PPRuNe Forums - View Single Post - Air Asia Indonesia Lost Contact from Surabaya to Singapore
Old 28th Jan 2015, 14:44
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SAMPUBLIUS
 
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Question RE inertial data

So if the nose is more or less level and thrust has not been increased, why on earth should it think it has started to overspeed in the space of 2 or 3 seconds?
Seems to me some sort of ongoing comparison between flight computer responding to various sensors (AOA, Airspeed, etc ) and an Inertial reference system would immediately reveal such a difference.

And while one cannot fly for long using an inertial reference system due to lack of true airspeed data, the few seconds with a large delta between the systems could trigger a simple warning. YO dude- Garbage in- Garbage out !!

A body in space cannot change in any direction without some sort of acceleration/deceleration vector as measured by precision accelerometer /gyroscopes. So why isn't such info used ?? In days of yore- it was a simple gyroscope to determine attitude , etc and a pendulum device/equivalent to determine certain vector accelerations.. . .
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