NROL-44: Orion 10 (Mentor 8) – Delta IV-H [D-385] – Канаверал SLC-37B – 11.12.2020 01:09 UTC

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Dec 11, 2020 03:11

The anomaly team has completed its review of the helium regulator issue. A parameter in the Red Line Monitor will be turned off and monitored manually.

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Шо, о5?

 Emre Kelly @EmreKelly 2 мин. назад

ULA anomaly team is currently investigating "multiple alarms" seen during the latest swing arm system test at LC-37. Still targeting 2009 ET.

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К #522

12/11/2020 03:18 Stephen Clark

The Delta team reported multiple alarms during a swing arm functional test. One cylinder in the hydraulic system was in a hung condition, and lock pins have been reinstalled.

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12/11/2020 03:19 Stephen Clark

The launch team is loading the trajectory profile into the Delta 4's INCA flight computer at this time. The profile takes into account the upper level winds measured over Cape Canaveral by a series of weather balloons deployed over the past few hours.

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Dec 11, 2020 03:29

The Automatic Determination and Dissemination of Just Updated Steering Terms, better known as the ADDJUST file, is being loaded into the Delta IV Heavy rocket's Inertial Navigation and Control Assembly (INCA) flight computer by the flight control operator here at the Launch Control Center. This is the planned steering parameters for the INCA to use based on today's upper level wind conditions.

A series of weather balloons has been launched throughout the countdown from the Range weather station at Cape Canaveral to collect measurements of wind speeds and directions to determine if conditions aloft violate the controllability or structural loads on the rocket during ascent. The balloon data was transmitted to ULA engineers in Denver to select a steering profile that minimizes launch vehicle responses.

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 Stephen Marr @spacecoast_stve 6 мин. назад

ULA is marching toward liftoff, currently scheduled for 8:09pm EST (1:09am UTC), and #DeltaIVHeavy is looking magnificent!

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Dec 11, 2020 03:39

We are 30 minutes away for liftoff time for the Delta IV Heavy rocket and NROL-44 for the National Reconnaissance Office. Standing by for the final weather briefing.

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Dec 11, 2020 03:40

Weather is GO

Space Force Launch Weather Officer Will Ulrich reports the current and forecast conditions are acceptable for liftoff. Weather is GO.

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12/11/2020 03:38 Stephen Clark

The launch pad swing arm functional test has been completed after an earlier attempt resulted in multiple alarms. The Delta 4-Heavy countdown is on track for liftoff from Cape Canaveral at 8:09 p.m. EST (0109 GMT) on the NROL-44 mission.

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12/11/2020 03:44 Stephen Clark

The Delta launch team reports slew, or steering, checks of the rocket's three RS-68A main engines and the RL10B-2 upper stage engine have been completed.

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Dec 11, 2020 03:47

Upper level winds have been verified acceptable for flight.

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Dec 11, 2020 03:52

Conditioning of the vehicle tanks has been achieved.

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Dec 11, 2020 03:55

Countdown Holding

This is Delta Launch Control at T-minus 4 minutes and holding. The countdown has entered the 10-minute built-in hold designed to give a bit of margin to deal with any problems. Also during this time, the final readiness polls of the launch team and members of the Mission Management Team will be performed.

We continue to target a liftoff at 8:09 p.m. EST (0109 UTC) from Space Launch Complex-37 at Cape Canaveral Space Force Station in Florida.

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 Tory Bruno @torybruno 2 мин. назад

All go for terminal count

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Dec 11, 2020 04:00


This is Delta Launch Control at T-minus 4 minutes and holding with five minutes remaining in this built-in hold.

Launch Conductor Scott Barney is reminding all console operators that if a constraint is observed after the L-minus 7 minute readiness poll, the team member shall announce "hold, hold, hold" on the communications loops, identify their station and briefly state the reason for the hold. 

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