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Old 5th Mar 2019, 16:37
  #914 (permalink)  
KenV
 
Join Date: Aug 2014
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Originally Posted by BEagle
KenV wrote:

No, the feed to the wing pods would have been adequate using the originally specified wing fuel pipe. But with the HDU supplied simultaneously (not using some 'main feed pipe' - the systems were not interconnected), the pressure drop at the pod using the original pipe would have been unacceptable. Hence a larger bore pipe would have been needed to cater for the situation. Which was a bolleaux idea anyway!
OK. But if the WARP and the HDU are not "interconnected", yet the pressure drops when both are used simultaneously, then somewhere in the system they share a common feed manifold that is not of sufficient size to feed both systems simultaneously while maintaining head pressure to both systems. That means the main feed manifold needs to be enlarged by enlarging the piping or more likely by enlarging the manifold's feed pumps.

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