United Launch Alliance returns to certainly one of its two foremost pads at Cape Canaveral Air Pressure Station Wednesday to attempt to break a string of current launch scrubs as a consequence of varied points, principally associated to floor programs.

The corporate’s Atlas V rocket is scheduled to liftoff from House Launch Advanced-41 at 5:54pm EST (22:54 UTC), carrying a satellite tv for pc for the Nationwide Reconnaissance Workplace. The mission is known as NROL-101, and its ultimate orbit is classed. There’s a 70-percent likelihood of favorable circumstances.

The venerable Atlas V rocket, which has flown 85 missions since its debut in 2002, can be testing new {hardware} with this flight. For the primary time, the Atlas V will use solid-rocket boosters constructed by Northrop Grumman moderately than Aerojet Rocketdyne. These GEM-63 boosters price lower than the booster beforehand used. United Launch Alliance plans to make use of an prolonged model of this booster, the GEM-63L, on its Vulcan rocket, which might make its first flight in a 12 months or so.

Maybe the largest query heading into in the present day’s launch try is whether or not the Atlas V rocket will get off the bottom. This mission was initially scheduled to launch on Tuesday, however after a rollout on Monday, the corporate found an issue with an environmental management system duct. This may increasingly have been broken throughout excessive winds on the launch web site on Monday. After being rolled again into its hangar, the place the duct was swapped out, the Atlas V rocket rolled again to the pad on Tuesday.

Thus far, so good—as of Wednesday morning the corporate says every thing is on observe for an Atlas V liftoff later within the day.

United Launch Alliance might do with a profitable liftoff. It has been a tough couple of months as the corporate has struggled to launch one other mission for the Nationwide Reconnaissance Workplace, an necessary buyer that pays a premium to get its high-dollar satellites into area.

This NROL-44 mission, as a consequence of launch on a Delta IV Heavy rocket on a close-by pad, has scrubbed half a dozen occasions since late August. Most of those scrubs had been as a consequence of points with floor assist tools and sometimes occurred inside seconds of the deliberate liftoff time. This has raised questions on getting older infrastructure on the Delta launch web site in Florida. A brand new launch date has not but been set for the mission, which the US authorities had hoped to loft into area in June.

The corporate’s webcast for in the present day’s launch ought to start about 20 minutes earlier than liftoff.

NROL-101 mission.

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