Aces High Bulletin Board
General Forums => Aircraft and Vehicles => Topic started by: Jochen on February 20, 2001, 03:05:00 AM
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So, what does it do and how well?
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jochen Gefechtsverband Kowalewski
Units: I. and II./KG 51, II. and III./KG 76, NSGr 1, NSGr 2, NSGr 20.
Planes: Do 17Z, Ju 87, Ju 88A, He 111H, Ar 234A, Me 410A, Me 262A, Fw 190F, Fw 190G.
Sieg oder bolsevismus!
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This is the one with the 37mm antitank cannon. Imagine our current Yak with a 30 round Ostwind cannon in the nose. (http://bbs.hitechcreations.com/smf/Smileys/default/smile.gif)
Others will post complete performance numbers I'm sure, but here's a link for more info:
http://www.skalman.nu/soviet/ww2-airforce-yak.htm (http://www.skalman.nu/soviet/ww2-airforce-yak.htm)
[This message has been edited by Sancho (edited 02-20-2001).]
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Screw the plane - the cannon is all that matters!
That sucka spits out 735g shells at 900m/s at a rate of 250rpm - capable of 40mm armour penetration! (http://bbs.hitechcreations.com/smf/Smileys/default/biggrin.gif)
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What kind of ammo did the 37mm carry, as the article says only of the anti-tank anti-shipping role, so it maybe aromor piercing ammo. Anyway I hope to never see an ostwind survive a 37mm hit to the turret from this plane. One other thing I read about this awesome cannon was that they couldnt fire more than about 3 shots at a time from the 37mm- as the recoil reduced speed so much and upsert the aiming to make further firing innacurate and dangerous. Looks mean as hell in the screens . (http://bbs.hitechcreations.com/smf/Smileys/default/smile.gif)
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Originally posted by GRUNHERZ:
What kind of ammo did the 37mm carry, as the article says only of the anti-tank anti-shipping role, so it maybe aromor piercing ammo.
The Yak-9T was mainly used for air-to-air fighting so it loaded HE (it wasn't armoured against ground fire so wasn't generally tasked for ground attack). The same NS-37 gun was fitted to some late versions of the Il-2 (two, underwing), when it was loaded with AP.
Tony Williams
Author: "Rapid Fire: The development of automatic cannon, heavy machine guns and their ammunition for armies, navies and air forces"
Details on my military gun and ammunition website: http://www.users.globalnet.co.uk/~autogun/index.htm (http://www.users.globalnet.co.uk/~autogun/index.htm)
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Well it depends....
The Yak-9T is NOT the same as our current Yak-9U with the big gun. That would be the Yak-9UT.
The Yak-9T is the midwar version of the Yak-9 with the big gun, not the much more capable -9UT.
Essentially it will be very slow and underpowered (which the -9U isn't) in comparison to our late war planeset. Think of a P-39 with a better cannon.
Grunherz, the NS-37 was a multipurpose gun and did not fire AP only ammunition. It was commonly used for both ground attack AND air to air attacks (fighters & bombers both). It was an exceptionally deadly gun.
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Vermillion
**MOL**, Men of Leisure
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So, what are the exact performance numbers plz? (http://bbs.hitechcreations.com/smf/Smileys/default/smile.gif)
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Juzz the max speed was around 360mph. Look up the performance stats for the Yak-9D on the internet and it will be very close.
I will post some good numbers when I get home to my books.
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Vermillion
**MOL**, Men of Leisure
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Or you can go here with a calculator and figure them out...
http://hep2.physics.arizona.edu/~savin/ram/yak-9.html (http://hep2.physics.arizona.edu/~savin/ram/yak-9.html)
This is a page on the Yak-9D, and they don't have anything but a few footnotes on variants.
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Flakbait [Delta6]
Delta 6's Flight School (http://www.worldaccessnet.com/~delta6)
Put the P-61B in Aces High
"With all due respect Chaplian, I don't think God wants to hear from me right now.
I'm gonna go out there and remove one of His creations from this universe.
And when I get back I'm gonna drink a bottle of Scotch like it was
Chiggy von Richthofen's blood and celebrate his death."
Col. McQueen, Space: Above and Beyond
(http://www.worldaccessnet.com/~delta6/htbin/delta6.jpg)
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Performance of Yak-9T was just a bit worse due to the weight increase of 140kgs.
Apparently, contrary to the beliefs of some AH fans here, Yak-9T was used for air combat even more frequently than for ground attack missions. The NS-37 didn't have such a negative effect on flight characteristics. A more powerful NS-45 on Yak-9K did. Yak-9K was primarily used against bombers and ground targets.
BTW, since 1944 Yak-9Ts were produced with four fuel tanks just like Yak-9D, sometimes this subvariant of Yak-9T was called Yak-9TD. Of course, it could less than max fuel if a mission required better manueverability instead of longer range.
