N-I Vehicle Overview
A complete overview of the N-I launch vehicle, including launch stats, vehicle info and launch locations.
Basic Info
Name
N-I
Manufacturer
First Launch
9 Sep 1975
Successful Launches
6
Failed Launches
1
Rocket Info
Status
Inactive
Stages
2-3
Length
34 m
Diameter
2.44 m
Launch Mass
131 tons
Reusability
Not Reusable
Payload Info
LEO Capacity
1,200 kg
GTO Capacity
360 kg
The N-I or N-1 was a derivative of the American Thor-Delta rocket, produced under licence in Japan. It used a Thor-ELT first stage, a Mitsubishi Heavy Industries-designed LE-3 engine was used as a second stage, and three Castor SRMs. Seven were launched between 1975 and 1982, before it was replaced by the N-II.
Launch Sites used by N-I
Tanegashima Space Center
Japan's largest rocket-launch complex, featuring cutting-edge facilities and a comprehensive space museum.