First of all, I think the Yak-3U would be totally something different from other Yak-3 Variants, since it has a Radial Engine. it would be Placed at Tier IV. ( Non prem )

 

The last piston-engined fighter to be produced by Yakovlev, was the Yak-3U. Retaining the light alloy stressed-skin metal wing and tail surfaces of the second-generation Yak-3, it mated these elements with an entirely new fuselage and an ASh-82FN 14-cilinder two-row radial engine rated at 1850 hp. The engine was extremely close cowled, careful attention was given to the hermetic sealing of the fuselage. Armament consisted of twin synchronised 20mm B-20 cannons, these were interchangeable with a pair 23mm NS-23 cannons. The Yak 3 was considered to be the best low altitude (below 13,000 feet) fighter of WWII and could easily out climb, outrun and out turn its two major adversaries, the BF-190 and FW-190. With its 20mm cannon it also could destroy any of the German tanks of that era.  The Yak-3U replaced the V-12 engine of the earlier Yak-3s with many a 1850 HP radial along, with many other changes. The Yak-3U first flew in May 1945 and with the end of the war and development of the jet aircraft., was not put into production.

 

As early as 1941 Yakovlev was considering means whereby he could wring the highest possible performance out of the basic Yak-1 design. As there was no immediate prospect of more power, and armament and equipment were already minimal, the only solution seemed to be to cut down the airframe, reduce weight and reduce drag. In the Yak-1M the wing was reduced in size, the oil cooler replaced by twin small coolers in the wing roots, the rear fuselage cut down and a simple clear-view canopy fitted, the coolant radiator duct redesigned and other detail changes made. The result was a fighter even more formidable in close combat than the Yak-1 and Yak-9 families, though it landed faster.
 
The production Yak-3 was further refined by a thick coat of hard-wearing wax polish, and after meeting the new fighter during the mighty Kursk battle in the summer of 1943 the Luftwaffe recognised it had met its match. Indeed by 1944 a general directive had gone out to Luftwaffe units on the Eastern Front to "avoid combat below 5,000 m with Yakovlev fighters lacking an oil cooler under the nose". To show what thje Yak-3 could do when bravely handled, despite its armament - which was trivial compared with that of the German fighters - on 14th July 1944 a force of 18 met 30 Luftwaffe fighters and destroyed 15 for the loss of one Yak-3. Small wonder that, offered all available Soviet, British or American fighters, the famed Normandie-Niemen Group changed from the Yak-9 to the Yak-3 and scored the last 99 of their 273 victories on these machines. 
 
This aircraft was an attempt to "cross" the glider Yak-3 with an engine Shvetsov. Most of the engine power gave hope that the Yak-3 in this modification may be the best Soviet fighter. To replace the radial engine fighter needed to radically revise the nose of the fuselage. Some design changes had to be made to other parts of the aircraft. Wingspan increased to 9.4 m, and their area has increased by 0.5 m2. Metal fuel tank replaced by soft, while increasing their capacity to 110 liters. To keep the view from the cockpit, the pilot's seat raised by 84 mm. The fuselage and empennage duralumin, armament consisted of two guns B-20C with ammunition 120 rounds on the barrel.
The weight of the new machine proved to be extremely small - only 2792 kg. The assembly of the aircraft began January 20, 1945 in Novosibirsk, and ended April 23, 1945 in Moscow. Factory tests began April 29. At an altitude of 6000 meters Yak-3U developed a speed of 682 km / h. The height of 5000 meters plane gained 3.9 minutes. To further improve the performance of the car, she was sent back to the Design Bureau to replace the wooden wing of metal. Works ended September 25, 1945, but because of the end of the war the further development of the project has not received. The experience gained from the creation of the Yak-3U, used in the design of the Yak-11.
History has fighter Yakovlev another page. Orenburg plant received an order from Santa Monica, United States for 20 copies of the Yak-3 rich American millionaires. Airplanes fly, but instead of the standard engine Klimovsk them installed Allison engine capacity of 21 925 kW. One such aircraft was delivered to the transporter AN-124 at the air show in Paris in 1993. The car was carrying a spectacular gray-dark gray camouflage, and enjoyed great success among the visitors.
 
 
Yak-3U
Wingspan, m 9.40
Length, m 8.17
Height 2.42 m
Wing area, m2 17.15
Weight, kg
empty aircraft 2273
normal take-off in 2792
Engine Type 1 PD AL-82FN
Power, hp 1 x 1850
The maximum speed, km / h 705
Practical range, 778 km
Rate of climb, m / min 1282
Service ceiling, m 11250
crew 1
Armament: two synchronous cannon B-20C with the ammunition of 120 shells.
 

