Author Topic: STS-121: July 1 Launch SCRUB (Read 137041 times)

psloss · « **Reply #60 on:** 07/01/2006 01:43 pm »

Quote

kraisee - 1/7/2006 9:28 AM

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

Ross.

Thanks for that...and I think I finally understand what you were saying about the redundancy of the heaters...haven't heard whether this is a specific heater failure or something common to multiple heaters...

dutch courage · « **Reply #61 on:** 07/01/2006 01:44 pm »

The Ice Team are almost standing in the boil-off fumes but the aren't wearing any breathing gear.

Stardust9906 · « **Reply #62 on:** 07/01/2006 01:45 pm »

The Ice Team at work.

Chris Bergin · « **Reply #63 on:** 07/01/2006 01:47 pm »

MSFC/MAF launch support:

"We're still waiting for any info in our MSR (Mission Support Room). If they do scrub, still no definite word on whether or not we'd do a tanking test."

psloss · « **Reply #64 on:** 07/01/2006 01:52 pm »

Florida Today has some details:
http://www.floridatoday.com/floridatoday/blogs/spaceteam/2006/07/details-on-thruster-issue.html

(Edit: specific link)

Chris Bergin · « **Reply #65 on:** 07/01/2006 01:54 pm »

Launch control console source:

"ECOs do look okay; they performed the "switchout" test as planned (after both LO2 and LH2 5% sensors indicated wet) and all the sensors switched to DRY, which indicated that they work properly. They've been switched back to WET, although I don't know why so early - they "normally" do that around the end of the T-9 minute hold."

psloss · « **Reply #66 on:** 07/01/2006 01:55 pm »

And Bill Harwood:
http://www.cbsnews.com/network/news/space/current.html

Quote

When thruster L5L was checked around 5:30 a.m., the temperature reading was ambient when it should have been warmer. Repairing the heater, if it has, in fact, failed, could be a fairly lengthy process, engineers say. NASA currently is looking into whether Discovery can be properly maneuvered without jet L5L if the system cannot be recovered.

Chris Bergin · « **Reply #67 on:** 07/01/2006 01:56 pm »

MAF: "Prepress is our big concern on the showstopper. We really don't know if this will behave"

Remember, we're allowed more cycles on this launch after the LCC was raised.

DaveS · « **Reply #68 on:** 07/01/2006 02:03 pm »

This image shows where RCS jet L5L is located.

otisbow · « **Reply #69 on:** 07/01/2006 02:07 pm »

NASA TV is on the satellites AMC-7 and AMC-6 with a DVB C band recevier. GO SHUTTLE

shuttlefan · « **Reply #70 on:** 07/01/2006 02:10 pm »

Apparently they are looking into possible ways of flying without this heater if it is declared a hard failure.

Flightstar · « **Reply #71 on:** 07/01/2006 02:14 pm »

Quote

shuttlefan - 1/7/2006 8:57 AM

Apparently they are looking into possible ways of flying without this heater if it is declared a hard failure.

I would personally find that undesirable, but not as undesirable as another cyro cycle of the tank from this scrub.

GioFX · « **Reply #72 on:** 07/01/2006 02:16 pm »

^ ditto

Paul Adams · « **Reply #73 on:** 07/01/2006 02:18 pm »

HD Net have just begun thier three hour coverage of the launch. It's amazing to see the process in High Definition!!

This should be fun!

dutch courage · « **Reply #74 on:** 07/01/2006 02:19 pm »

The LCC for the number of LH2 Prepressurization Cycles has changed from 11 max for STS-114 back to 13 max for STS-121.

Stardust9906 · « **Reply #75 on:** 07/01/2006 02:19 pm »

According to Bruce Buckingham they have “high hopes” that they can fly without the thruster.

HKS · « **Reply #76 on:** 07/01/2006 02:22 pm »

I think flying without that thruster is better than another cryo-load to the tank...

Zachstar · « **Reply #77 on:** 07/01/2006 02:25 pm »

I very much agree!

rdale · « **Reply #78 on:** 07/01/2006 02:31 pm »

Any thought to making one thread full of "I agree" "good luck astronauts" "the ship looks great" "can't wait for liftoff" posts and one for actual news?

Stardust9906 · « **Reply #79 on:** 07/01/2006 02:31 pm »

The crew at the breakfast table.