August 3, 200322 yr hi,I'm trying to model the fuel tank system for a dc-9-41.left main -> to left engineright main -> to right enginecenter -> transfers to left & rightaux -> transfers to centerThere are two pumps in each tank. They are set in parallel in the main tanks and in serial in the center. In this way the center tank fuel will always be tranferred into the main tanks. The auxiliary tank pumps will start to operate when the center tank qantity is below 900Kg with the switches set to ON...How do I model this?
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