Modeling of stratosphere airship
The dynamics and kinematics model is very important for the analysis of stability, manipulation and control of stratosphere airship. A full modeling approach that includes the computation of aerodynamics of airship and the added mass for the nonlinear dynamics simulation of stratosphere airships is proposed in this paper. In this approach, the aerodynamics of airship is calculated based on a panel method, an engineering estimation and theory approach. A new numerical method for calculating added masses of airship is developed by using the CFD method. This model can simulate the motion of stratosphere airships quickly and accurately.
The anti-windup controller design for multi-propeller aerostat based on nested saturation function
This paper proposes two methods to describe the actuator amplitude and rate constraints with nested saturation function. The dynamic model of aerostat in the horizontal plane is established, and then the three order nested saturation controller is designed based on the nested saturation function. And as a result, the amplitude and rate of the actuator output are limited by the amplitude constraints of the nested function and the effectiveness of the control law is verified by simulation. The control quality is guaranteed by the state feedback controller. The advantage of the method is that the controller is simple and has strong ability to suppress disturbance.
Women and fascism
This seminal book challenges the common assumption that fascism is a misogynist movement which has tended to exclude women. Using examples from Germany, Italy and France, Durham analyses the rise of women in fascist organizations across Europe from the early twenties to the present. Unusually, however, the author focuses on British fascism and in doing so he offers valuable new perspectives on fascist attitudes to women. Offering interesting examples of women training in armed combat, and more generally as voters and members of fascist organizations, he highlights women's relationship to fascist policies on birth rate, abortion and eugenics.