Today’s launch attempt has been scrubbed. The launch team is resetting for a launch tomorrow morning.
The fuel tanks of the Delta IV Heavy’s three core boosters will be pressurized and held for two minutes before the fill-and-drain valves are activated to see if they respond as they should. Again, the launch window today remains open until 9:44 a.m. EST.
Cycling the fill and drain valves has shown that the core booster valve for the hydrogen tank is not showing as it should for launch.
All the fill-and-drain valves on the three core boosters will be cycled open and closed to find out whether that solves the problem.
All systems are reported ready for launch at 8:26 a.m. EST.
New Launch Time 8:26 a.m. EST.
While the wind conditions remain red, the launch team has moved Orion back to electrical power from the ground so it can save its batteries for flight.
The launch team is working through options for setting a new liftoff time following the violation of ground wind rules.
The countdown resumed and we are heading for a 7:17 a.m. EST liftoff. The Delta IV Heavy’s safe-and-arm devices are armed. The core stage tanks will be sealed at flight pressures one minute from now as the activity picks up.