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#160
by
stockman
on 21 Nov, 2010 18:43
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#161
by
robertross
on 21 Nov, 2010 18:46
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#162
by
butters
on 21 Nov, 2010 19:02
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Weather is currently GREEN.
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#163
by
stockman
on 21 Nov, 2010 20:18
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#164
by
HIPAR
on 21 Nov, 2010 20:53
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The weather .. Animated GIF
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#165
by
stockman
on 21 Nov, 2010 20:56
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looks like it is now sunny... and clear skies
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#166
by
PahTo
on 21 Nov, 2010 20:57
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Are we at L-1 hour?
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#167
by
stockman
on 21 Nov, 2010 21:03
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#168
by
Ben the Space Brit
on 21 Nov, 2010 21:04
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Would I be right in saying that weather constraints are less severe for uncrewed ELVs? So long as the wind is below the safety limits for the initial ascent phase, it shouldn't even matter if there is 100% overcast and rain.
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#169
by
butters
on 21 Nov, 2010 21:06
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Would I be right in saying that weather constraints are less severe for uncrewed ELVs? So long as the wind is below the safety limits for the initial ascent phase, it shouldn't even matter if there is 100% overcast and rain.
No, they have flight through precipitation and cumulus cloud rules. I'm not sure exactly why, but that's probably not an appropriate discussion for this thread.
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#170
by
uko
on 21 Nov, 2010 21:06
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#171
by
stockman
on 21 Nov, 2010 21:08
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Webcast starting in 25 minutes. - viewed here
mms://a49.l2973058048.c29730.g.lm.akamaistream.net/D/49/29730/v0001/reflector:58048
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#172
by
TJL
on 21 Nov, 2010 21:10
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It seems that this Delta 4 may be carrying the same type satellite that was launched by earlier Titan 4 launch vehicles.
Is the Delta 4 Heavy capable of carrying heavier payloads than the Titan 4?
Thank you.
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#173
by
stockman
on 21 Nov, 2010 21:12
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now that the sun is going down you can see the flare stack burning just in front of the Delta IVH
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#174
by
Nick L.
on 21 Nov, 2010 21:16
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It seems that this Delta 4 may be carrying the same type satellite that was launched by earlier Titan 4 launch vehicles.
Is the Delta 4 Heavy capable of carrying heavier payloads than the Titan 4?
Thank you.
Payload capacity is roughly the same I believe.
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#175
by
Lee Jay
on 21 Nov, 2010 21:20
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So long as the wind is below the safety limits for the initial ascent phase, it shouldn't even matter if there is 100% overcast and rain.
Running into a few million rain drops at supersonic speeds or carrying a lightning strike to the ground through your vehicle are both bad ideas whether there are crew on board or not.
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#176
by
Targeteer
on 21 Nov, 2010 21:24
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It seems that this Delta 4 may be carrying the same type satellite that was launched by earlier Titan 4 launch vehicles.
Is the Delta 4 Heavy capable of carrying heavier payloads than the Titan 4?
Thank you.
Payload capacity is roughly the same I believe.
May go higher when they start using RS-68A engines...
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#177
by
rdale
on 21 Nov, 2010 21:25
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Running into a few million rain drops at supersonic speeds
I thought most launch vehicles are okay with light rain - why is this one difference?
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#178
by
Jim
on 21 Nov, 2010 21:28
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Detla II avoids all rain. Can't handle the extra weight of the ice.
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#179
by
Lee Jay
on 21 Nov, 2010 21:28
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Running into a few million rain drops at supersonic speeds
I thought most launch vehicles are okay with light rain - why is this one difference?
It was a general statement. Plus, as you know, you might not know if there's hail in those clouds or not.