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N-I Launch Vehicle

N-I was Japan's first operational launch vehicle for its applications-satellite program. The three-stage launcher used licensed U.S. Thor-Delta technology while building domestic systems experience for experimental, communications, meteorological, ionospheric, and engineering satellites; seven vehicles flew between 1975 and 1982.

Identity

Aliases
N-1N IN-Iロケット
Family Name
N-I
Full Name
N-I Launch Vehicle
Reusability
expendable
Slug
n-i-launch-vehicle
Status
retired
Type
rocket

Details

Description
N-I was Japan's first operational launch vehicle for its applications-satellite program. The three-stage launcher used licensed U.S. Thor-Delta technology while building domestic systems experience for experimental, communications, meteorological, ionospheric, and engineering satellites; seven vehicles flew between 1975 and 1982.
Diameter M
2.44
First Flight Year
1,975
Height M
32.57
Last Flight Year
1,982
Liftoff Mass Kg
90,400
Manufacturer Id
jd78f0qx6y0pykq0j05qvmz7qn7kpnbp
Stages Count
3

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Creation Time
7/13/2026, 12:11:05 PM
Updated Time
7/13/2026, 12:11:05 PM