posted 01-31- 01:47 AM               

-fuel tank capacity
-ammo capacity and fire rate for the cannon and machine guns

TS

posted 01-31- 02:14 AM               

Here is some info I collected some time ago.
__________________________________________
Armament: One 20mm ShVAK cannon
and two 12.7mm BS machine guns.
The early versions only had the 20mm and 1 12.7mm gun.

Rate of fire:

The Shvak cannon mounted in the prop cylinder carried
120 rounds, while the Berezin MG's carried 250 rounds.
The ROF for both was 13 rps. With a total muzzle load of 703 kw.(not sure what this is for)

Bomb: One 227 kg (500 lb)
and two 45 kg (100 lb) bombs

Note that I have also seen stats listing it as having
six .50 calibre machine guns. But I cant confirm this.
_______________________________________

I gatherd this when Raider and I were trying to get some Soviet stuff going. I got this from a friends book, but cant remember the name off hand.

The best I could do for fuel tank capacity is give the range of the plane. It was 815km (506 miles). Maybe you can compare this to an exsisting plane and make a educated guess

Hope that helps,

------------------
Zoycite {GS}
GUNSLINGERS

visit The War Paint Factory

posted 01-31- 03:27 AM               

"...The Yak-3 had three fuel tanks with a total capacity of 595lb (270kg); two in the outer wing panels and a feeder tank in the in the wing centre section...Armament, instrumentation and armour were nearly the same as those of the Yak-1 with improved pilot view, armour and armament...fuel tank compartments were seperated from the cockpit by hermetically sealed partitions...the ShVAK cannon gave way to the ShA-20M (initial production Yak-3s had exactly the same armament as the Yak-1, as production of the ShA-20M cannon had not yet begun) experimental cannon designed by Boris Shpitalny, and a pair of 12.7mm...operational range 528 miles (1943) / 658 miles (1944)...turn time 18-19 seconds..."

from

"Soviet Combat Aircraft of the Second World War"
Volume One: Single-Enginde Fighters
Yefim Gordon and Dmitri Khazanov
Midland Publishing (midlandbooks@compuserve.com - ?not tested yet?)
ISBN 1 85780 083 4

also take a look to the russian aviation museum (for more information on the rpg and such things ...) !

Do you need more (tell me what type you want do to !)

posted 01-31- 03:36 AM               

http://hep2.physics.arizona.edu/~savin/ram/gun-shvak20.html

posted 01-31- 02:15 PM               

I managed to get the Yak-3 manual sort of translated:
http://firelight.dynip.com/PlaneStats/Yak3Stats/yak3manual.htm

Laika I may do both the SHVak and the 20mm versions as different loadouts for the Yak3. Do you know how many planes were built in each configuration?

Does your book have any more technical information on the Yak 3 like control surface travel, center of gravity, performance information? How was the turn rate measured? 18-19 seconds sounds quite slow compared to other planes and the yak was a famous turn-fighter.

TS

posted 02-01- 12:17 AM               

------------------
Zoycite {GS}
GUNSLINGERS

visit The War Paint Factory

posted 02-01- 05:58 AM               

Check you mail Tailslide !

posted 02-01- 12:46 PM               

There is also a ShVAK 12.7mm machinegun, so it's not clear if you just say "ShVAK"

TS

posted 02-01- 01:29 PM               

They wrote something about this ShA-20M cannon - it is nothing about it at the Russian Aviation Museum website (maybe you could mail them and ask ?)

BTW - I dont mind! ShVAK or ShA-20 who cares ? Both are historical correct (as you can read).

posted 02-01- 01:42 PM               

Here's a blurb from Laika's book about the Yak3. With fuel never being a problem in SDOE this could make things interesting.

360' turn at low altitude in only 16 to 17 seconds

During the service tests 431 missions were flown, including interception, on-call missions, missions for building up forces, and freelance operations. Twenty Luftwaffe fighters and three Junkers Ju87 bombers were shot down in air combats, while Soviet losses numbered two Yak-3s shot down, plus three that were damaged by German anti-aircraft defence but managed to reach Soviet-held territory.
Operations showed that the innovative Soviet fighter could catch its German counterparts in horizontal flight as well as in climbing and diving manoeuvres. The Yak3 gained a substantial advantage over the Fw190A within two nose-to-tail turns, and over the Bf109G within three turns.
A large dogfight occurred on 16th June 1944. Both sides built up their forces, with the result that 18 Yak-3s opposed 24 German fighters, and 15 Luftwaffe aircraft were shot down for the cost of one Soviet fighter destroyed and one damaged. Next day, Luftwaffe activity over that section of the front had virtually ceased. Service tests indicated that the Yak-3 appeared to be most suitable for air defence missions. Its use for close support of ground troops, bomber escort and so on was less worthwhile owing to its limited supply of fuel, average mission duration being limited about 40 minutes. The tests also revealed certain short-comings of the initial production Yak-3.

posted 02-01- 01:53 PM               

Weight: 92.6lb (42kg)
RPM: 800
Muzzle Velocity: same as the Hispano

(ShA-20M : Shpitalny-Aviatsionnaya-(20mm)-Modifitsirovanny ?)

The Berezin 12.7mm is called UBS (synchronized) UBK (wing mounted) or UBT (bomber turrets) the U stands for Uluchshenny/Improved

Weight: 47lb (21.4kg)
Projectile Weight: 1.7 ounces (48g)
Rounds Per Minute: 1050
Muzzle Velocity: 2,789ft/sec (850m/sec)

same callibre as the "50-calibre" Browning

did you need more on this ?