- #Kerbal space program controls not responding install#
- #Kerbal space program controls not responding full#
The engine controller units (ECU) are the major component that was upgraded between use of the formerly-named Space Shuttle Main Engines (SSME) on the final Space Shuttle launches and adaptation of the SSME Block II design for use on SLS as the RS-25. The dual channels on all four controller units powered up successfully on November 12 during other checkout testing prior to the failure on the 23rd. All other CSE CSECs were successfully powered on.” “Each contains two redundant channels labeled Channel-A and Channel-B. “During this event Channel-B failed to respond to application of power,” an early December agency status report noted.
#Kerbal space program controls not responding full#
All four controllers were being powered up for Program Specific Engineering Testing (PSET) on the SLS Core Stage, which is stacked with the full Artemis 1 vehicle in High Bay 3 of the Vehicle Assembly Building (VAB) at the Kennedy Space Center (KSC) in Florida. One of the dual digital computer units (DCU) in the engine controller for the number four RS-25, Engine 2060, stopped responding beginning on November 23. The controller for engine four in the right foreground is the one that began failing to consistently power up in late November during pre-launch testing it will be removed and replaced over the next few weeks.) As highlighted, access to the controllers can be seen from the bottom of the Core Stage for engine three (left foreground) and engine four (right foreground). (Photo Caption: The engine controller units for two of the RS-25 engines installed in the Artemis 1 Core Stage are highlighted in this image taken in November, 2019, when the engines were originally installed. Both the March and April launch periods have “cutouts” for Orion eclipse constraints. The March launch opportunity is now the soonest that Artemis 1 could launch Launch Period 19 runs from March 12 through March 27.įollowing that, Launch Period 20 opens on April 8 and runs through April 23.
“NASA is developing a plan and updated schedule to replace the engine controller while continuing integrated testing and reviewing launch opportunities in March and April,” a December 17 Artemis blog entry said. Although some pre-launch preparations continued around the problem and troubleshooting, the issue has delayed final preparations to roll the vehicle out to the launch pad and pushed readiness to launch outside of a two-week period of opportunity in the second half of February.
#Kerbal space program controls not responding install#
The issue first occurred in late November after four weeks of troubleshooting, NASA decided to replace the controller, which will take place over the next few weeks.Īn updated forecast of when the Artemis 1 hardware will be ready to launch will depend on how long it takes to install a spare engine controller and fully resolve the problem.Įngine controller replacement uncertaintyĪfter four weeks of troubleshooting, NASA announced its decision to remove an engine controller from one of the four RS-25 engines on the SLS Core Stage and replace it with a spare unit. The latest delay was caused at least in part by efforts to resolve a problem with an RS-25 engine controller on the rocket’s Core Stage. Artemis 1 will be the first launch of the agency’s Space Launch System (SLS) rocket, which will send an uncrewed Orion spacecraft to the Moon.
On December 17, NASA announced a delay of the launch of the Artemis 1 mission until no earlier than March 2022.
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