Пешков-Бойчев: ПБ-2 Сокол
Peshkov-Boychev: PB-2 Sokol

General data

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Names and dates
Market original model designation
ПБ-2
Market model designation (english translation or spelling)
PB-2
Original model name
Сокол
Model name (english translation or spelling)
Sokol
Project start date
1963
Date of prototype completion
1966
Country of manufacture
Bulgaria
People involved
Lyuben Boychev {Любен Бойчев}Constructor
Peter Peshkov {Петър Пешков}Constructor
Config info
Rotorcraft typeAutogyro
Config
Single rotor
Weights
Maximum Takeoff Weight (MTOW)
200
kg
Cabin and cockpit
Maximum number of people onboard
1
External dimensions
Length
3.40
m
Width
1.73
m
Height
1.85
m
Landing gear track
1.55
m
Main landing gear wheel diameter
0.26
m
Main landing gear wheel width
0.11
m
Nose landing gear wheel diameter
0.26
m
Nose landing gear wheel width
0.11
m
Main rotor
Main rotor type
Semi-rigit
Cyclic control
Tilting rotor shaft
Main rotor diameter
6.10
m
Prerotation
Yes
Prerotation type
Mechanical
Number of blades
2
Main rotor blade airfoil
NACA 23012
Propeller
Propeller diameter
1
m
Powerplant
Engine model
M-72
Engine type
Piston
Number of engines
1
Total maximum power
45
HP
Performance
Maximum horizontal flight speed (Vh)
90
km/h
Take-off speed
50
km/h
Landing speed
15
km/h
Maximum service ceiling
1000
m
0.1005