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What's On, Transponder and channel support
*New Channels*
Satellite Channels on 23.5 East Astra 3A & 3B
SES- 4 Launch 23.5E
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<blockquote data-quote="william-1" data-source="post: 788513" data-attributes="member: 193781"><p>LIVE: ILS Proton-M launches with SES-4</p><p>February 14th, 2012 </p><p></p><p>International Launch Services (ILS) have launched their first Proton-M rocket of the year on Tuesday. Lift off came at 19:36 GMT from the Baikonur Cosmodrome in Kazakhstan, with the Proton’s Briz-M Upper Stage tasked with deploying the large telecommunications satellite after nine hours of flight.</p><p></p><p>Proton Launch:</p><p></p><p>The Proton booster tasked with the launch of the satellite was 4.1 m (13.5 ft) in diameter along its second and third stages, with a first stage diameter of 7.4 m (24.3 ft). Overall height of the three stages of the Proton booster is 42.3 m (138.8 ft).</p><p></p><p>The first stage consists of a central tank containing the oxidizer surrounded by six outboard fuel tanks. Each fuel tank also carries one of the six RD-276 engines that provide first stage power. Total first stage vacuum-rated level thrust is 11.0 MN (2,500,000 lbf).</p><p></p><p>Of a conventional cylindrical design, the second stage is powered by three RD-0210 engines plus one RD-0211 engine and develops a vacuum thrust of 2.4 MN (540,000 lbf).</p><p></p><p>Powered by one RD-0213 engine, the third stage develops thrust of 583 kN (131,000 lbf), and a four-nozzle vernier engine that produces thrust of 31 kN (7,000 lbf). Guidance, navigation, and control of the Proton M during operation of the first three stages is carried out by a triple redundant closed-loop digital avionics system mounted in the Proton’s third stage.</p><p></p><p>The Breeze-M upper stage is the Phase III variant, a recent upgrade which utilizes two new high-pressure tanks (80 liters) to replace six smaller tanks, along with the relocation of command instruments towards the centre – in order to mitigate shock loads when the additional propellant tank is being jettisoned.</p><p></p><p>The launch was set to take place at the end of 2011, prior to a problem associated with the avionics system of the launch vehicle’s Breeze M upper stage forcing a delay into 2012, ahead of further slips to the February 14 launch date. The initial delay was called after Khrunichev engineers at the launch site received an anomalous telemetry reading on the Breeze M upper stage during preflight testing.</p><p></p><p>The Proton M launch vehicle, utilizing a 5-burn Breeze M mission design, lifted off from Pad 39 at Baikonur Cosmodrome, Kazakhstan, with the SES-4 satellite on board.</p><p></p><p>The first three stages of the Proton used a standard ascent profile to place the orbital unit (Breeze M upper stage and the SES-4 satellite) into a sub-orbital trajectory. From this point in the mission, the Breeze M will perform planned mission manoeuvres to advance the orbital unit first to a circular parking orbit, then to an intermediate orbit, followed by a transfer orbit, and finally to a geostationary transfer orbit.</p><p></p><p>Separation of the SES-4 satellite is scheduled to occur approximately 9 hours, 12 minutes after liftoff.</p></blockquote><p></p>
[QUOTE="william-1, post: 788513, member: 193781"] LIVE: ILS Proton-M launches with SES-4 February 14th, 2012 International Launch Services (ILS) have launched their first Proton-M rocket of the year on Tuesday. Lift off came at 19:36 GMT from the Baikonur Cosmodrome in Kazakhstan, with the Proton’s Briz-M Upper Stage tasked with deploying the large telecommunications satellite after nine hours of flight. Proton Launch: The Proton booster tasked with the launch of the satellite was 4.1 m (13.5 ft) in diameter along its second and third stages, with a first stage diameter of 7.4 m (24.3 ft). Overall height of the three stages of the Proton booster is 42.3 m (138.8 ft). The first stage consists of a central tank containing the oxidizer surrounded by six outboard fuel tanks. Each fuel tank also carries one of the six RD-276 engines that provide first stage power. Total first stage vacuum-rated level thrust is 11.0 MN (2,500,000 lbf). Of a conventional cylindrical design, the second stage is powered by three RD-0210 engines plus one RD-0211 engine and develops a vacuum thrust of 2.4 MN (540,000 lbf). Powered by one RD-0213 engine, the third stage develops thrust of 583 kN (131,000 lbf), and a four-nozzle vernier engine that produces thrust of 31 kN (7,000 lbf). Guidance, navigation, and control of the Proton M during operation of the first three stages is carried out by a triple redundant closed-loop digital avionics system mounted in the Proton’s third stage. The Breeze-M upper stage is the Phase III variant, a recent upgrade which utilizes two new high-pressure tanks (80 liters) to replace six smaller tanks, along with the relocation of command instruments towards the centre – in order to mitigate shock loads when the additional propellant tank is being jettisoned. The launch was set to take place at the end of 2011, prior to a problem associated with the avionics system of the launch vehicle’s Breeze M upper stage forcing a delay into 2012, ahead of further slips to the February 14 launch date. The initial delay was called after Khrunichev engineers at the launch site received an anomalous telemetry reading on the Breeze M upper stage during preflight testing. The Proton M launch vehicle, utilizing a 5-burn Breeze M mission design, lifted off from Pad 39 at Baikonur Cosmodrome, Kazakhstan, with the SES-4 satellite on board. The first three stages of the Proton used a standard ascent profile to place the orbital unit (Breeze M upper stage and the SES-4 satellite) into a sub-orbital trajectory. From this point in the mission, the Breeze M will perform planned mission manoeuvres to advance the orbital unit first to a circular parking orbit, then to an intermediate orbit, followed by a transfer orbit, and finally to a geostationary transfer orbit. Separation of the SES-4 satellite is scheduled to occur approximately 9 hours, 12 minutes after liftoff. [/QUOTE]
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What's On, Transponder and channel support
*New Channels*
Satellite Channels on 23.5 East Astra 3A & 3B
SES- 4 Launch 23.5E
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