Modeling And Simulation Of Pressure Control For Stratospheric Platform Airship

As an age-old aircraft, airship has enabled human to travel in the air even before the birth of the plane. However, with the wrecking of the German airship""when landing on America, airship has quit the historical stage ever since. Still, it has once more attracted the attention of the scientists as a low energy-consuming aircraft in today's world with the increasingly fierce energy crisis and the rapid progress of science and technology.Modern airship can be universally applied in transportation and construction, while serving as a communication platform of stratosphere. Many overseas aircraft manufacturing companies vie with one another to develop various kinds of new airships at high costs, thus endowing this aerotechnics which has slumped for years with dazzling vitality.Under this background, pressure control for stratospheric platform airship was studied in this paper. The atmospheric model was established for the super pressure control of stratospheric airships and the pressure model for the airship longitudinal movement and control is also presented. On this basis, the model was isomorphic transformed to facilitate the computer numerical simulation and the corresponding simulation model was established. Based on Creator/Vega, a three-dimension realistic display system was realized under VC6.0 and by means of experiment, feasible control strategies for different run phases of the airship were formulated. Ideal results were got, which serve to show that the models established were effective.With this simulation model, various control strategies can be implemented and the system design period can be effectively shortened. The simulation system established can assist in the structural design of the airship and provide an experiment platform for the formulation of the control strategies in the process of blastoff, fixed-point and recovery of the airship. Results of the simulation have not only supported the design of the pressure control strategies for the self-dependent airship, but also provided a solid foundation for the further study on the attitude control of the airship during its whole flight.