Ingame infos :

It would be the First Yak-3 in Tier Iv that isnt Premium. it would came directly after the Yak-3P.

 

The 2x20mm could be upgradeable to 2x23mm

 

Price : 250000 s.l.

Repair Costs : 12500 s.l.

Time for free Repair : 90 h 50 m

Rating : 5.0

 

---as a Premium ---

 

Price : 2550GE

 

Repair Costs : 7500 s.l.

 

Time to free repair : 25 h 23 m

 

Rating : 6.3

 

 

Ingame Default Camo :

_BEL1798%20Yak-3U%20R200%20N46463%20Stea

(Without numbers and Civil Coding)

 

some additional pictures :

yak3u-1.gifabout_yak3_2.jpg

 

References :

http://www.google.de/imgres?imgurl=http%3A%2F%2Fwww.yakassociation.nl%2Fuserfiles%2FImage%2Fabout_yak3_2.jpg&imgrefurl=http%3A%2F%2Fwww.yakassociation.nl%2Fyak3u.php&h=388&w=256&tbnid=JDxz1BaKSvsKmM%3A&docid=W8JVNvW-t3xNNM&hl=de&ei=QonlVbWMKMamsgH4443oCw&tbm=isch&iact=rc&uact=3&dur=230&page=2&start=25&ndsp=25&ved=0CJ4BEK0DMChqFQoTCLW1tY3b1ccCFUaTLAod-HEDvQ

https://de.wikipedia.org/wiki/Jakowlew_Jak-3

 

http://www.militaryfactory.com/aircraft/detail.asp?aircraft_id=635

http://www.flugzeuginfo.net/acdata_php/acdata_yak3_dt.php

 

http://forum.valka.cz/topic/view/33577/Jakovlev-Jak-3U-VK-107A

I think alot players would enjoy this Aircraft more if it would be a non premium one :)

 

Thanks to Ottobon, who helped me with this :)

Edited by blakeob
Added prefix tag.
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Looks more like something from Lavochkin line. But yeah, looks fun. I especially would be looking forward to those 2x20mm that can be exchanged for 2x23mm.

 

Could you maybe also post some performance information? Something like on Wikipedia, but more detailed?

[spoiler]Yak-3 fitted with Shvetsov ASh-82FN radial engine with 1,380 kW (1,850 hp) in an attempt to increase performance while avoiding the overheating problems of VK-107 and VK-108. Wingspan increased by 20 cm (8 in), wings moved 22 cm (9 in) forward, cockpit raised by 8 cm (3 in). Armament of 2 × 20 mm Berezin B-20 cannons with 120 rpg. The prototype reached 682 km/h (424 mph) at 6,000 m (19,685 ft) and while successful did not enter production because it was completed after the war. Flying a modified replica Yak-3U manufactured in Romania in 2005 and powered by a Pratt & Whitney R-2000 engine, William Whiteside set an official international speed record for piston-engined aircraft in the under-3,000 kg (6,615-pound) category on 10 October 2011, reaching 655 km/hr (407 mph) over a 3-km (1.863-mile) course at the Bonneville Salt Flats in Utah in the United States, greatly exceeding the previous record of 491 km (305 mph) set in 2002 by Jim Wright. The following day, Whiteside used the same aircraft to set an unofficial speed record for aircraft in the category of 670 km/hr (416 mph) over the same 3-km (1.863-mile) course.[/spoiler]

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Looks more like something from Lavochkin line. But yeah, looks fun. I especially would be looking forward to those 2x20mm that can be exchanged for 2x23mm.

 

Could you maybe also post some performance information? Something like on Wikipedia, but more detailed?

[spoiler]Yak-3 fitted with Shvetsov ASh-82FN radial engine with 1,380 kW (1,850 hp) in an attempt to increase performance while avoiding the overheating problems of VK-107 and VK-108. Wingspan increased by 20 cm (8 in), wings moved 22 cm (9 in) forward, cockpit raised by 8 cm (3 in). Armament of 2 × 20 mm Berezin B-20 cannons with 120 rpg. The prototype reached 682 km/h (424 mph) at 6,000 m (19,685 ft) and while successful did not enter production because it was completed after the war. Flying a modified replica Yak-3U manufactured in Romania in 2005 and powered by a Pratt & Whitney R-2000 engine, William Whiteside set an official international speed record for piston-engined aircraft in the under-3,000 kg (6,615-pound) category on 10 October 2011, reaching 655 km/hr (407 mph) over a 3-km (1.863-mile) course at the Bonneville Salt Flats in Utah in the United States, greatly exceeding the previous record of 491 km (305 mph) set in 2002 by Jim Wright. The following day, Whiteside used the same aircraft to set an unofficial speed record for aircraft in the category of 670 km/hr (416 mph) over the same 3-km (1.863-mile) course.[/spoiler]

indeed, 

 

-more info added

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The Yak-3U is my all time favourite Yak, and it would be a nice addition to the Yak tree ingame.

