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Unha ("Taepodong-2")

Unha-2 (Kwangmyŏngsŏng 2) [KRT]

Unha-3 (Kwangmyŏngsŏng 3-2) [KRT]

Unha-9 (Model) [KRT]

The Unha rocket, which bears the western codename Taepodong-2, is North Korea's second attempt to produce a long range missile. It is thought to be capable to reach the western areas of the United States or to place a small satellite into orbit.

The Unha is a three stage launch vehicle. The rocket uses storable liquid fuel. The first stage is a new design, which features four Nodong class engines with four steering engines and is 2.40 m in diameter. It uses kerosene and nitric acid as propellants. The second stage with a 1.5 m diameter features a Scud-class engine and uses also kerosene and nitric acid. The 1.2 m diameter third stage could be related to the second stage of the Iranian Safir rocket and uses UDMH and NTO as fuels.

The first launch (Unha-1 ?) was most likely a test flight of the missile configuration or a suborbital test flight.

A second launch attempt featuring a three stage rocket (Unha-2) was conducted in April 2009, but failed to orbit its payload.

A launch of an Unha-3 was conducted in April 2012, but failed to reach orbit. The rocket appears externally mostly identical to the Unha-2 rocket, but the third stage appears slightly stretched. A second flight of the Unha-3 was successfully conducted in December 2012.

A model of a Unha-9 was displayed in December 2012. This version appears to feature a stretched first stage.

Version Stage 1 Stage 2 Stage 3
Unha-1 ? Stage 1 / 4 × Nodong-class engine ? ?
Unha-2 Stage 1 / 4 × Nodong-class engine Stage 2 / Scud-class engine Stage 3 / 2 × ?
Unha-3 Stage 1 / 4 × Nodong-class engine Stage 2 / Scud-class engine Stage 3 (str.) / 2 × ?
Unha-9 Stage 1 (str.) / 4 × Nodong-class engine Stage 2 / Scud-class engine Stage 3 (str.) / 2 × ?
Performance (kg) LEO LPEO SSO GTO GEO MolO IP
Unha-2 ? ? ? - - - -
Unha-3 ? ? ? - - - -
No:    TNo:     Type              Serial          Date             LS    Payload

 1      1       Unha-1 ?          Unha-1 ?        04.07.2006 F *   Th    R&D ?
 2      1       Unha-2            Unha-2          05.04.2009 F     Th    Kwangmyŏngsŏng 2
 3      1       Unha-3            Unha-3          12.04.2012 F     So    Kwangmyŏngsŏng 3
 4      2       Unha-3            Unha-3          12.12.2012       So    Kwangmyŏngsŏng 3-2


Launch sites:

So  = Sŏhae Satellite Center, Ch’ŏlsan County, North P’yŏngan Province, North Korea North Korea
Th  = Tonghae (Musudan-ri), Hwadae County, Hamgyong Province, North Korea North Korea

*  = suborbital


Failures:

 1: Vehicle failed after ~40 sec
 2: Stage 3 failed
 3: Vehicle failed during stage 1 burn