Author Topic: STS-121: July 1 Launch SCRUB (Read 137039 times)

DaveS · « **Reply #40 on:** 07/01/2006 01:13 pm »

Quote

kraisee - 1/7/2006 2:57 PM

Q: These checks NASATV just refered to - this is where the ECO had their problems on the first attempt for 114 last year, right?

Ross.

No. That was during the standard check around T-2 hours, 25 minutes when the astronauts were boarding Discovery.

kraisee · « **Reply #41 on:** 07/01/2006 01:15 pm »

Ta. I was in a bus on my way to the Sat-V Center when that lot went awry, so thanks for clarifying where it occurred. I'll watch closely this time

Ross.

GioFX · « **Reply #42 on:** 07/01/2006 01:15 pm »

LOX in stable replenish mode.

psloss · « **Reply #43 on:** 07/01/2006 01:15 pm »

Quote

kraisee - 1/7/2006 8:49 AM

From the very end of: http://spaceflight.nasa.gov/shuttle/reference/shutref/orbiter/rcs/overview.html

"The vernier engines are operable in a steady-state thrusting mode of one to 125 seconds maximum as well as in a pulse mode with a minimum impulse time of 0.08 second. The vernier engines are used for finite maneuvers and stationkeeping (long-time attitude hold) and have an expansion ratio that ranges from 20-to-1 to 50-to-1. The vernier thrusters are not redundant."

Ross.

I thought the problem was with the heater system, not the thrusters themselves...we should hear more pretty soon as the two crews are headed out to the pad now.

psloss · « **Reply #44 on:** 07/01/2006 01:17 pm »

Current radar:

Stardust9906 · « **Reply #45 on:** 07/01/2006 01:18 pm »

Final inspection team and closeout crew on the way to the pad.

GioFX · « **Reply #46 on:** 07/01/2006 01:19 pm »

edit: final inspection team and close-out crew headed to the pad.

kevwalsh · « **Reply #47 on:** 07/01/2006 01:20 pm »

Very nervous now - we here on South coast of Ireland are expecting to see Discovery pass over at L+20!

GioFX · « **Reply #48 on:** 07/01/2006 01:20 pm »

but... shouldnt the ice frost team do thier inspection before the closeout crew arrives?

DaveS · « **Reply #49 on:** 07/01/2006 01:23 pm »

Quote

GioFX - 1/7/2006 3:07 PM

but... shouldnt the ice frost team do thier inspection before the CUC arrives?

No. The "Ice Team" which is just nickname by the way, just inspects the vehicle for any dangerous ice-build up or debris.

That doesn't affect the Close Out Crew's work which is in the White Room.

GioFX · « **Reply #50 on:** 07/01/2006 01:24 pm »

thanks dave

Chris Bergin · « **Reply #51 on:** 07/01/2006 01:28 pm »

"Cool" job

Stardust9906 · « **Reply #52 on:** 07/01/2006 01:28 pm »

Looks like they have arrived at the pad now.

hyper_snyper · « **Reply #53 on:** 07/01/2006 01:31 pm »

I sure hope they resolve the heater issue. I have chips, soda, and popcorn out for this.

nacnud · « **Reply #54 on:** 07/01/2006 01:34 pm »

Well they just 'fixed' one bug

dutch courage · « **Reply #55 on:** 07/01/2006 01:35 pm »

Were the guys in the white room wearing some breathing apparatus?

kraisee · « **Reply #56 on:** 07/01/2006 01:39 pm »

I'd say that's what it was. Looked like the first thing they did in the WR was "sniff" the air for harmful buildups of H2 gas.

I guess those packs would give them a chance to get out safely if they detected something bad there. I don't think they had any masks on at the time though.

Ross.

shuttlefan · « **Reply #57 on:** 07/01/2006 01:39 pm »

Could this heater issue be something they end up analysing all the way down to the T-9 minute hold?

astrobrian · « **Reply #58 on:** 07/01/2006 01:41 pm »

on my way to a launch party, God Speed Discovery and Waaaa Hooooooooooo

kraisee · « **Reply #59 on:** 07/01/2006 01:41 pm »

One chap I just spoke with said they might make it resolvable on-orbit.

Ross.