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#100
by
Zipi
on 04 Dec, 2009 07:25
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#101
by
Chris Bergin
on 04 Dec, 2009 13:24
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Delayed again. No word of why.
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#102
by
Chris Bergin
on 04 Dec, 2009 13:25
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NET December 5 is official.
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#103
by
tombo74!
on 04 Dec, 2009 13:45
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Will the launch window always be around the same time, e.g. early evening EST -> middle of night here.
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#104
by
Chris Bergin
on 04 Dec, 2009 13:48
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Delta IV WGS-3 Mission Targeted for Launch Dec. 5
Cape Canaveral AFS, Fla., (Dec. 4, 2009) - The launch of the Air Force’s Delta IV Wideband Global SATCOM-3 (WGS-3) mission is now targeted for Dec. 5 with a launch window of 7:23-8:47 p.m. EST. After evaluating the situation, mission managers believe this will give the launch team the time required to replace an electronics card that is part of the ground equipment used to monitor telemetry data from the Delta IV and related systems for the launch. An anomaly with this monitoring system hardware led to the scrub of the first launch attempt Dec. 3. The Delta IV and WGS-3 spacecraft are safe and secure. Further updates on the status of the Delta IV WGS-3 mission will be issued as new information is available.
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#105
by
vt_hokie
on 04 Dec, 2009 18:39
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... it's staying up all night and then having the most critical events occur when your body is trying to sleep.
Heh, I know that feeling all too well!
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#106
by
rdale
on 05 Dec, 2009 13:27
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Skies should be rapidly clearing out this afternoon (had some nice storms this morning.) There's just a small chance of a rain shower this evening, but it is expected to be breezy (15-25kts with some higher gusts.)
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#107
by
Chris Bergin
on 05 Dec, 2009 13:44
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And confirmation they are on for tonight
Delta IV WGS-3 Mission Officially Scheduled for Dec. 5
Cape Canaveral AFS, Fla., (Dec. 4, 2009) - The launch of the Air Force’s Delta IV Wideband Global SATCOM-3 (WGS-3) mission is now scheduled for Dec. 5 with a launch window of 7:23-8:47 p.m., EST. The faulty electronics card in a piece of ground support equipment used to monitor telemetry data was replaced and the Delta IV and WGS-3 spacecraft are ready for flight. The current weather forecast calls for a 40 percent chance of acceptable weather during the launch window.
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#108
by
Chris Bergin
on 05 Dec, 2009 14:04
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Cape Canaveral AFS, Fla., (Dec. 5, 2009) - For the second time in three days, a United Launch Alliance Delta IV rocket with the Air Force’s Wideband Global SATCOM-3 (WGS-3) satellite sits poised on its Space Launch Complex-37 launch pad ready for flight. The WGS-3 mission is set to launch at 7:23 p.m. EST with its launch window stretching until 8:47 p.m. The WGS-3 mission is the third installment of the Wideband Global SATCOM (WGS) system. The WGS satellites are important elements of a new high-capacity satellite communications system providing enhanced communications capabilities to America’s troops in the field for the next decade and beyond. (Photo by Pat Corkery, United Launch Alliance)
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#109
by
Ben the Space Brit
on 05 Dec, 2009 14:52
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I know that this will sound strange but that Delta-IVM (5,4) looks like a mock-up for some reason. It might just be the lighting angle. However, think it is because the hull is so clean. I guess I'm too used to the orbiters' mosaic hull TPS, the SRM segment joins and the longditudinal ridges on the ET giving the shuttle a slightly weathered and lived-in look.
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#110
by
sdsds
on 05 Dec, 2009 19:54
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Should we expect to see anything different with this launch of a new variant?
Obviously, there will be more SRB exhaust than with any prior Delta IV. How about the gaseous hydrogen flame from the CBC? With the SRBs providing thrust and control authority, will the CBC propellant ratio be tuned even more aggressively for improved Isp instead of thrust, leaving even more free hydrogen to burn dramatically at the base of the rocket. Any chance of that?
Also, is the thrust to weight ratio significantly different at liftoff? Will it make a visible difference in vehicle acceleration?
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#111
by
Antares
on 05 Dec, 2009 19:59
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yes, no, no, yes, yes. BOTE says acceleration will be 50% higher than 2 solids.
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#112
by
Ronsmytheiii
on 05 Dec, 2009 20:15
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#113
by
Ronsmytheiii
on 05 Dec, 2009 22:31
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#114
by
rdale
on 05 Dec, 2009 22:39
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Currently mostly cloudy, winds from the northwest around 10-15mph.
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#115
by
Andrewwski
on 05 Dec, 2009 22:52
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According to Todd Halvorson of Florida Today, probability of launch weather violation lowered to 20%.
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#116
by
Ronsmytheiii
on 05 Dec, 2009 22:57
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#117
by
Chris Bergin
on 05 Dec, 2009 22:59
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#118
by
Ronsmytheiii
on 05 Dec, 2009 22:59
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#119
by
Ronsmytheiii
on 05 Dec, 2009 23:00
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