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Fuel flow test

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Curt.Thompson(at)verizon.
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Posted: Sat Jun 27, 2009 9:11 pm Post subject: Fuel flow test

Is it common practice to do a fuel flow test before first flight?  I had an article on this somewhere but now I can’t find it.  Basically, it entailed filling the tank with fuel, disconnecting the fuel line at the engine, and measuring the fuel flow.  I think the idea was to make sure that the fuel system would supply fuel at the maximum consumption rate of the engine (times some reserve factor).  This is done with the airframe tilted to represent max and min incline.  This might highlight a venting problem as well.  

   

Curt  

Plans building CH701, working on the controls kit now.  

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John Bolding

Joined: 23 May 2006
Posts: 281

Posted: Sun Jun 28, 2009 3:42 am Post subject: Fuel flow test

Not only is it common practice, it's one of those  things that MUST be done before flight, also it is done at worst case scenario  which is minimum fuel quantity.   After a flow check it's done for  real with the engine at Take Off power  . 

 LO&SLO   John

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