 

Open for discussion  :salute:

totally Agree, i love The Yak-3U. Its ...its.. its something special :)

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I absolutely agree with this suggestion, however in my opinion its performance would actually dictate that it would be the end-line Yak as its far superior to any of the late Yak-9s in the game.

 

 

We do finally have the Yak-3 VK-107 in the game, what differs with this is that it trades aerodynamic cleaniness for not just more power but less weight, so much so that if this gets added it would have the highest power to weight ratio of any prop plane by a fair margin knocking BF 109 K-4 and Spitfire LF MK IX out of the top spot in that catagory.  According to some sources its faster at SL by a few kph then Yak-3 VK107 but at altitude they are either tied or Yak-3 VK-107 is slightly faster, also climbed quicker to 5km by about 5% quicker (3.8 minutes to 5km rather then 4 minutes).  It would be a absolute monster at low altitude energy fighting eitherway, and quite maneuverable to boot. 

 

 

Note to Hueynam1234: You listed Maximum Take-off weight as Normal Take-off weight, if you translate your source this is very obvious.  I'll try to find Normal Take-off weight if possible, used to have links to info about this plane as well but a few months back was forced to uninstall all my internet browsers and all the bookmarks so can't say for 100% sure if i can find it.  iirc it was around 5850lbs/2650kg.

 

You may want to try PMing "Nabutso", he isn't around much but had built a small list of technical specifications for this aircraft. 

 

 

For research i recommending using a browser with a built in translator and searching "Як-3У"  (cyrillic for Yak-3U) then translating the results

 

 

Using this method here are some additional sources

 

http://www.airwar.ru/enc/fww2/yak3u.html

 

http://wunderwafe.ru/Magazine/AirWar/33/06.htm

 

http://www.dmitray.narod.ru/yk3u2.htm

 

https://books.google.com/books?id=coE8AwAAQBAJ&pg=PA113&lpg=PA113&dq=%D0%AF%D0%BA-3%D0%A3&source=bl&ots=NFjxFKTH6N&sig=hfm1iUjGZfRcfbnB-xOiDhOi7OA&hl=en&sa=X&ved=0CFQQ6AEwB2oVChMI852X-OzVxwIVDRGSCh2W9ABA#v=onepage&q=%D0%AF%D0%BA-3%D0%A3&f=false

 

Second note: Most of these sources list "2792 kg" as take-off weight, maybe add that to description above

Edited by Ottobon
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I absolutely agree with this suggestion, however in my opinion its performance would actually dictate that it would be the end-line Yak as its far superior to any of the late Yak-9s in the game.

 

 

We do finally have the Yak-3 VK-107 in the game, what differs with this is that it trades aerodynamic cleaniness for not just more power but less weight, so much so that if this gets added it would have the highest power to weight ratio of any prop plane.

 

 

Note to OP: You listed Maximum Take-off weight as Take-off weight, if you translate your source this is very obvious

hmm indeed.. 

 

btw, i didnt translate the text. its directly from the side actually

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It appears the specifications you copy and posted (the part in czech i think?) is actually information for the Yak-3 VK-107  :Ps i suggested you correct it to Yak-3U infomation, added some info to first reply

 

Heres what i deduced from sources i linked above, largely this website, its important as the wing area, weight, power, engine etc etc is all very different from Yak-3 VK-107, its not just lighter and more powerful but has different wings with more area as well :D

 

Yak-3U

Wingspan:  9.40m

Length: 8.17m 

Height: 2.42m

Wing area:  17.15m2

Weight:-empty aircraft   2273kg  -normal takeoff   2740kg  (initially prototype was 2792 but fell to 2740 from prototype to pre-production due to use of new all-metal wing)

Engine's type: ASh-82FN 1850hp

The maximum speed: 620 kph at SL, 710kph at 6100m (Finalized model, earlier prototype did only 682 at 6km)

Practical range:   778km

Time to 5km: 3.8 minutes (3.9 min on prototype)

Fuel Capacity: 110 liters

Service ceiling,  11250m 

Armament:  two synchronous cannon B-20 with the ammunition of 120 shells.