Here are performance tables from "History of aircraft construction in the USSR" by V.B.Shavrov ("Mashinostroenie" publishing, 3rd, corrected, edition; 1994)
For some parameters I will give corresponding data for regular production Yak-9 in parentheses for comparison.
Yak-9T (mass production):
Engine: VK-105PF, 1180hp
Length: 8.65m
Wingspan: 9.74m
Wing area: 17.15 m^2
Weight: empty - 2298kg
fuel+oil - 330+30kg
payload - 727kg
typical combat take-off - 3025kg (2875)
Specific loadings: wing loading - 176 kg/m^2(167)
power loading - 2.6 kg/hp
(2.4)
Speed: sea level - 533km/h (540)
top - 597km/h at alt of 3930m
(598 at alt of 3800m)
landing - 144km/h (130)
Climb to 5000m time: 5.5 min (4.9)
Ceiling: 10000m (10400)
Range: 890km (1000)
Time for a 360 turn at 1000m: 18-19sec (19)
Take-off run: 380m
Landing run: 500m
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I think we need a P-39 or P-63 for armor hunting. (http://bbs.hitechcreations.com/smf/Smileys/default/biggrin.gif)
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In another source I found a textual description of comparison of Yak-9 to 109G2 (the authors also present "criteria of similarities" analysis in mathematical notation, but I find it difficult to replicate all that in a regular post as it deals with partial differential euqations etc.).
"Aircraft construction in the USSR" by K.Yu. Kosminkov, Academician G.S. Bushghens, Lt Gen A.I. Ayupov, Dr.Tech.Sc. A.M. Batkov, Academician R.A.Belyakov, V.N.Bychkov, Dr.Tech.Sc. R.V.Sakach
(TsAGI publishing department, 1994)
p.106:
"By their horizontal maneuvering capabilities Yak-9, Yak-9D and Yak-9T had a significant advantage over the one cannon version of the Me-109G-2 up to alt of 3.5km and they could get on Me's tail in range of well-aimed fire in 2-3 turns. At the altitudes of 3.5-5.5 km the advantage was gradually decreasing and at the altitudes over 5.5 km the advantage went to the Me-109G-2. In maneuvers of the "combat turn" type (Wisk: essentially it's a chandelle/slanted vert loop) at alts up to 2km these variants of the Yak fighter had a slight advantage because of combination of horizontal and vertical maneuver, they could hold their altitude advantage. In the range of altitudes from 2 to 3.5 km the Yaks and the Me-109G-2 were practically equal in this type of a maneuver, the Me-109G-2 had an advantage above 3.5km. In general, these Yak fighters, using both horizontal and vertical maneuvers, could successfully wage an offensive air combat with the Me-109G-2 up to alt of 5km. The superiority of the Yak-9, Yak-9D and Yak-9T over the three-cannon version of the Me-109G-2 and especially over the FW-190A-4 and A-5 was even more dramatic."
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the NS-37 cannon is totally awesome.
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Originally posted by Jimdandy:
I think we need a P-39 or P-63 for armor hunting. (http://bbs.hitechcreations.com/smf/Smileys/default/biggrin.gif)
You have got to be kidding. The M4 and M10 guns they used could penetrate 25mm, max.
Tony Williams
Author: "Rapid Fire: The development of automatic cannon, heavy machine guns and their ammunition for armies, navies and air forces"
Details on my military gun and ammunition website: http://www.users.globalnet.co.uk/~autogun/index.htm (http://www.users.globalnet.co.uk/~autogun/index.htm)
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I think we need a P-39 or P-63 for armor hunting.
No way Jim, at least not until we have the IL-2, which can do that with more style and survivability.
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Heya Wisk, long time. You through with school now?
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Doug "Pyro" Balmos
HiTech Creations
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Thanks for the numbers Wisk! (http://bbs.hitechcreations.com/smf/Smileys/default/smile.gif)
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Hey Pyro !
Glad you still remember me.
About school - well, after a job in a research lab and just a bit of independent consulting I'm back to get my next degree. BTW, I'm relatively close to your "HQ" - I'm in Austin now.
I play rarely these days - usually flying La5 and picking up on experienced players and provoking duels (in a good natured way, hehe; hope camo, hblair, regurge and grunherz can attest to that (http://bbs.hitechcreations.com/smf/Smileys/default/smile.gif)). I prefer snapshots, scenarios and squad duels though.
And of course arguing about stuff in the forums !
Hope you guys are doing all right
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As it currently works the 37mm will not penetrate the turrent on an ostwind.
Try it with an oswind. You have to hit them low to kill them.
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There's no problem that more firepower can't solve. I think the B-25H-5's 75mm cannon would have no trouble reducing an ostwind to bite sized pieces of chex party mix.
Failing that, you could always just drop a bomb on the ostie dweeb, or use a C-Hog.