Delta IV Heavy - Launch Update
From LaunchAlert -
DELTA IV HEAVY UPDATE
The following are excerpts from a ULA media update issued Saturday:
Everything is progressing toward the ULA Delta IV Heavy launch carrying the NROL-71 mission for the National Reconnaissance Office. The mission is set to lift off on a Delta IV Heavy rocket on Tuesday, Dec. 18 from Space Launch Complex-6 at Vandenberg Air Force Base in California. Today’s forecast shows a 20 percent chance of favorable weather conditions for launch. The launch time is 5:57 p.m. PST.
Launch Forecast Summary:
Overall probability of violating weather constraints: 80%
Primary concerns: Ground Winds
Overall probability of violating weather constraints for 24 hour delay: 20%
Primary concern: Ground Winds
Live broadcast coverage of launch will begin at 5:37 p.m. PST on Dec. 18.
Live launch updates and webcast available at: www.ulalaunch.com
*Note: Satellite frequencies changed from previous attempts
ALL TIMES PACIFIC
TUESDAY, DECEMBER 18
BARS + TONE – 5:06 P.M.
PROGRAM START – 5:37 P.M.
LAUNCH – 5:57 P.M
DIGITAL SATELLITE C-BAND DOWNLINK
SATELLITE — G3
TRANSPONDER — 2
BAND — C-BAND DIGITAL
ORBITAL POSITION — 95°W
HD BANDWIDTH — 18 MHz (HALF TRANSPONDER)
UPLINK — 5, 974.000 MHz (Horizontal)*
DOWNLINK — 3,7 49.000 MHz (Vertical)*
SYMBOL RATE — 13
FEC — ¾
DATA RATE — 17.9705
DVBS – QPSK
Webcast available at www.ulalaunch.com and www.youtube.com/unitedlaunchalliance
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