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The results may be improved if the area or the length of the actuator is increased. Friction between actuator and airship envelope material has a negative impact on the deflection and can be partially overcome by adding several layers to the actuator. More tests with 4-5 layers should be carried out on the inflatable segment. Without the effect of friction, several layers do not improve the deflection of the segment, therefore separating actuator and envelope instead of adding several layers is another possibility to achieve larger deflection angles. Buoyancy is a very critical factor in a model airship and the solution that will lead to less additional weight will have to be chosen. With an improved fabrication process the reproducibility (prestrain, etc) could be guaranteed and thus the performance of the actuators improved. The scaling to the large airship may have a positive effect on the performance (friction, boundary effects, etc). In the coming months a full-scale active airship will be designed and manufactured and these aspects may be examined experimentally. Moreover it can be concluded that a minimum internal pressure must be guaranteed while too much internal pressure has no negative influence on the deflection angle with the current design of the passive segment structure. Even if the exact continuous motion of the rainbow trout cannot be mimicked, propulsion of the airship with discrete hinges will still be possible. Bending the body even with smaller angles might still reduce the drag coefficient as opposed to a completely stiff body with a flapping tail fin.