KB, would there be any significant performance difference between the Series 69, Series 99 and Series 136 aircraft?
Approximately same as between 109F-2, 109F-4Z and 109G-6
tested in Scientific Research Institute Air Force
Series 69 (SN1569, may 42), Series 98 (SN2898, oct 42), Series 96 (SN4596, oct 42), Series 99 (SN1699, oct 42), Series 136 (SN08136, apr 43)
time of a set of 5000 m, min 6.4 5.8 4.7 5.2 5.4
speed at a sea level, km/h 510 516 526 524 530
speed at 3500 m, km/h 571 569 592 584 600
flight weight, kg 2917 2940 2780 2920 2875
weapons 2xShKAS+1xShVAK 2xShKAS+1xShVAK 1xShVAK 1xUBS(200)+1xShVAK(120) 1xUBS(220)+1xShVAK(135)
Series 99 first "Yak-1B" - new arms, without razorback
Series 136 - all improvements of aerodynamics are introduced, it is considered that it is completely made from 111 series (in a plant No. 292 series usually 50 planes)
P.S.
Series 11 (SN0511, may 41), Series 29 (SN2029, aug 41), Series 55 (SN3855, feb 42),
time of a set of 5000 m, min 5.7 6.8 5.9
speed at a sea level, km/h 490 487 -
speed at 3100 m, 577 546 518
speed at 5000 m, km/h 587 560 550
flight weight, kg 2847 2951 2985
engine M-105P M-105P M-105PA