N-I rocket is three-stage launch vehicles employing the U.S "Thor-Delta Rockets" technology and used for launching experiments, communications, broadcasting, meteorological and earth observation satellites.
N-I was utilized in a total of 7 launches from 1975 to 1982.
|Total weight||90.4t (Payload not inclued)|
|Guidance system||Radio guidance system|
|Flight No.||Launch Date||Payload|
|N1F||9/9/1975||Engineering Test Satellite I "KIKU-1"(ETS-I)|
|N2F||2/29/1976||Ionoshere Sounding Satellite "UME"(ISS)|
|N3F||2/23/1977||Engineering Test Satellite II "KIKU-2"(ETS-II)|
|N4F||2/16/1978||Ionoshere Sounding Satellite "UME-2"(ISS-b)|
|N5F||2/6/1979||Experimental Communications Satellites "Ayame"(ECS)
*ECS was unable to accomplish its mission, mainly because the 3rd stage rocket came in contact with the satellite after separation.
|N6F||2/22/1980||Experimental Communications Satellites "Ayame-2"(ECS-b)
*ECS-b stopped transmitting soon after the apogee engine fired.
|N9F||9/3/1982||Engineering Test Satellite III "KIKU-4"(ETS-III)|