Eurofighter vs. F15

[TracerX]

Is this another way to describe over-steering?  Sounds like what happens to lots of people when driving on wet/snow covered roads.

[Cobra412]

Slinger from what I gathered on that last incident the aircrew ran the preflight BIT on the AFCS. He did as any crew would do during prelaunch procedures. Now why the rate sensors didn't fail during this test is odd.

On the F-15E if the rate gyros have a power interrupt the will virtually stop then spin back up. Typically if the aircrew tries to reaccomplish a BIT during this power interruption the rate gyros will fail. They have to wait approximately 2 minutes before they can rerun the BIT. If they don't wait the system will fail for the sensors since they are still spinning back up to speed. On the F-15E a failure from one of these sensors is considered a total no go of the AFCS. The resulting failure of the gyros will not allow their CAS to reengage which is a clear indication of a problem.

[Gunslinger]

Originally posted by Cobra412
Slinger from what I gathered on that last incident the aircrew ran the preflight BIT on the AFCS. He did as any crew would do during prelaunch procedures. Now why the rate sensors didn't fail during this test is odd.

On the F-15E if the rate gyros have a power interrupt the will virtually stop then spin back up. Typically if the aircrew tries to reaccomplish a BIT during this power interruption the rate gyros will fail. They have to wait approximately 2 minutes before they can rerun the BIT. If they don't wait the system will fail for the sensors since they are still spinning back up to speed. On the F-15E a failure from one of these sensors is considered a total no go of the AFCS. The resulting failure of the gyros will not allow their CAS to reengage which is a clear indication of a problem.

what I read was that he crashed the computers (speaking in lamens of course) they had to shut the engines off and run Aux power on the jet.  By doing so it screwed up the computers because he didn't reset them.  

F/A-22 – Raptor 4003, one of the early aircraft assigned to the development test fleet at Edwards AFB, California.