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Delta IV Heavy

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Why is ULA retiring the Delta IV Heavy?

Later today we expect to see the Delta IV launch its final mission. About two weeks ago ULA was forced to scrub its last attempt after issues with a pumping system arose in the final minutes of the countdown. A question I’ve seen popping up in a few groups was “Why is ULA retiring the Delta IV?” It’s a valid question, the large capable rocket seems like it should have a long life ahead still but alas, ULA has other plans.

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This Week In Launches: It’s Delta IV Heavy launch week again!

We have an exciting week ahead with a rocket launch we don’t get to see often (and I will miss it). This week, ULA plans to launch its second to last Delta IV Heavy rocket from Cape Canaveral for the National Reconnaissance Office. Not to be forgotten about, SpaceX will be on deck with two launches of Starlink satellites this week.

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[Update: Launched] ULA’s first mission and debut of California launches for 2021

ULA’s next mission and first of 2021, NROL-82 is a classified payload for the National Reconnaissance Office and is launching on top of the large Delta IV Heavy rocket. This will end up being the first launch from Vandenberg Air Force Base, the prime spaceport for polar launches.

Date: Monday, April 26, 4:47 PM EDT

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Spy satellite no longer stuck on Earth? ULA sets new date for Delta IV Heavy and NROL-44 mission [U]

Update: December 10, 2020: Livestream for tonight’s launch is now available. Liftoff is scheduled for 8:09 p.m. EST.

United Launch Alliance has released a new target date for the NROL-44 mission using its massive Delta IV Heavy rocket. The classified mission for the U.S. National Reconnoissance Office Laboratory was originally set for August 26, but multiple failures to launch for various reasons took the launch off the calendar.

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