[Vasya]

Для Р-63 получилось так:

[Aircraft]
  Type 1
  Crew 1
  Wingspan 11.684
  Length 9.957
  Seaplane 0
  Canard 0
  Jet 0
  JetHiV 0
[Mass]
  Empty 2825.0
  TakeOff 4102.0
  Oil 42.0
  Fuel 490.0    // 272.0
//  Nitro 50.0
[Controls]
  CAileron 1
  CAileronTrim 1
  CElevator 1
  CElevatorTrim 1
  CRudder 1
  CRudderTrim 1
  CFlap 1
  CFlapPos 3
  CDiveBrake 0
  CInterceptor 0
  CEngine 1
  CVectoredThrust 0
  CUndercarriage 1
  CLockTailwheel 0
  CDifferentialBrakes 1
  CStabilizer 1
  CArrestorHook 0
  CWingFold 0
  CCockpitDoor 0
  
  CAileronThreshold 430.0
  CRudderThreshold 400.0
  CElevatorThreshold 400.0
  DefaultAileronTrim 0.007
  DefaultElevatorTrim 0.0245
  DefaultRudderTrim 0.056
[Squares]
  Wing 23.04
  Aileron 0.765
  Flap 1.2
  Stabilizer 2.98
  Elevator 1.24
  Keel 1.28
  Rudder 0.95
  Wing_In 4.34
  Wing_Mid 3.83
  Wing_Out 3.35
  FuselageCxS 0.0
  AirbrakeCxS 0.0
[Arm]
  Aileron 3.7
  Flap 0.47
  Stabilizer 4.13
  Keel 4.27
  Elevator 4.33
  Rudder 4.33
  Wing_In 0.73
  Wing_Mid 2.2
  Wing_Out 3.93
  Wing_V 3.4
  GCenter 0.02
  GCenterZ 0.00
  GC_AOA_Shift 0.56872552      //  22-29.1
  GC_Flaps_Shift 0.10
  GC_Gear_Shift 0.00
[Toughness]
  AroneL 50
  AroneR 50
  CF 300
  Engine1 80
  Engine2 80
  Engine3 80
  Engine4 80
  GearL2 200
  GearR2 200
  Keel1 80
  Keel2 80
  Nose 80
  Oil 50
  Rudder1 50
  Rudder2 50
  StabL 50
  StabR 50
  Tail1 100
  Tail2 100
  Turret1B 50
  Turret2B 50
  Turret3B 50
  Turret4B 50
  Turret5B 50
  Turret6B 50
  VatorL 50
  VatorR 50
  WingLIn 100
  WingLMid 80
  WingLOut 80
  WingRIn 100
  WingRMid 80
  WingROut 80
  Flap01 50
  Flap02 50
  Flap03 50
  Flap04 50
[Engine]
  Engine0Family ALLISON(NEW):P-63C_NEW
  Engine0SubModel V-1710-93/RIGHT/NEW/P-63
[Gear]
  H 1.8
  Pitch 1.7
  SinkFactor 1000.0
  SpringsStiffness 0.3
[Params]
  CriticalAOA 16.00
  CriticalCy 01.43
  CxCurvature 00.90
  CxStraightness 00.10
  CriticalAOAFlap 16.00
  CriticalCyFlap 01.70
  SpinTailAlpha 17.00
  SpinCxLoss 0.06
  SpinCyLoss 0.03
  Vyfac 1.0
  Tfac 1.03
  Vmin 160.0
  Vmax 514.0
  VmaxAllowed 870.0
  VmaxH 657.0
  HofVmax 7450.0
  VminFLAPS 125.0
  VmaxFLAPS 248.0
  Vz_climb 13.0
  V_climb 270.0
  T_turn 19.0
  V_turn 310.0
  K_max 17.0
  Cy0_max 0.13
  FlapsMult 1.0
  FlapsAngSh 10.0
  G_class_coeff 21.5
  G_class 12.0
  ReferenceWeight -5.0
  Range 1620.0
  CruiseSpeed 310.0
  SensYaw 0.41
  SensPitch 0.64
  SensRoll 0.27
[Polares]
  lineCyCoeff 0.0875
  AOAMinCx_Shift 1.75
  Cy0_0 0.13
  AOACritH_0 18.0
  AOACritL_0 -18.0
  CyCritH_0 1.31
  CyCritL_0 -0.916              
  CxMin_0 0.0162               //  0.0177
  parabCxCoeff_0 4.0E-4
  Cy0_1 0.58                   
  AOACritH_1 17.0
  AOACritL_1 -22.6232
  CyCritH_1 1.454
  CyCritL_1 -0.8131                      
  CxMin_1 0.0596  // 0.0404
  parabCxCoeff_1 4.7E-4
  parabAngle 4.0
  Decline 0.012
  maxDistAng 40.0
  draw_graphs 0
  mc3 -10.343,1116.4,151.15,41.581,147.16,465.57,322.9,-10.096
  mc4 26.443,-24897,-1072,-108.83,-1569.5,-7211.7,-4070.8,28.149
  mm 0.724,0.725,0.754,0.77,0.754,0.727,0.703,0.695
  mz 0.277,0.025,0.034,0.048,0.051,0.037,0.04,0.264
[SOUND]
  Engine p39
  Start e_start
  Rear 1

Скорость у земли при открытом радиаторе на номинале 514 км. в час.
Получилась точная скорость из советский испытаний.