[go: up one dir, main page]

Jump to content

Dnepr (rocket)

From Wikipedia, the free encyclopedia

This is an old revision of this page, as edited by WDGraham (talk | contribs) at 19:50, 29 July 2009 (update for today's launch, infobox format). The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.

Template:Launching/Dnepr

Dnepr (Dnipro/Konversiya)
FunctionOrbital carrier rocket
ManufacturerYuzhny Machine-Building Plant
Country of originSoviet Union (Ukraine)
Size
Height34.3 metres (113 ft)
Diameter3 metres (9.8 ft)
Mass211,000 kilograms (465,000 lb)
Stages3 (4 or 5 with SpaceTug upper stages)
Capacity
Payload to LEO
Mass4,500 kilograms (9,900 lb)
Payload to the ISS
Mass3,200 kilograms (7,100 lb)
Payload to TLI
Mass550 kilograms (1,210 lb) (with ST-1)
Associated rockets
Based on
  • R-36M
Launch history
StatusActive
Launch sitesLC-109, Baikonur
Yasny
Total launches13
Success(es)12
Failure(s)1
First flight21 April 1999
Powered by1 RD-264
Maximum thrust4,520 kilonewtons (1,020,000 lbf)
Specific impulse318 s
Burn time130 seconds
PropellantN2O4/UDMH
Powered by1 RD-0255
Maximum thrust755 kilonewtons (170,000 lbf)
Specific impulse340 sec
Burn time190 seconds
PropellantN2O4/UDMH
Powered by1 RD-869
Maximum thrust18.6 kilonewtons (4,200 lbf)
Specific impulse317 sec
Burn time1,000 seconds
PropellantN2O4/UDMH
SpaceTug 1
Powered by1 Solid
PropellantSolid
SpaceTug 3
Powered by1 Liquid
PropellantN2O4/UDMH

The Dnepr rocket ([Дніпро, Dnipro] Error: {{Lang-xx}}: text has italic markup (help); [Днепр, Dnepr] Error: {{Lang-xx}}: text has italic markup (help)) is a space launch vehicle named after the Dnieper River. It is a converted ICBM used for launching artificial satellites into orbit, operated by launch service provider ISC Kosmotras. The first launch, on April 21, 1999, successfully placed UoSAT-12, a 350 kg demonstration mini-satellite, into a 650 km circular LEO.[1][2]

Converted missile

The Dnepr is based on the R-36MUTTH ICBM– called the SS-18 Satan by NATO– designed by the Yuzhnoe Design Bureau in Dnipropetrovsk, Ukraine. The Dnepr is three-stage rocket using storable hypergolic liquid propellants. The launch vehicles used for satellite launches are withdrawn from service with the Russian Strategic Rocket Forces and stored for commercial use. A group of 150 ICBMs can be converted for use and are available until 2020. The Dnepr can be launched from Baikonur in Kazakhstan and a newly created Cosmodrome at the Dombarovsky launch base, near Yasny, in the Orenburg region of Russia.

Performance

The Dnepr launch vehicle has only a small number of modifications compared to the R-36M ICBM in service. The main difference is the payload adapter located in the space head module and modified flight-control unit. This baseline version can lift 3,600 kg into a 300 km low earth orbit at an inclination of 50.6°, or 2,300 kg to a 300 km sun-synchronous orbit at an inclination of 98.0°. On a typical mission the Dnepr deploys a larger main payload and a secondary payload of Miniaturized satellites and CubeSats. A number of Space Tugs are under development which will be placed inside the space head module, thereby sacrificing volume and payload but enabling orbits requiring more energy, including planetary escape orbits.

Launch history

Before the Dnepr entered commercial service it was in service with the Strategic Rocket Forces which launched the ICBM version over 160 times with a reliability of 97%. The rocket has been used twelve times for commercial purposes with a single failure.

