Tag Archives: launch abort

The Antares launch was scrubbed at T-12 minutes because one of the the umbilical lines separated prematurely.

The Antares launch was scrubbed at T-12 minutes because one of the umbilical lines to the rocket separated prematurely.

Update: in a press release Orbital Sciences now says they’ve set the tentative new launch date as no earlier than April 19.

SpaceX has reported that they have found the cause of the Falcon 9 launch abort this morning.

In an email update, SpaceX reports that they have found the cause of the Falcon 9 launch abort this morning.

During rigorous inspections of the engine, SpaceX engineers discovered a faulty check valve on the Merlin engine. We are now in the process of replacing the failed valve. Those repairs should be complete tonight. We will continue to review data on Sunday. If things look good, we will be ready to attempt to launch on Tuesday, May 22nd at 3:44 AM Eastern.

If this is true, than this entire exercise is an unqualified success and illustrates a certain robustness to SpaceX’s engineering on Falcon 9. Their control computer during the launch process spotted the problem before it caused a complete loss of the vehicle and payload. They can now locate the problem, fix it, and proceed with launch.

Falcon 9 aborted its launch tonight at 4:55 am (Eastern) at T minus zero seconds.

No go: Falcon 9 aborted its launch tonight at 4:55 am (Eastern) at T minus zero seconds.

Just after ignition there was a shutdown. They were able to make the vehicle safe, and are trying to figure out what happened. It appears there was a high pressure reading in one engine.

The next opportunity to launch is three days hence, though whether they will go for it then depends on whether they can figure out what caused the shutdown.

Update: More details here.