Effective fuel system is invented to have reduced number of components and piping by introducing innovative components and ideas to reduce cost and weight of the system without sacrificing any of the operational and maintenance performances and emergency redundancies in meeting requirements for military trainer aircrafts with dihedral wing tanks. Continuous fuel feed at required pressure is ensured to the engine from the fuel system at all maneuovers including inverted flying. In addition, system is featured with single point refueling, automatic wing tank imbalance correction, simplified venting.
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