PPRuNe Forums - View Single Post - AF 447 Search to resume (part2)
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Old 20th May 2011, 15:12
  #1933 (permalink)  
FlightSpanner
 
Join Date: Apr 2010
Location: U.K.
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Don't shoot me for asking (B1, B2 Engineer, non Airbus)

Is it at all possible for there to be a huge change in wind direction over a very short distance within this type of cloud, thinking head to tail wind, and if the probes are iced could this go unnoticed? and result in a real stall?

Also how do probes react to icing up, I know if the calibrated bleed hole blocks it will over read but if the opening becomes iced would the pressure inside remain constant due to sudden blockage or would the pressure decay as the opening gets smaller due to ice build up?

Just how large would the ice particles be? could they enter the pitot, build up and block within the hoses after the heated head?

Sorry if this has been discussed previously, taken me 5 hours to catch up with all the latest posts!

Thanks.
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