CКБ РКИИГА: Рига-50
SKB RKIIGA: Riga-50

General data

Producer info

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Names and dates
Market original model designation
Рига-50
Market model designation (english translation or spelling)
Riga-50
Project start date
1966
Date of prototype completion
1967-09
First flight date and time
1968-08-26
Country of manufacture
Latvia
People involved
Alexander Satarov {Александр Сатаров}Consultant
Valentin Ustinov {Валентин Устинов}Project leader
Donat Osokin {Донат Осокин}Project supervisor, Test pilot
Vladimir Kapustin {Владимир Капустин,}Function unknown
Victor Saveliev {Виктор Савельев}Function unknown
Oleg Garbarenko {Олег Гарбаренко}Function unknown
Evgeny Makhotkin {Евгений Махоткин}Function unknown
Yuri Dunaev {Юрий Дунаев}Function unknown
V. Zhuk {В. Жук}Function unknown
Config info
Rotorcraft typeAutogyro
Weights
Maximum Takeoff Weight (MTOW)
225
kg
Manufacturers empty weight (MEW)
140
kg
Cabin and cockpit
Maximum number of people onboard
1
External dimensions
Length
3.40
m
Width
1.40
m
Height
1.90
m
Main landing gear wheel diameter
0.26
m
Main landing gear wheel width
0.11
m
Nose landing gear wheel diameter
0.20
m
Nose landing gear wheel width
0.08
m
Main rotor
Cyclic control
Tilting rotor shaft
Main rotor diameter
6.10
m
Main rotor direction of rotation
Counterclockwise
Main rotor angular speed
450
rpm
Number of blades
2
Main rotor blade chord
0.18
m
Main rotor blade airfoil
NACA 23012
Propeller
Propeller diameter
1.20
m
Number of blades
2
Propeller material
Wood
Transmission reduction ratio
1.65
Powerplant
Engine model
М-61 Урал
Engine model (english translation or spelling)
M-61 Ural
Engine type
Piston
Number of engines
1
Total maximum power
45
HP
Fuel system
Fuel tank capacity
14
l
Performance
Maximum horizontal flight speed (Vh)
150
km/h
Normal operation speed
115
km/h
Cruise speed (Vc)
75
km/h
Minimum speed
51
km/h
Landing speed
15
km/h
Maximum service ceiling
2400
m
Maximum range
200
km
Maximum flight endurance
2
h
0.0714