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Old 27th Sep 2008, 10:45
  #2018 (permalink)  
Swedish Steve
 
Join Date: Apr 2005
Location: Stockholm Sweden
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Wouldn't it be better/safer to deactivate the TOWS - exactly like the aviation relevant systems - by activating a relais?! Better a warning signal too much than missing one.
very good point. I thought of this a few days ago when the circuit was published. Why have a relay activate RAT heating and deactivate TOWS. They should be split so that the realy goes to the correct phase when it fails. i.e. when relaxed it should give RAT heating and TOWS active.

I suspect along with other sensors, wheel-truck tilt on the B777 is used for air/ground sensing.
Stop suspecting because you suspect wrong.
The B777 uses a strain gauge in the undercarriage support beam to detect weight on wheels.
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