Marc Boucher: April 2011 Archives

NASA To Work Issue Over the Weekend and Targets Monday for Launch of Endeavour

NASA To Work Issue Over the Weekend and Targets Monday for Launch of Endeavour, SpaceRef

"It will be 24 hours from the scrub time before technicians can access Endeavour's aft cabin Load Control Assembly (LCA). The LCA, a switchbox, is now where engineers think the problem is. By dinner time Saturday managers feel they will be able to start troubleshooting the problem after they've gained access to the LCA. Managers will meet Saturday night and Sunday morning to discuss progress on the issue. If they are to launch on Monday NASA will have to make that call no later than early Sunday afternoon so that by around 3 pm EDT they can begin preparations for launch."

Space Shuttle Endeavour Poised to Launch TodaySpace Shuttle Endeavour on Track for a 3:47 Launch

This morning at 6:22 p.m. EDT the loading of the space shuttle's external tank with 500,000 gallons of liquid oxygen and hydrogen began and the topping off of the tank's propellants will continue until launch time. All systems onboard Endeavour are functioning normally. There is a 70 percent chance of favorable weather for launch. The primary weather concern is for low cloud ceilings and crosswinds at the Shuttle Landing Facility.

8:53 am EDT Update: There is an issue which the KSC team is working with the pressure in the fuel tank in the right OMS pod, but they believe it can be corrected. They are trying a crossfeed between the OMS tanks.

9:40 am EDT Update: KSC is reporting that the OMS pressure issue has been resolved. Both left & right tanks are balanced & below pressure limits.

10:25 am EDT Update: The President is scheduled to arrive at KSC at 2:00 pm today.

12:30 pm EDT Update: We have a 48 hour scrub due to the failure of both heaters for Auxiliary Power Unit 1. A press briefing will be held later this afternoon to discuss the issue.

1:00 pm EDT Update: We NOW have a 72 hour scrub. NASA believes it has a problem in one of the load control assembly boxes, most like a short in that box or in the electrical lines to that box but won't know for sure until they can access the area and do detailed troubleshooting. They have to get into the aft of the orbiter and they'll first put in a platform set but the location is such that it will take some time to get to the load control assembly.

ksc_fire_th.jpgBrush Fire at KSC Near Media Center, SpaceRef

A small brush fire started shortly before 1:00 pm near the Kennedy Space Center media center. At present KSC fire personnel have responded to the fire and a NASA PAO representative has said they expect to have it under control soon. As you can see by these pictures fire personnel have been stationed near the media center. Inside the media center a Lego demo was ongoing and activity is normal.

Keith's note: According to Marc Boucher this brush fire is clearly spreading and flames are visible from locations near the press site. Here's a new photo taken moments ago from the press site.
SpaceflightNow is streaming live video of the fire.

NASA Pre-Countdown Update only has Weather as a Potential IssueNASA Pre-Countdown Update only has Weather as a Potential Issue, SpaceRef

"At today's NASA pre-countdown briefing NASA Test Director Jeremy Graeber said that there currently is no technical issues while a potential severe thunder storm coming through Thursday is the only issue at this time that could delay the shuttle launch."

Space Debris No Threat to Station, NASA

"Tracking data now indicates that a piece of orbital debris being monitored by Mission Control Houston will not pass close enough to the International Space Station to warrant the Expedition 27 crew members taking safe haven within their Soyuz TMA-20 spacecraft."



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