ZUYAK

[BONNIE MAD]

1987 YAK 52


Performance

Maximum level airspeed 164 Kts
Range (10% reserve at 105 Kts) 280 NM
Stall speed, engine at idle,
Erect flight 60 Kts
Inverted flight 76 Kts
Flaps extended 55 Kts
Takeoff run (Standard Atmos.) 585 ft
Landing run " " 975 ft


Limitations

Never exceed speed VNE 230 Kts
Maximun airspeed at max Gs (+7/-5 G) 197 Kts
G limits +7/-5
Maximum gear extended speed (VLE) 110 Kts
Minimum speed Erect flight 71 Kts
Inverted flight 93 Kts
Maximum inverted flight time 2 mins

NOTE:

Allow three minutes of normal errect flight after each two
minutes of inverted flight to allow the oil to cool.

Ceiling 13000 ft
Minimum fuel qty for aerobatic flight 20 litres


Engine Data

Vendeneyev M14P Engine:

Cooling system air/fuel
Number of cylinders 9
Propeller reduction ratio 0.658
Compression ratio 10.6:1
Fuel type 91/155
Octane number >91
Carburetor type Pressure
Dry weight 471 lbs

Engine Limitations

Maximum time at max power:

Takeoff 5 mins
At max rpm 1 min
All other times No limit
Inverted flight 2 mins
Maximum allowable rpm 2950 (101%)
Minimum allowable rpm 700 (24%)
Time from idle to max rpm < 2 secs



Power settings


Rating HP RPM % Fuel Consumption Blower Outlet Pressure (mmHg)
Take Off 360 2900 99% 285-315 grams/HP/hour 125 - 15 (surplus)
Nominal I 290 2400 82% 280-310 95 -15 (surplus)
Nominal 2 240 2050 70% 265-300 75 -15 (surplus)
Cruise 1 .75 of N2 1860 64% 210-230 735 mmHg +/-15 (absolute)
Cruise 2 .6 of N2 1730 59% 215-235 670 mmHg +/-15 (absolute)

Aerodynamic data

Engine torque 1215 ft lbs
Best climb angle (at 80 kts) 12 degrees
Glide angle (Gear & Flaps Up) 7:1 at 93 Kts
Engine/prop static thrust 1212 lbs
Roll rate 140 deg/sec


Aerobatics

The Yak 52 is permitted to perform all the maneuvers listed in the Aresti / FAI catalog with the exception of ( ?? tail slides. ??)

[Lood]

Lekka Alisdair - wys bietjie pics van die panel ook. Wonder of die Yak dit eendag sal maak Colesberg toe Die Bonnie sukkel maar...

[BONNIE MAD]

Die Yak het net twee uur endurance teen 115kts so ek sal planne moet maak met brandstof.Se net dan kom ons.