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ULA discovers cause of dramatic Delta IV heavy launch scrub; Targeting new date

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The United Launch Alliance teams have determined the cause behind the dramatic, last second abortion of the Delta IV heavy rocket, setting the stage for another attempt before next week, News6 partner Florida Today reports.

ULA CEO Tori Bruno said on Twitter on Wednesday that a torn diaphragm in one of the three pressure regulators in the launch complex 37 of the Cape Canaveral Air Force Station caused a computer – controlled scrub three seconds before the liftoff on August 29. The engines burned briefly, but the rocket pads remained firm.

“Torn diaphragm (in regulator), this can happen over time” Bruno said. “The condition of the other two regulators is being checked. We will replace or rebuild as needed, try again and then restart to launch. ”

He said the teams are targeting ahead of Friday, September 18th. The exact time has not yet been released.

If the timeline is possessed, it will actually be marked Third attempt at Delta IV Heavy To launch a secret intelligence collection satellite for the National Intelligence Office known as NROL-44. The first launch was scrubbed on August 27 due to a pneumatics problem with the ground support equipment.

Elsewhere in the East Row, Delta IV Heavy is temporarily targeting SpaceX 12 hours earlier – so next Thursday afternoon – for the next mission from the Kennedy Space Center’s Pad 39A. The 13th batch of Falcon 9 aircraft will launch about 60 Starlink Internet satellites into orbit and see the first stage landing of a drone ship in the Atlantic Ocean.

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