because in the hover, the flaps are dropped, creating a 3-sided box between the fuselage, the pylon and the flap, which increases lift when in ground effect. Likewise, it has a 4-sided box under the fuselage, formed by the gun pods and/or their strakes, the main gear door and a retractable air dam (the LID: Lift Improving Device) between the pods at the front. I don't see why, in principle, the SAAB design couldn't do similar things, and perhaps even get more lift boost due to the bigger wing area.

My main issue with the SAAB's wing planform is that 60-ish degree deltas are best suited to supersonic applications, but the Pegasus's low net exhaust velocity makes that impossible. In level flight, a Pegasus is more akin to a an airliner's high-bypass turbofan than a 'proper' fighter engine. That's why the P.1154's BS.100 engine used plenum-chamber (i.e. cold nozzle) burning instead of hot nozzle afterburning: the most critical thing to make it go faster was to raise the low exhaust velocity of the front nozzles.

The delta wing also puts outboard weapons stations a long way behind the CofG compared to the Harrier's wing, and CofG balance is especially critical for a VTOL design.

I couldn't have put it better myself, but this is my main interpretation of the Harrier wing vs the SAAB wing too.

As far as a Beverley in fields-and-meadows - we all know we need someone to try it.. 

Quote from: zenrat on January 01, 2024, 03:26:23 AMLooks good in Fields and Meadows.

EVERYTHING looks good in Fields & Meadows! 

BTW, looking forward to see this materialize. I also added this to my WBT™ (Whiffy Bucket List), even though I am not certain when or how it might materialize. But it could be that I have Matchbox Harrier somewhere as a basis, even though it might be a Sea Harrier.

Quote from: Pellson on January 01, 2024, 04:18:59 AMAs far as a Beverley in fields-and-meadows - we all know we need someone to try it.. 

I'm afraid mine's slated to be in Court Line's pink scheme, which will be just as noticeable. 

Quote from: Pellson on January 01, 2024, 04:18:59 AMCopying over this very good run-through to save it in my build thread:
...
I couldn't have put it better myself, but this is my main interpretation of the Harrier wing vs the SAAB wing too.

Thank you! 

Quote from: PR19_Kit on January 01, 2024, 08:42:38 AM

Quote from: Pellson on January 01, 2024, 04:18:59 AMAs far as a Beverley in fields-and-meadows - we all know we need someone to try it.. 

I'm afraid mine's slated to be in Court Line's pink scheme, which will be just as noticeable. 

There's a flying pig joke in there somewhere. Maybe you could have Pink Floyd hire one for a certain album launch...

Quote from: Weaver on January 01, 2024, 06:00:56 PMThere's a flying pig joke in there somewhere. Maybe you could have Pink Floyd hire one for a certain album launch...

I'm hearing the soundtrack already................... 

Quote from: Dizzyfugu on January 01, 2024, 04:32:21 AM

Quote from: zenrat on January 01, 2024, 03:26:23 AMLooks good in Fields and Meadows.

EVERYTHING looks good in Fields & Meadows...

Including a Tiger Moth.