東京機械工業: よみうり Ｙ-１
Tokyo Kikai Kogyo: Yamiuri Y-1

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Names and dates
Market original model designation
よみうり Ｙ-１
Market model designation (english translation or spelling)
Yamiuri Y-1
Also known as
よみうり1型
(...)
読売Ｙ-１
Also known as (english translation or spelling)
Yomiuri Type 1
(...)
Yamiuri Y-1
Project start date
1952-05
Date of prototype completion
1954-10
Tests start date
1954-11
Project end date
1957-03
Country of manufacture
Japan
Config info
Rotorcraft typeHelicopter
Weights
Maximum Takeoff Weight (MTOW)
748
kg
(...)
800
kg
Manufacturers empty weight (MEW)
529
kg
(...)
500
kg
Cabin and cockpit
Maximum number of people onboard
2
Cockpit seating arrangement
Side-by-side
Cabin type
Enclosed
External dimensions
Total length (rotors turning)
12.34
m
(...)
12.20
m
Overal height
3.60
m
Landing gear type
Skids
Main rotor
Main rotor type
Fully articulated
Main rotor diameter
10
m
Main rotor direction of rotation
Counterclockwise
Number of blades
2
Tail rotor
Tail rotor type
Classic tail rotor
Tail rotor diameter
1.80
m
Tail rotor direction of rotation
Clockwise
Number of blades
2
Powerplant
Engine model
瓦斯電 神風3型
(...)
神風
Hitachi Jinpu III
Engine model (english translation or spelling)
Gasden Kamikaze Type 3
(...)
Kamikaze
Hitachi Jinpu III
Engine type
Piston
Number of engines
1
Total maximum power
130
HP
(...)
150
HP
Performance
Maximum horizontal flight speed (Vh)
156
km/h
Cruise speed (Vc)
130
km/h
Maximum service ceiling
1500
m
Maximum range
322
km
(...)
420
km
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