Data startu: | 16 maja 2017, 01:21 CEST |
Test statyczny: | 11.05, 18:45 CEST |
Ładunek: | satelita Inmarsat-5 F4 |
Masa ładunku: | 6070 kg (w tym 2437 kg paliwa) |
Orbita docelowa: | GEO |
Rakieta: | Falcon 9 v1.2 |
Platforma startowa: | LC-39A, Kennedy Space Center, Floryda |
I stopień: | nowy, B1034 |
Powrót I stopnia: | nie |
Do osiągnięcia orbity służy silnik na paliwo ciekłe o ciągu 445 N, do manewrów orbitalnych zestaw 8 silników jonowych (4 x 22N + 4 x 10N). Moc ogniw słonecznych to około 15 kW, planowany czas działania 15 lat. Wartość satelity to 220-250 mln USD.... hmm, 4 silniki jonowe po 22N? Rozumiem, ze on lecu od razu na Marsa i z powrotem?;-) Regards
Boeing XIPS 601 HP and 702 thrustershttp://www.daviddarling.info/encyclopedia/X/XIPS.html
Whereas chemical thrusters are limited by how much energy is released during the combustion process, ion thrusters are dependent on the amount of electrical power available: more power means faster-moving ions and higher thrust. Boeing currently offers two different commercial xenon ion engines. The 601HP XIPS is 13 cm in diameter, uses 500 watts of power, has a specific impulse of 2568 seconds, and produces a thrust of 18 millinewtons (mN). The larger 702 model is 25 cm in diameter, uses 4,500 watts, has a specific impulse of 3500 seconds, and gives a thrust of 165 mN.
A typical satellite uses up to four XIPS thrusters (two primary, two redundant) for station-keeping, all connected to the same xenon supply. Each primary device is switched on and off by a smart power unit that monitors and diagnoses operations automatically. In normal operation, a 601HP thruster operates for about 5 hours per day, a 702 for about 30 minutes per day.
The 601HP can perform all north-south station-keeping and spacecraft momentum control in two axes. Orbit and momentum control are accomplished through a series of two burns on each day of the station-keeping cycle. The 702, on the other hand, uses its high-power capacity to carry out all station-keeping and spacecraft momentum control. On-orbit mission maneuvers are achieved with a series of four daily burns, providing precise orbit control. This strategy maintains a ±0.005 degree station-keeping box, allowing for collocation of many satellites in a single orbital slot.
The 702 also offers the option of XIPS orbit-raising. Using XIPS to augment transfer orbit further reduces the amount of chemical propellant loaded. Larger payloads can thus be accommodated, with greater flexibility in the choice and use of a launch vehicle. Chemical propellant is used to place the satellite into a supersynchronous elliptical transfer orbit, and pre-programmed XIPS maneuvers are used to circularize the orbit and position the satellite in its final orbit.
Static fire test of Falcon 9 complete—targeting launch of Inmarsat-5 Flight 4 from Pad 39A on Monday, May 15.https://twitter.com/SpaceX/status/862721606103072768
Noo ciekawe czy w tym roku wszystie Falcony polecą bez żadnej wpadki - tego życzę Elonowi z całych sił.
Falcon 9 and Inmarsat-5 Flight 4 vertical on Pad 39A. The 49-minute launch window opens at 7:21 p.m. EDT, or 23:21 UTC.https://twitter.com/SpaceX/status/864144831190188032
Tak czy inaczej najbliższy start bez odzyskiwania to będzie prawdopodobnie Intelsat 35e, aktualnie planowany na 1 lipca.
SpaceX manifest news today: Iridium launch from Vandenberg jumps from June 29 to June 25, IS-35e from Cape NET July 1, then SES-11 late Julyhttps://twitter.com/stephenclark1/status/867821279071666178
Kilka? Nie kojarzę jakiś konkretnych liczb, choć może coś mnie ominęło. Pewnie w przyszłości zbyt ciężkie ładunki będą chcieli przerzucać na FH. Tak czy inaczej najbliższy start bez odzyskiwania to będzie prawdopodobnie Intelsat 35e, aktualnie planowany na 1 lipca. Satelita waży około 6 ton.