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Old 3rd May 2009 | 09:50
  #756 (permalink)  
Dani
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From: Switzerland, Singapore
Selfweighting aircraft vs acceleration meter

It has been mentioned some pages before about technological solutions to avoid accident like these, mainly selfweighting aircraft on gear strut or treshold markers on the runway.

Much more easier would be an acceleration meter on board. I learned recently that some business jets are already equipped with it.

The sensors are already on board, the IRS's. Some warning computer would compare actual acceleration vs. requested. You basically don't need any indication in the cockpit. Just give them an amber or red Acceleration Warning on the ECAM/Eicas. The warning would appear relatively early, depending on the size of the power setting error, at low speed, and standard policy would be to reject the take-off.

I guess that some bright engineer have already thought about it (otherwise it wouldn't be available), but manufactors of big airliners have decided against it, most probably not enough damage avoidance per unit's cost. This might change after this accident...

Dani
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