Mathematical Modeling of Refueling Restrictions of Aircraft Wing Tank

Refueling operation of the aircraft fuel tanks has some limitations. One of the limitations is refueling time which restricts refueling duration for entire tank. Other one is overfilling situations which are also possible because of the wave damper designs in tank such as barriers and baffles resist against fuel creeping towards all sides of tank. Required refueling duration restricts refueling speed at a certain minimum value. On the other hand, baffle design restricts refueling speed at a certain maximum value. It should be the mathematical region between these two extremum points where the refueling mass flow rate can be defined. Minimum mass flow rate point can be adjusted with defining of mass flow rate depends of requirements easily but upper extremum point should be defined depends on design of baffles. It can only be changed with altering the design of interior wing tank. In that paper mathematical model of the tank interior volumes and its components are established in order to simulate refueling operations with sufficient baffle cutout designs and also sufficient refueling duration. Usage of Catia script files help the simulation about initial geometrical values with scanning CAD model of wing tank interior volume. After gaining initial function and values, MATLAB Simulink program is main script editor and model creator for calculating iterations. After calculations it can be gain possible cutout diameter and location parameters which are eligible both refuel required duration and overfilling criteria. In this paper efficient cutout set and baffle design is generated with this script set and iterative methods.