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The variants were planned with a 2 + 1 stage architecture based on 3 stage Proton/Briz M, but dispensing with the 2nd stage and featuring minor lengthening of the other two stages. The Proton Light 1st stage was planned with 4 main engines and external tanks to the 6 used by Proton Medium and Proton-M.
Proton-M / DM-03 Enhanced Baikonur Site 81/24: RVSN RF: GLONASS-M 748: VKO: Intended: Medium Earth: Navigation: 2 July: Launch failure GLONASS-M 749: VKO: Intended: Medium Earth: Navigation: GLONASS-M 750: VKO: Intended: Medium Earth: Navigation: First stage guidance failure due to angular velocity sensors installed upside down, rocket crashed ...
Following the failure, the Blok DM-03 was grounded for further tests, with a Proton-M/Briz-M and several smaller Soyuz-2 rockets being used for GLONASS launches over the next 30 months. [ 5 ] The July 2013 flight, which marked the Blok DM-03's return to flight was another GLONASS launch, also conducted from Site 81/24, with liftoff occurring on ...
Proton-M/DM-03 8K82KM/11S861-03 Site 81/24 Ekspress AM8: Geosynchronous Success Communications 935-56 16 October 2015 20:40:11 Proton-M/Briz-M 8K82KM/11S43 Site 200/39 Türksat 4B: Geosynchronous transfer Success [49] Communications, Commercial launch conducted by International Launch Services 535-44 13 December 2015 00:19:00 Proton-M/Briz-M ...
On 2 July 2013, a Proton-M/DM-03 launched from Site 81/24 carrying three GLONASS navigation satellites. Immediately after liftoff, the rocket began to pitch over, and rolled out of control. The rocket fell close to the launch pad and exploded, the extent of any damage to Site 81 or the Baikonur Cosmodrome is unclear.
On 2 July 2013, a Proton-M launching three GLONASS navigation satellites experienced a failure reminiscent of the 1960s disasters shortly after liftoff when the booster crashed near LC-39 at Baikonour, ending a 30-year unbroken stretch without a first stage failure; all future Proton flights were suspended pending investigation. [25]
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Briz-M stage failure 67 26 March 2013 Proton-M/Briz-M Baikonur, Kazakhstan Success Satmex 8 communications satellite Satellite placed into Geostationary transfer orbit [24] 68 15 April 2013 Proton-M/Briz-M Baikonur, Kazakhstan Success Anik-G1 satellite [25] 69 14 May 2013 Proton-M/Briz-M Baikonur, Kazakhstan Success Eutelsat-3D satellite [26] 70