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Anti-ice and engine thrust


janjoensson

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Hi!

 

This is a question strictly out of interest, not a support issue. 

 

When on ground taxing the CRJ 700, with wing anti-ice turned off, you need a little bit of throttle power to start moving. However, when turning the wing anti-ice on, the engines spool up a bit and the CRJ moves on idle. Is that how the aircraft behaves also in real life? I think it is very handy, but would be interesting to know if anyone knows why and if this happens also in the real plane. 

 

Best regards

 

Jan

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  • Deputy Sheriffs

Hello Jan,

Yes, this is fairly common behavior with any jet aircraft where the anti-ice system draws bleed air from the engine and directs it to the anti-icing system. Because of this extra bleed air demand for the anti-air system the engines spool up a little on idle settings.

You can read more about Ice & Rain Protection from the documents vol5 Aircraft Operating manual part 2 where you'll find this information from page 82 :)

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