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Thread: fan blade clearance

  1. #1
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    Default fan blade clearance

    can anyone help?



    what is a safe (not intrested about hi-performance just dont want things breaking) tip-duct gap and also splitter trailing edge gap.



    the engine,gearbox and fan are all mounted on the same anti vib mounts so the fan has some movement...



    any help appreciated

    dave




  2. #2
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    Default Re: fan blade clearance

    i reckon 10-13mm is a sensible clearance if you're not concerned about peformance, any more and you are throwing air away needlessley



    any system that deflects more than that needs to be more rigid



    splitter gap will benefit from being close, blades will deflect forwards under load and don't spring back noticably during deceleration - a 50mm gap is safe enough again without compromising things dramatically



    this is just my opinion based on my experience others will differ - take what everyone says and then make your own mind up



    good luck



    Tony

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