LIVE: Delta-IV - WGS-05 - May 24, 2013

[input~2]

Navigational warning for SRMs (B), fairing (C), 1st stage (D)

NAVAREA IV    275/2013(11,25,26).  (181003Z MAY 2013)
WESTERN NORTH ATLANTIC.
ROCKETS.
1. HAZARDOUS OPERATIONS 230026Z TO 230135Z MAY,
   ALTERNATE 240027Z TO 240134Z MAY
   IN AREAS BOUND BY:
   A. 28-33N 080-34W, 28-34N 080-33W,
      28-31N 080-10W, 28-30N 080-06W,
      28-24N 079-45W, 28-21N 079-45W,
      28-24N 080-12W, 28-30N 080-34W.
   B. 28-36N 079-15W, 28-25N 078-10W,
      27-47N 078-18W, 27-57N 079-23W.
   C. 26-21N 068-42W, 25-49N 066-45W,
      24-57N 067-03W, 25-29N 068-59W.
   D. 21-49N 055-02W, 20-19N 050-38W,
      19-13N 051-05W, 20-43N 055-26W.
2. CANCEL THIS MSG 240234Z MAY 13.

[jacqmans]

ULA ‏@ulalaunch

#WGS5 is set to lift off on a ULA #DeltaIV on Thursday! The 30-min launch window (note change) opens @ 8:27 pm EDT. Weather is 40% favorable

[jacqmans]

[jacqmans]

[00rs250]

Too bad the launch window is not now, it is awesome outside.

[Chris Bergin]

The Launch Readiness Review was completed today in preparation for the Air Force’s fifth Wideband Global SATCOM (WGS-5) launch. The mission is set to liftoff on a ULA Delta IV on Thursday, May 23 from Space Launch Complex 37 at Cape Canaveral Air Force Station in Florida. The 30-minute launch window opens at 8:27 p.m. EDT. Today’s L-1 forecast continues to show a 40 percent chance of favorable weather conditions for launch.

[Chris Bergin]

Moved for live coverage

[DaveS]

MST roll to the launch park position is currently underway.

[jacqmans]

ULA ‏@ulalaunch 

She's a beauty! #DeltaIV with #WGS5 as the Mobile Service Tower rolls. pic.twitter.com/CWtimLPnrx

[Star One]

Is the 9450 the most commonly used version of the Delta?

[Jim]

Is the 9450 the most commonly used version of the Delta?

least and tie for least after this launch

[Jim]

Scrub

[kevin-rf]

[Chris Bergin]

Thanks Jim. Scrub title until tomorrow attempt.

[Chris Bergin]

Here's the ULA release:

Cape Canaveral Air Force Station, Fla. (May 23, 2013) -- The launch of a United Launch Alliance Delta IV rocket carrying the Wideband Global SATCOM (WGS-5) satellite for the U.S. Air Force was scrubbed today due to an issue associated with a ground support system helium pressurization line. The launch has been rescheduled for Friday, May 24, at 8:27 p.m. EDT at the opening of a 30-minute window. The forecast for tomorrow shows an 80 percent chance of favorable weather conditions for launch.

[Ben the Space Brit]

The weather was looking bad anyway, even without mechanical problems.

[edkyle99]

Is the 9450 the most commonly used version of the Delta?

least and tie for least after this launch

Who calls it a "9450"?  ULA doesn't on their web site or in their literature.

 - Ed Kyle

[William Graham]

Is the 9450 the most commonly used version of the Delta?

least and tie for least after this launch

Who calls it a "9450"?  ULA doesn't on their web site or in their literature.

 - Ed Kyle

Agreed. I don't think the four-digit designations have been used for the Delta IV since it has been in service, and in any case it was revised in the early 2000s by subtracting 5 from the first digit to bring it in line with the numeral in the rocket's name. That never caught on and it was dropped in favour of the M/M+(x,x)/H designations, so:
Delta IV Medium = Delta 4040 = Delta 9040
Delta IV-M+(4,2) = Delta 4240 = Delta 9240
Delta IV-M+(5,2) = Delta 4250 = Delta 9250
Delta IV-M+(5,4) = Delta 4450 = Delta 9450
Delta IV Heavy = Delta 4050H = Delta 9050H*

*I've never understood why this is 9050H not 9250H

The Delta III was the Delta 8930, and in theory it became the 3930, however it only ever flew in one configuration and was pretty much dead by the time they tried to bring the new designations in, so it never stuck.

The Delta II's 7000-series designations continued to be used universally, so the 2000-series designation never caught on. Even ULA uses the 7000-designations.

[Jim]

Is the 9450 the most commonly used version of the Delta?

least and tie for least after this launch

Who calls it a "9450"?  ULA doesn't on their web site or in their literature.

 - Ed Kyle

Agreed. I don't think the four-digit designations have been used for the Delta IV since it has been in service, and in any case it was revised in the early 2000s by subtracting 5 from the first digit to bring it in line with the numeral in the rocket's name. That never caught on and it was dropped in favour of the M/M+(x,x)/H designations, so:
Delta IV Medium = Delta 4040 = Delta 9040
Delta IV-M+(4,2) = Delta 4240 = Delta 9240
Delta IV-M+(5,2) = Delta 4250 = Delta 9250
Delta IV-M+(5,4) = Delta 4450 = Delta 9450
Delta IV Heavy = Delta 4050H = Delta 9050H*

*I've never understood why this is 9050H not 9250H

The Delta III was the Delta 8930, and in theory it became the 3930, however it only ever flew in one configuration and was pretty much dead by the time they tried to bring the new designations in, so it never stuck.

The Delta II's 7000-series designations continued to be used universally, so the 2000-series designation never caught on. Even ULA uses the 7000-designations.

The 2000, 3000 and 4000 series numbers were from the NLS I contract and not Boeing.  They were never used outside of the contract.

[Star One]

Is the 9450 the most commonly used version of the Delta?

least and tie for least after this launch

Who calls it a "9450"?  ULA doesn't on their web site or in their literature.

 - Ed Kyle

I saw it on Wikipedia a little while back?