I have to agree with the IL-10 as their best light attack A/C. It was used for many years after WW2. For about the last 30yrs. I would have agreed with most that the Yak-3 was the hands down best VVS fighter of the war. BUT in the few years of reading the posts on this sight and trying with my little brain to soak in all wisdom of those postings here, I'm not so sure the Yak-3 was their cure all fighter. So.... I started surfing the web, reading books and combed through my files. In 1945 the VVS had four very, very good fighters in their inventory. I'm staying neutral at this time until I've absorbed more information. What I've come up with to date proved very interesting: Height (meters), Speed (mph) and Climb (fpm):
Height....Yak-3........La-7.........P-63.........Yak-9U
..S.L.....352/4450...383/4762...371/4410...361/4,200
.1,000...367/4280...397/4762...384/4275
.2,000...380/3790...411/3936...394/4150
.3,000...382/3655...408/3660...405/3950
.4,000...398/3385...401/2952...410/3575
.5,000...394/2830...405/2952...416/3200...422
.6,000...385/2155...418/2499...421/2850
.7,000...375/..?......414/2007...425/2450
.8,000...363/..?......405/1496...417/1900
.9,000.....?./..?........?../.984...402/1350
10,000....?./..?........?../.472....379/.650
11,000.....N.A..........?../.98.4....?../.290
Weight...5,864 lbs...8,800 lbs...7,144 lbs...7.040 lbs.
Wing area..159.8.......189..........248..........185---sq.ft.
Power load..4.44........3.86.........4.89.........4.27--lbs./HP
Wing load..36.70.......37.80........35.48.......38.05--lbs./sq.ft.
Yak-3: Without a doubt the most maneuverable on the horizontal plane at low and medium altitudes. Excellent handling qualities. Lightest constructed. Figures from the Russian graph floating around this sight and Erik Pilawskii's book Soviet Air Force Fighter Colours 1941-1945.
La-7: From Erik's Book, "Handling and control harmony were superlative, its rate of roll equalled that of the Fw-190, and its turning circle second to no enemy fighter. The loss rate for the Lavochkin was half that of the Yak-3. A mere 115 La-7s were lost to all military causes (less than half of these in earial combat), while at the same time unquestionably accounting for more than 3,100 aerial victories." Figures from Production Test Trial of No. 452132-76 held in April 1945.
P-63: I have read several different places that this bird had all the maneuverability of the P-39 with much better handling qualities. Unfortunately I haven't found an excellent book that elaborates on all its great qualities yet. Figures from Fighter Comparison Chart on Mike Williams' excellent sight
www.wwiiaircraftperformance.org.
Yak-9U: Figures are from Erik Pilawskii's book. I have seen the Russian chart floating around this sight. The graph must be of the initial production A/C Yak-9U that suffered from engine cooling difficulties of every description and could not attain the performance figures of the standard production A/C of1945.
One other note: The VVS considered the P-63 as being a very rugged fighter by comparison to the rest.
Operating range of the P-63 was over twice that of the other fighters listed at 2,575 mls (Ray Wagner).