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by londons_explore 1207 days ago
True, but the spool up rate and thrust produced during spool up is all predictable.

Basically, I'm saying the plane should have an internal mathematical model of what it expects to happen, and anytime that sufficiently differs from reality, it should trigger an abort - especially if you're still on the ground at the time!
2 comments
m2fkxy 1207 days ago
This parameter is displayed on some aircraft, notably French (Mirage 2000 & Rafale) which display the longitudinal acceleration (labelled Jx) in the headup display. Part of the takeoff procedure for the pilot is to confirm the Jx is nominal with regards to the takeoff parameters (loadout, density altitude, etc.).
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msrenee 1207 days ago
Hopefully you mean tell the pilots to abort and not start the process itself. What if there's something on the runway or the runway is too short or slick for the plane to decelerate? There's differences between conditions and runways that would have to be accounted for and then you'd have to add a lot more capabilities to the plane's sensors for every other possible issue.

It's often a judgement call when things don't happen quite right and I don't think our technology is anywhere near ready to hand the abort process over to the plane's programming.

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