Solar Dynamics Observatory

Mero · **Inviato:** 11/02/2010, 11:17

Oggi parte! [}:)]

Mero · **Inviato:** 11/02/2010, 14:35

La tendenza è quella di farlo partira, anche se occasionalmente ci sono delle raffiche di vento, manca circa 1ora e 30 minuti, 5 minuti prima decideranno....

Although winds are marginal and occasionally gusting above the limit, the overall trend is much better than yesterday's. An area of clouds has appeared off to the west, and a weather aircraft will fly out and take a closer look at the clouds' thickness and temperature.

Launch managers will decide about five minutes before launch -- the last minute of the T-4 minute hold -- whether to commit to launch at 10:23 a.m. If they decide to wait until further in the window, due to wind or another issue, they will stay in the T-4 minute hold and the spacecraft will remain on external power until the decision is made to come out of the hold.

by
http://www.nasa.gov/mission_pages/sdo/l ... _blog.html

Mero · **Inviato:** 11/02/2010, 14:39

Carburante al 30 per cento.

.....

80 per cento....

.....

95 per cento.....

GIANLUCA1989 · **Inviato:** 11/02/2010, 15:02

Centaur Liquid Oxygen Loading Complete
Thu, 11 Feb 2010 02:54:04 PM GMT+0100

The Centaur upper stage's liquid oxygen level has reached 95 percent. At this point, the "topping" process will pump small amounts of the propellant into the tank to replace any that evaporates during the rest of the countdown.
http://www.nasa.gov/mission_pages/sdo/l ... _blog.html

Mero · **Inviato:** 11/02/2010, 15:07

Alla Nasa sono ottimisti, venti al di sotto dei 20 nodi, e le nudi non dovrebbeo costituire un problema...

GIANLUCA1989 · **Inviato:** 11/02/2010, 15:10

Spacecraft Test Team "Go" for Launch
Thu, 11 Feb 2010 03:07:27 PM GMT+0100

The Solar Dynamics Observatory test team reports there are no problems with the spacecraft, and with the exception of the switch to internal power, SDO is ready to fly. The spacecraft will change to internal power after launch managers commit to a launch time. Right now, the team continues to aim for the opening of today's launch window at 10:23 a.m.

Mero · **Inviato:** 11/02/2010, 15:18

La squadra sta cominciando il carico di 12.680 litri di idrogeno liquido nella fase superiore di Centaur . Atlas V, carico di ossigeno liquido ha appena superato il 50 per cento.

Centaur Liquid Hydrogen Tanking Under Way
Thu, 11 Feb 2010 03:12:23 PM UTC+0100

The team is beginning to load 12,680 gallons of liquid hydrogen into the Centaur upper stage. Atlas V liquid oxygen loading just passed 50 percent.

PER INFO:

Il Solar Dynamics Observatory's Atmospheric Imaging Assembly permetterà agli scienziati di vedere l'intero disco del sole in una risoluzione molto alta - 4.096 da 4.096 millimetri tassa-coupled device, o CCD. La luce-sensibili memorizza i dati delle immagini CCD e lo converte in colore. In confronto, una fotocamera digitale standard utilizza un 7,176 da 5,329 millimetri sensore CCD.
by
Nasa.gov

GIANLUCA1989 · **Inviato:** 11/02/2010, 15:31

T-47 minutes and counting.
Circa la metà dell'idrogeno liquido è stato caricato a bordo.

Seguite la diretta qua(non nel sito della NASA perché ha oltre un minuto di ritardo)
http://www.spaceflightnow.com/atlas/av021/status.html

Cita:

Flight Termination System Checks Complete
Thu, 11 Feb 2010 03:47:32 PM GMT+0100

Range Safety has completed their final set of communication checks between range antennas and the Atlas V vehicle. That's the communication loop the rocket's flight termination system would use to destroy the rocket if it veered dangerously off course.

Winds have increased a bit, occasionally bumping up above the 20-knot limit, which is exactly what forecasters predicted might happen. We're still expected to find a time during the launch window when winds stay within limits.