Author Topic: LIVE: SpaceX Falcon 9/Dragon CRS-2 (SpX-2) LAUNCH and FD-1 UPDATES (Read 278953 times)

Orbiter · « **Reply #240 on:** 03/01/2013 03:25 pm »

Quote from: Jason1701 on 03/01/2013 03:24 pm

Quote from: Chris Bergin on 03/01/2013 03:23 pm
SpaceX PAO:
One thruster pod is running. Two are preferred to take the next step which is to deploy the solar arrays. We are working to bring up the other two in order to plan the next series of burns to get to station.

"The other two?" Elon said there were four total..

Think it's implying you only need 3/4 to get to Station.

butters · « **Reply #241 on:** 03/01/2013 03:25 pm »

Does this mean that one of the original three inhibited pods is now online?

Borklund · « **Reply #242 on:** 03/01/2013 03:25 pm »

Quote from: Jason1701 on 03/01/2013 03:24 pm

Quote from: Chris Bergin on 03/01/2013 03:23 pm
SpaceX PAO:
One thruster pod is running. Two are preferred to take the next step which is to deploy the solar arrays. We are working to bring up the other two in order to plan the next series of burns to get to station.

"The other two?" Elon said there were four total..

He means that 1 is working now, they'll bring up another (2 total) to deploy solar arrays, then "bring up the other 2" (up to 4 total).

Tampabayrays · « **Reply #243 on:** 03/01/2013 03:29 pm »

Quote from: Jason1701 on 03/01/2013 03:14 pm

Quote from: corrodedNut on 03/01/2013 03:14 pm
Orbital mechanics question: How does delayed (knock on wood) firings affect rendvz?

If they miss their first firing, which IIRC was ~2.5 hours after launch, the rendezvous would probably take a lot longer.

You agree with the press kit, which states:
DRAGON ON-ORBIT OPERATIONS AND APPROACH TO STATION
Hour/Min/Sec Events
0:11 Start sequence to deploy solar arrays
2:26 Start GNC (guidance and navigation control) bay door deployment—this door holds sensors
necessary for rendezvous. Coelliptic burn places Dragon in a circular orbit

Source: http://www.spacex.com/downloads/crs2-press-kit.pdf

krytek · « **Reply #244 on:** 03/01/2013 03:30 pm »

What's the Dragon's computer called?
Dragon Control Unit? Vehicle Control Unit? Dragon Heart?

Targeteer · « **Reply #245 on:** 03/01/2013 03:30 pm »

NASA commentary updates have been limited to tweet and SPACEX PAO inputs--nothing from the NASA side.

Info flow is definitely different when a private company is running the show...

Chris Bergin · « **Reply #246 on:** 03/01/2013 03:30 pm »

Remember guys, we have to keep this on updates only.

bastro · « **Reply #247 on:** 03/01/2013 03:39 pm »

Elon Musk ‏@elonmusk
Thruster pod 3 tank pressure trending positive. Preparing to deploy solar arrays.

Chris Bergin · « **Reply #248 on:** 03/01/2013 03:39 pm »

Wow you're fast, Bastro

That sounds like good news. Waiting for array deploy.

Targeteer · « **Reply #249 on:** 03/01/2013 03:41 pm »

Is tank pressurization an indication that an inhibit has been removed?

Prober · « **Reply #250 on:** 03/01/2013 03:42 pm »

Had some issues on my side with Bandwidth also.

zipped up these Screen grabs for your enjoyment.

Robotbeat · « **Reply #251 on:** 03/01/2013 03:43 pm »

Quote from: Targeteer on 03/01/2013 03:41 pm

Is tank pressurization an indication that an inhibit has been removed?

I think it's an indication that they can remove the inhibit.

IRobot · « **Reply #252 on:** 03/01/2013 03:44 pm »

Quote from: Targeteer on 03/01/2013 03:41 pm

Is tank pressurization an indication that an inhibit has been removed?

Trending positive means that the reading is increasing, probably from zero. My guess is the sensor was reading zero pressure and now the averaged value is increasing to nominal value...

Ben the Space Brit · « **Reply #253 on:** 03/01/2013 03:46 pm »

Quote from: Robotbeat on 03/01/2013 03:43 pm

Quote from: Targeteer on 03/01/2013 03:41 pm
Is tank pressurization an indication that an inhibit has been removed?

I think it's an indication that they can remove the inhibit.

I got the impression that he was going to send a manual override command and start the thruster system.