Capital: Hoppi-Copter

General data

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Names and dates
Market original model designation
Hoppi-Copter
Market model designation (english translation or spelling)
Hoppi-Copter
Also known as
Capital C-1 Firefly
Also known as (english translation or spelling)
Capital C-1 Firefly
Country of manufacture
USA
People involved
Horace PentecostChief design engineer
Config info
Rotorcraft typeHelicopter
Config
Single rotor
Way of counteracting main rotor torque
Counteracting torque not required
Weights
Maximum Takeoff Weight (MTOW)
204
kg
Manufacturers empty weight (MEW)
59
kg
Cabin and cockpit
Maximum number of people onboard
1
External dimensions
Landing gear type
Wheeled
Wheeled landing gear type
Main wheels in the back
Landing gear support points
3
Tail landing gear shock absorption type
Rubber cords
Nose landing gear shock absorption type
Rubber cords
Control system
Yaw control
Rudder
Main rotor
Main rotor equipped with stabilizing bar
Yes
Drive type
Tip jets
Main rotor diameter
5.49
m
Main rotor direction of rotation
Counterclockwise
Main rotor angular speed
500
rpm
Number of blades
2
Powerplant
Engine type
Pulse-jet
Number of engines
2
Static thrust of a single engine
102
N
Performance
Cruise speed (Vc)
97
km/h
Maximum flight endurance
1.50
h
0.0379