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next update
http://bhlanding.ient.com/warbirdsforum/viewtopic.php?f=8&t=254		 Page 1 of 2
Author:  bollok [ Wed Jan 17, 2018 12:27 am ]
Post subject:  next update
What to expect ?

No not dragons exactly..... but expect all new machines that spit fire...

Also a new "water based dragon" is born.

More pesky insects... but these ones will bite your head not just your feet.
Author:  bollok [ Thu Jan 18, 2018 11:00 am ]
Post subject:  Re: next update
What else can you expect in the forthcoming update?

Very strong tropical winds (for the 2nd time around)

Clear as mud eh ?
Author:  Pakrat [ Thu Jan 18, 2018 7:27 pm ]
Post subject:  Re: next update
Ant plans to redo the Yak 3 and 9? The 3 doesnt seem to match up with accounts of its speed and maneuverability.. has it ever been redone? Imagine the 9 needs a look at too..
Author:  bollok [ Fri Jan 19, 2018 5:53 am ]
Post subject:  Re: next update
Pakrat wrote:
Ant plans to redo the Yak 3 and 9? The 3 doesnt seem to match up with accounts of its speed and maneuverability.. has it ever been redone? Imagine the 9 needs a look at too..


They had some minor tweaks several updates ago. (not full rebuild)
viewtopic.php?f=8&t=213&hilit=FL+2050
Author:  Robert [ Sat Jan 20, 2018 7:45 am ]
Post subject:  Re: next update
Both the Yak-3 and Yak-9D were fully rebuilt in FL2046 and have recieved some minor tweaks since then: viewtopic.php?f=8&t=171

They should hit all the performance data regarding top speeds, climb rate, stall speed, roll rate etc. The Yaks had a quite high stall speed which gives them a large turning radius. This is due to their small wings with a wing area of only 159.8 sqft for the Yak-3, and 185.1 sqft for the much heavier Yak-9D. Compare this to a Spitfire's 242 sqft. The yaks were also a bit underpowered, their Klimov VK-105PF-2 engine producing only max 1300 hp at WEP. This can also be compared to a Spitfire IXe Merlin 66 engine providing 1740 hp at 9400 ft at WEP. What makes the Yak-3 quite agile though is it's very low weight for a mid/late war fighter, enabling it to out turn several late war fighters despite it's small wings and "weak" engine. I find it fairly competitive when flown to it's strengths in the Legacy arena, especially before the latest war fighters (P-51D/Fw190D/La7 etc) are out.

Are there any special areas where you find it underperform compared to historical performance data, sir? Be aware that the most common speed data one finds on internet and many books are from the prototype "Yak-1M Doblyor" P.R. test version trials. This plane reached around 355 mph at sea level and 404 mph at best altitude, but the actual production versions of the Yaks that were delivered to Russian combat units were generally 15-20 mph slower than the super slimmed "Doblyor" propaganda plane. The Yaks in Warbirds are based on the actual combat fighters with a top speed of 384 mph at 13000 ft.


Cheers :)
/Robert
Author:  bollok [ Sat Jan 20, 2018 1:36 pm ]
Post subject:  Re: next update
there be dragons...

Image
Author:  Pakrat [ Sat Jan 20, 2018 2:54 pm ]
Post subject:  Re: next update
Hi Robert.
Thanks for the update on the Yak3 and the modeling of it in game with the Klimov VK-105PF. I had been reading some accounts of them but it was with the Klimov VK-107 powerplant not the 105.. I also remember how this plane performed in WB2 and it was a faster leaner killin machine back then.. Has a bit of a snap to it you have to watch out for now but if you guys are happy with it then fine. Was just wanting to know where it stood in the realm of updated FM's. Thanks!!
Author:  Robert [ Sun Jan 21, 2018 7:33 am ]
Post subject:  Re: next update
My pleasure, Pakrat sir. :-)

Unfortunately the old flightmodels of Warbirds were/are not very historically accurate when it comes to handling and stall speeds etc. The Yak-3 historically not only had small wings, but also quite thin wings with a Clark YH profile of only 14% thickness ratio at the wing root. What this means is that it's wings cannot sustain a high angle of attack when pulling G's, and the plane more easily high speed stalls. A positive effect is that it is quite fast for it's low horsepowers due to lower drag, and the Yak was good at countering the German Fw 190 as it could easily turn inside a Fw 190A-8 and roll with it while almost matching it's top speed at low altitude.

The Yaks were documented to have quite a snappy stall behaviour with the wing dropping quickly at stall, which is what we've tried to model. Their predecessor the MiG-1 was extremely hard to fly with pilots stalling out and spinning to the ground even when intercepting German bombers. The Russian engineers fixed most flaws with the development of the MiG-3 which also was given automatic slats. The Yaks didn't have slats though in order to save money and production time, but their wings were a bit redesigned and more stable, although a Yak pilot still needs to know his aircraft in order to be able to fully ride on the edge of stall. I will fly the Yaks this week and check so that this snappy stall behaviour is not harsher than intended. It's always good to re-check things :-).

Bollok has been learning how to bring new flightmodels into the game, so tbh it should be quite possible to put the Yak-9U, with the VK-107A engine, in Warbirds if Ient approves. This version had a much stronger engine so should be both faster and hold a sustained turn better than both current Yak versions in Warbirds. Would be nice as this would allow the Yakovlevs to stay competitive even in the late war RPS era. I will look into it this coming week, sir.


<S>
/Robert


Image
Author:  Pakrat [ Sun Jan 21, 2018 2:15 pm ]
Post subject:  Re: next update
you rock Robert!! Thanx mate!!
Author:  Robert [ Fri Jan 26, 2018 8:15 pm ]
Post subject:  Re: next update
Happy to help :-).

And as Bollok said, except for a brand new Yak-9U the next update will feature a Seafire Mk III and two brand new Mosquitos for late war RPS's. Faster and meaner than ever. Expect the new update around the second week of February.


<S>
/Robert
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