Flight Date Payload Orbit Site
1 April 21, 1999 UoSAT-12 650 km circular LEO at 65˚ inclination Baikonur
2 September 26, 2000 MegSat-1 (Italy)/UniSat (Italy)/TiungSat-1 (Malaysia)/ SaudiSat-1A & SaudiSat 1B (Saudi Arabia) 650 km circular LEO at 65˚ inclination Baikonur
3 December 20, 2002 LatinSat 1 & LatinSat 2 (Argentina)/SaudiSat-1S (Saudi Arabia)/UniSat 2 (Italy)/Rubin 2 (Germany) 650 km circular LEO at 65˚ inclination Baikonur
4 June 29, 2004 Demeter (France)/ Saudicomsat-1, Saudicomsat 2 & Saudisat 2 (Saudi Arabia)/ LatinSat C & LatinSat D (Argentina)/ Unisat-3 (Italy)/ Amsat Echo (USA) 700 km × 850 km Sun-synchronic orbit at 98˚ inclination Baikonur
5 August 24, 2005 OICETS & INDEX (Japan) 600 km × 50 km Sun-synchronic orbit at 98˚ inclination Baikonur
6 July 12, 2006 Genesis I (USA) 560 km circular LEO at 65˚ inclination Yasny
7 July 26, 2006 BelKA (Belarus)/ UniSat-4 & PiCPoT (Italy)/ Baumanets ( Russia)/ AeroCube-1, CP1, CP2, ICEcube-1, ICEcube-2, ION, KUTESat, Merope, Rincon 1, Mea Huaka`i (Voyager) & SACRED (USA)/HAUSAT-1 (South Korea)/Ncube-1 (Norway)/SEEDS (Japan) failed to reach orbit Baikonur
8 17 April, 2007 EgyptSat 1/SaudiSat 3/SaudiComSat 3-7 /AKS 1/AKS 2/Cal Poly Picosatellite Project 3 &4/CAPE 1/Libertad 1/AeroCube 2/CubeSat TestBed 1/MAST 692 km × 665 km Sun synchronous orbit at 98˚ inclination[3] Baikonur
9 15 June, 2007 TerraSAR-X 514 km circular LEO at 97˚ inclination[4] Baikonur
10 28 June, 2007 Genesis II 560 km circular LEO at 65˚ inclination Yasny
11 2008-08-29 RapidEye 1/2/3/4/5 [5] Baikonur
12 1 October 2008 THEOS SSO Yasny
13 July 29, 2009 DubaiSat-1/Deimos-1/UK-DMC 2/Nanosat 1B/AprizeSat-3/AprizeSat-4 SSO Baikonur
Planned launches
14 July, 2009 [Cluster launch] planned Yasny
15 October, 2009 Tandem-X planned Baikonur
16 November, 2009 [Cryosat-2] planned Baikonur
17 March, 2010 [Sitch 2 cluster launch] planned Yasny

Launch failure

The committee investigating the failed launch on July 26, 2006 concluded that the failure was caused by a malfunctioning of the pumping hydraulic drive of combustion chamber #4. The control malfunctioning brought about the disturbances, which led to the roll instability, excessive dispersions of the yaw and pitch angles. Thrust termination occurred at 74 seconds after lift off. The crash site was located 150 km from the launch pad in an unpopulated area of Kazakhstan. Toxic propellants did pollute the crash site, forcing Russia to pay US$1.1m in compensation[6]. The rocket used for this launch was more than twenty years old. Procedures for launch have been changed to prevent future malfunctions of this kind.

References

  1. ^ "The Dnepr launcher". RussianSpaceWeb.com.
  2. ^ "UoSAT-12 Integrates with Dnepr for Launch on 21 April". Surrey Satellite Technology Ltd.
  3. ^ "EgyptSat 1/Saudisat-3 launch details" (in Russian). Roskosmos.
  4. ^ "TerraSAR-X launch details" (in Russian). Roskosmos.
  5. ^ "Five RapidEye remote sensing satellites launched". Spaceflight Now.
  6. ^ "Russia to pay Kazakhstan over US$1 million in compensation for damage from rocket crash". International Herald Tribune. 2006-10-03.