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Why two-bladed props?


Mart61
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Posted by David perry 1 on 30/09/2010 15:00:23:
Martin, Its a situation called Emergency Electrical Config.
 
Basically, all electrics have failed and we are on the emergency generator, the Ram Air Turbine (RAT).
 
The significant bits are: no main brakes (so on the reserve reservoir), no auto brake, no nosewheel steering, only two spoilers,  no thrust reversers.
 
The airborne situation is not really catastrophic as the RAT will keep you going on power for a long  while but the landing is the wage earner.
 
Why would I enter EEC? Well, if there was a fire or uncontrolled smoke on board I might have to elect it, generator failure might drop me into it.  On an electric jet its really not where you want to be.
 
As an aside, the RAT is a wind turbine with two blades! 
 
David 

 Well, if I'm in an Airbus when the situation occurs, I hope you're up the sharp end with enough fuel to get to one of those 3 airfields!  Who do you fly for?

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