GEN: H-4

General data

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Names and dates
Market original model designation
H-4
Market model designation (english translation or spelling)
H-4
First flight date and time
1998
Country of manufacture
Japan
Config info
Rotorcraft typeHelicopter
Config
Coaxial rotors
Weights
Maximum Takeoff Weight (MTOW)
200
kg
(...)
180
kg
Manufacturers empty weight (MEW)
75
kg
Cabin and cockpit
Maximum number of people onboard
1
External dimensions
Height
2.40
m
Control system
Lateral control
CG movement
Longitudinal control
CG movement
Yaw control
Main rotors differential torque
Main rotor
Cyclic control
None
Collective control
No
Main rotor diameter
4
m
Main rotor direction of rotation (System no.: 1)
Clockwise
Main rotor direction of rotation (System no.: 2)
Counterclockwise
Main rotor angular speed
860
rpm
Pre-coning angle
4.80
°
Main rotor blade twist
6.30
°
Powerplant
Engine model
GEN 125
Engine type
Piston
Number of engines
4
Total maximum power
40
HP
Fuel system
Fuel tank capacity
19
l
Performance
Never exceed speed (Vne)
90
km/h
Maximum horizontal flight speed (Vh)
40
km/h
Cruise speed (Vc)
50
km/h
Maximum service ceiling
1500
m
Maximum flight endurance
1
h
0.0295