Kay Gyroplanes: 33/1

General data

Producer info

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Names and dates
Market original model designation
33/1
Market model designation (english translation or spelling)
33/1
Project start date
1933
Date of prototype completion
1934
First flight date and time
1935-02-18
Country of manufacture
United Kingdom
Config info
Rotorcraft typeAutogyro
Weights
Maximum Takeoff Weight (MTOW)
417
kg
(...)
386
kg
Manufacturers empty weight (MEW)
283
kg
Cabin and cockpit
Maximum number of people onboard
1
External dimensions
Length
5.46
m
Height
2.34
m
Horizontal stabilizer span
2.29
m
Control system
Lateral control
Main rotor
Longitudinal control
Elevator
Yaw control
Rudder
Main rotor
Cyclic control
Tilting rotor shaft
Collective control
Yes
Main rotor diameter
6.71
m
Main rotor direction of rotation
Clockwise
Max main rotor angular speed in prerotation
400
rpm
Main rotor angular speed
250
rpm
(...)
220
rpm
Number of blades
4
Main rotor blade chord
0.25
m
Propeller
Mode
Pulling
Propeller direction of rotation
Counterclockwise
Propeller pitch mode
Constant pitch
Number of blades
4
Propeller material
Wood
Powerplant
Engine model
Pobjoy R Cataract
Number of engines
1
Total maximum power
75
HP
(...)
80
HP
Performance
Maximum horizontal flight speed (Vh)
156
km/h
Cruise speed (Vc)
137
km/h
Jump take-off availability
Yes
Heigh achieved during jump take-off
6
m
(...)
3
m
0.1148