Jump to content

Rokot

From Wikipedia, the free encyclopedia

This is an old revision of this page, as edited by 131.111.213.41 (talk) at 20:52, 17 April 2008 (History). The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.

Rockot

The Rockot (also Rokot) (Template:Lang-ru) is a Russian space launch vehicle that can launch a payload of 1,950 kilogrammes into a 200 kilometre high Earth orbit with 63° inclination. It is a derivative of the UR-100N (SS-19 Stiletto) intercontinental ballistic missile (ICBM), supplied and operated by Eurockot Launch Services. The first launches started in the 1990s from Baikonur Cosmodrome out of a silo. Later commercial launches commenced from Plesetsk Cosmodrome using a launch ramp specially rebuilt from one for the Cosmos-3M rocket. The cost of a commercial launch is estimated at 13 to 15 million United States dollars.

Specifications

Rockot's total mass is 107 tonnes, its length 29 metres and its maximum diameter 2.5 metres. The liquid-fueled rocket comprises three stages: the lower two are based on the Soviet UR-100N ICBM; the third stage is a Breeze-KM. All stages use UDMH (unsymmetrical Dimethylhydrazine) as fuel and dinitrogen tetroxide as oxidiser. The Strela is a similar rocket, also based on the SS-19.

History

The first suborbital test launch succeeded on 1990 November 20 in Baikonur Cosmodrome. On 1994 December 26 Rockot brought its first satellite into Earth orbit. Eurockot Launch Services GmbH, a joint venture between EADS SPACE Transportation and the Khrunichev State Research and Production Space Center, markets the rockets today, moving the launch site to Plesetsk. There, the first launch took place on 2000 May 16. Also the Russian space centre Svobodny has SS-19 launch silos, which can be modified for Rockots if required.

After a number of successful launches, on 2005 October 8 a Rockot carrying a European Space Agency satellite, CryoSat, the launch vehicle 2nd stage main engine was not shut down properly, resulting in a catastrophic failure and automatic termination of the launch mission by the on-board computer, resulting in the loss of the payload. After the failed CryoSat launch, all Rockot launches were suspended until the failure was identified. The root cause was unambiguously identified and the corrective measures for Rockot's return-to-flight were implemented for the South Korean Kompsat-2 earth observation satellite launch which took place successfully on July 28, 2006.

Launch table

as of: 2006 July 28

Date (UTC) Type Launch site Payload Payload type Notes
1990 November 20 Rockot/Breeze-K Ba LC131 experimental payload Suborbital, success
1991 20 December Rockot/Breeze-K Ba LC175/1 experimental payload Suborbital, success
1994 26 December Rockot/Breeze-K Ba LC175/1 Radio-ROSTO Amateur radio satellite success, first orbital mission
1999 22 December Rockot/Breeze-K Pl LC133 RSVN-40 experimental payload no launch, rocket irreperably damaged during preparation
2000 16 May Rockot/Breeze-KM Pl LC133 SimSat-1 and 2 Iridium-mock-ups success
2002 17 March Rockot/Breeze-KM Pl LC133 GRACE-1 and 2 research satellite success
2002 20 June Rockot/Breeze-KM Pl LC133 Iridium-97 and 98 communication satellites success
2003 30 June Rockot/Breeze-KM Pl LC133 MIMOSA, DTUSat, MOST, Cute-I, QuakeSat, AAU-Cubesat, Can X-1, Cubesat-XI, Monitor-E mockup NLS satellites and Monitor-E-Mockup success
2003 30 October Rockot/Breeze-KM Pl LC133 SERVIS-1 Japanese test satellite success
2005 26 August Rockot/Breeze-KM Pl LC133 Monitor-E1 earth observation satellite success
2005 8 October Rockot/Breeze-KM Pl LC133 CryoSat earth observation satellite failure, launch terminated after 2nd stage main engine was not shut down correctly, resulting in an explosion, causing the vehicle to exceed its flight envelope limit and thereby causing the automatic termination of the launch and the re-entry of the combined Rockot 2nd stage/3rd stage/CryoSat spacecraft stack
2006 28 July Rockot/Breeze-KM Pl LC133 KOMPSAT 2 earth observation satellite success

Planned launches

Date (UTC) Type Launch site Payload Payload type Notes
2008 Rockot/Breeze-KM Pl LC133 GOCE ESA earth observation satellite
2008 Rockot/Breeze-KM Pl LC133 SMOS, PROBA-2 [1] ESA Soil Moisture and Ocean Salinity and ESA Project for On-Board Autonomy
2009 Rockot/Breeze-KM Pl LC133 SERVIS-2 Japanese test satellite Announced February 15, 2007[2]

References

  1. ^ Eurockot Launch Service Provider
  2. ^ "SERVIS-2 to be launched on Rockot". EUROCKOT Launch Services GmbH.