None of it makes any sense at all.. there's no way one of those covers can stay on during engine startup without a million warning lights going crazy in the cockpit, there's no way the cover could possibly not get ingested during an engine runup.
And this was a carrier takeoff, so the engines would have been held at maximum thrust prior to launching off a catapult and possibly would have been run at afterburner as well. The inlet flow for that would develop far more than 14psi as the volume of air ingested is enormous. The mass of air ingested is measure in tons per second.
I think this is just incompetent journalists. Not that I've ever done pre-flight on an F-35 but there are probably MANY protective covers that have to be removed during preflight.
It most likely was another cover left on which did not impede takeoff but threw the systems for a loop after takeoff and the pilot wasn't well trained enough to figure out an emergency procedure on such short notice.
If it is actually a full inlet cover, there will be _zero_ airflow, so just < 14psi pressure on the cover. (I was just answering how it could avoid being ingested if it was a full cover.)
If it is some other smaller cover on some auxiliary inlet, it might make more sense, as it could definitely screw up the sensors, airflow, whatever, and not get ingested.
I'm sure we'll all be really interested to see what really happened, 'tho I'm not sure we ever will.
I doubt you'd be able to get up to full thrust with the covers on though. If it wouldn't be sucked in and shredded/burned (in which case it wouldn't be seen floating in the sea), it wouldn't be possible to get the amount of airflow you ned to get it up to full thrust for takeoff.
I agree this whole story is conjecture.. And a cover floating in the sea doesn't mean it would have had anything to do with this plane.
And this was a carrier takeoff, so the engines would have been held at maximum thrust prior to launching off a catapult and possibly would have been run at afterburner as well. The inlet flow for that would develop far more than 14psi as the volume of air ingested is enormous. The mass of air ingested is measure in tons per second.
I think this is just incompetent journalists. Not that I've ever done pre-flight on an F-35 but there are probably MANY protective covers that have to be removed during preflight.
It most likely was another cover left on which did not impede takeoff but threw the systems for a loop after takeoff and the pilot wasn't well trained enough to figure out an emergency procedure on such short notice.