Unha

Unha
Unha-3 at launch pad in April 2012
FunctionExpendable carrier rocket
ManufacturerNational Aerospace Development Administration
Country of originNorth Korea
Size
Height28–30 metres (92–98 ft)[1]
Diameter2.4 metres (7 ft 10 in)
Mass86,750–91,000 kilograms (191,250–200,620 lb)
Stages3
Capacity
Payload to LEO
Mass200 kg (440 lb)[2] (465 x 502 km)
Launch history
StatusActive
Launch sitesSohae, Tonghae
Total launches4
Success(es)2
Failure(s)2
First flight5 April 2009[3]
First stage
Height15 m (49 ft)
Diameter2.4 m (7 ft 10 in)
Powered by4 Nodong 2-1[4][1]
Maximum thrust1192.8 kN[4][1]
Specific impulse252 sec[5][1]
Burn time120 seconds[5][1]
PropellantN2O4/UDMH[4][1]
Second stage
Height8.8–9.3 m (29–31 ft)
Diameter1.5 m (4 ft 11 in)
Powered by4 verniers[4]
Maximum thrust125 kN[1]
Specific impulse255 s[5]
Burn time220 seconds[5][1]
PropellantN2O4/UDMH[4][1]
Third stage
Height3.7–5.7 m (12–19 ft)
Diameter1.2–1.25 m (3 ft 11 in – 4 ft 1 in)
Powered by2 verniers[4][1]
Maximum thrust35.4 kN[1]
Specific impulse230 sec[5]
Burn time245 seconds[5]
PropellantN2O4/UDMH[4]

The Unha or Eunha (Korean: 은하, 銀河, "Galaxy")[6] is a North Korean expendable carrier rocket, which partially utilizes the same delivery system as the Taepodong-2 orbital launch system.[7]

  1. ^ a b c d e f g h i j k Brugge, Norbert. "Unha-3". Space Rockets Rest Of World. Retrieved 30 December 2017.
  2. ^ "Status of North Korean Satellite unknown after prolonged Radio Silence, Reports of Tumbling – Spaceflight101". 12 February 2016. Archived from the original on 12 November 2019. Retrieved 30 December 2017.
  3. ^ Krebs, Gunter. "Unha ("Taepodong-2")". Gunter's Space Page. Retrieved 19 April 2012.
  4. ^ a b c d e f g Cite error: The named reference ucs-20130222 was invoked but never defined (see the help page).
  5. ^ a b c d e f David Wright (March 20, 2009). "An Analysis of North Korea's Unha-2 Launch Vehicle" (PDF). Union of Concerned Scientists. Archived from the original (PDF) on September 3, 2014. Retrieved January 23, 2013.
  6. ^ Kim, Jack (2009-03-13). "FACTBOX: North Korea's Taepodong-2 long-range missile". Reuters. Retrieved 2009-03-30.
  7. ^ "North Korea positions rocket for April liftoff". AP. 2009-03-27. Archived from the original on 2009-03-29. Retrieved 2009-03-28.