Well it's already ducted into the after part of the nozzle to provide cooling.
Probably discussed many times but I can't find it: is there any likelihood that sea level Merlin will burn redirected turbo pump exhaust in future?
Quote from: alang on 08/15/2016 08:00 amProbably discussed many times but I can't find it: is there any likelihood that sea level Merlin will burn redirected turbo pump exhaust in future?I think I read somewhere that the actual turbopump exhausts pay a role (due to their position and use) on some aspects of the octaweb assembly performance.
Quote from: jimvela on 08/14/2016 02:11 amQuote from: the_other_Doug on 08/14/2016 01:42 amIt's not like it hasn't already been done -- sort of.I wish I could recall exactly which mission it was, but I recall quite well an occurrence where the Falcon 9 engines started up, then shut down just prior to the hold-downs coming off. After a short analysis and quick fix, the count was recycled and the launch proceeded that night (IIRC), late but still within the launch window.I believe the F9 sequence you are describing was prior to subcooled LOX... Yes, I'm positive it was. I'm also pretty sure it was a Falcon 9 v1.1, prior to the current FT version that, we are told, should just be called Falcon 9... Anyone remember which mission it was? I'm pretty certain it wasn't a CRS flight, they have very short launch windows. Maybe Cassiopeia? It was definitely pre-stage-recovery days.
Quote from: the_other_Doug on 08/14/2016 01:42 amIt's not like it hasn't already been done -- sort of.I wish I could recall exactly which mission it was, but I recall quite well an occurrence where the Falcon 9 engines started up, then shut down just prior to the hold-downs coming off. After a short analysis and quick fix, the count was recycled and the launch proceeded that night (IIRC), late but still within the launch window.I believe the F9 sequence you are describing was prior to subcooled LOX...
It's not like it hasn't already been done -- sort of.I wish I could recall exactly which mission it was, but I recall quite well an occurrence where the Falcon 9 engines started up, then shut down just prior to the hold-downs coming off. After a short analysis and quick fix, the count was recycled and the launch proceeded that night (IIRC), late but still within the launch window.