Edited by Ottobon
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It appears the specifications you copy and posted (the part in czech i think?) is actually information for the Yak-3 VK-107  :Ps i suggested you correct it to Yak-3U infomation, added some info to first reply

 

Heres what i deduced from sources i linked above, largely this website, its important as the wing area, weight, power, engine etc etc is all very different from Yak-3 VK-107, its not just lighter and more powerful but has different wings with more area as well :D

 

Yak-3U

Wingspan:  9.40m

Length: 8.17m 

Height: 2.42m

Wing area:  17.15m2

Weight:-empty aircraft   2273kg  -normal takeoff   2740kg  (initially prototype was 2792 but fell to 2740 from prototype to pre-production due to use of new all-metal wing)

Engine's type: ASh-82FN 1850hp

The maximum speed: 620 kph at SL, 710kph at 6100m (Finalized model, earlier prototype did only 682 at 6km)

Practical range:   778km

Time to 5km: 3.8 minutes (3.9 min on prototype)

Fuel Capacity: 110 liters

Service ceiling,  11250m 

Armament:  two synchronous cannon B-20 with the ammunition of 120 shells.

Haha Thank you ! your first post with all the infos didnt show up for me... dunno why. i fixed some parts andactually 2-3 sites form you say excactly the same as each other you linked :D

 

but thank you very very very very much ! o7 

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Haha Thank you ! your first post with all the infos didnt show up for me... dunno why. i fixed some parts andactually 2-3 sites form you say excactly the same as each other you linked :D

 

but thank you very very very very much ! o7 

 

 

No problem, i've been thinking about this plane for awhile and very interested in it but when Yak-3 VK-107 was confirmed i decided not to write suggestion, so thanks for doing this and happy i could help

 

i think first part didn't show up because i have a tendency to edit posts when as soon as i start finding positive info.  Its a bad habit i have to press post and then realize i wanted to post alot more XD

 

 

Looks like a mix between a Yak and an La xD I want it!

 

 

Yeah there where lots of projects to fit the ASh-82FN into various fighter airframes, Mid-9E (i-211) is a good example of another we don't have ingame, the Yak-3(U) variant is just exciting because its the smallest (so less frontal area and often better speed) and the lightest.

 

It sadly never saw the light of day so far as being a active fighter aircraft but recently became somewhat iconic when a American converted a Yak-11 into a Yak-3U, fitted a allison engine (actually less powerful then ASh-82) and named "Steadfast" broke the world speed record for lightweight aircraft on a 3km course in.  Should be noted this aircraft was specially prepared but still i think it proves the airframe itself was a good one.

 

https://vimeo.com/31183700

 

From previous informal discussions that have been had about the Yak-3U the biggest issue is actually lack of data, one time i remember a RP saying "it would actually be easier to add a Yak-23",  really thought the Yak-3 VK-107 has a similar problem compared to conventional fighters and it not just got into the game but with a good FM so i think its possible. 

 

My biggest concern is since we already have the Yak-3 VK-107 as a premium, i would really like to see this aircraft put on the main-tree.  I'm particularly sure about this because although its not as fast as a Tempest II its acceleration, climb, and still respectable speed should easily make it capable against aircraft like F8F-1Bs and with that in mind it may be the only Soviet prop fighter that could actually fill the spot at 6.3 BR and tier 4. 

Edited by Ottobon
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I support the addition of this aircraft to the russian technological tree right before those wonderful yakovlev jet aircaft.

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Probably Russia's only potential 6.3 aircraft(unless they throw in one of those experimental lavochkin fighters). This plane will pretty much be impossible to energy fight with its great ptw.
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Probably Russia's only potential 6.3 aircraft(unless they throw in one of those experimental lavochkin fighters). This plane will pretty much be impossible to energy fight with its great ptw.

 

Wait, so what BR is La-9 now? I am not able to run the game now and I haven't flown Russian aircraft in a long time, but didn't La-9 use to have BR 6.3?

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Wait, so what BR is La-9 now? I am not able to run the game now and I haven't flown Russian aircraft in a long time, but didn't La-9 use to have BR 6.3?

It's 5.7 now. It might have been 6.3 in the past but it's really not 6.3 good. It could probably be 6.0 but 6.3 is too high.
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