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Full-Text Articles in Aerospace Engineering
Space Settlements, Property Rights, And International Law: Could A Lunar Settlement Claim The Lunar Real Estate It Needs To Survive?, Alan Wasser, Douglas Jobes
Space Settlements, Property Rights, And International Law: Could A Lunar Settlement Claim The Lunar Real Estate It Needs To Survive?, Alan Wasser, Douglas Jobes
Alan Wasser
The settlement of space and the expansion of the habitat of humanity beyond Earth will benefit all mankind but will be astronomically expensive. Private enterprise would do it if there were a sufficient profit potential, something only Lunar and Martian real estate is valuable enough to provide. Utilization of this tremendous potential value as an incentive has been prevented by the mistaken assumption that the 1967 Outer Space Treaty's prohibition of "national appropriation" and requirement of national supervision of private activities prohibit private property in space. This paper attempts to demonstrate, by expert legal consensus, that the 1967 Outer Space …
An Improved Robust Projection Identification Algorithm To Manned Maneuvering Units, Bin Xu
An Improved Robust Projection Identification Algorithm To Manned Maneuvering Units, Bin Xu
Bin Xu
空间载人机动装置(MMU )在进行救援过程中, 其动力学参数存在很大的不确定性。为解决这一辨识问题, 本文首先推导系统关于各动力学参数的线性化模型, 然后结合该线性模型的特点, 提出了一种用于估计动力学参数的改进鲁棒投影算法, 并在理论上分析了该算法的收敛性质, 数字仿真验证了方法的有效性。
Pid Parameter Optimization Of An Uav Longitudinal Flight Control System, Kamran Turkoglu, Ugur Ozdemir, Melike Nikbay, Elbrous M. Jafarov
Pid Parameter Optimization Of An Uav Longitudinal Flight Control System, Kamran Turkoglu, Ugur Ozdemir, Melike Nikbay, Elbrous M. Jafarov
Kamran Turkoglu
In this paper, an automatic control system design based on Integral Squared Error (ISE) parameter optimization technique has been implemented on longitudinal flight dynamics of an UAV. It has been aimed to minimize the error function between the reference signal and the output of the plant. In the following parts, objective function has been defined with respect to error dynamics. An unconstrained optimization problem has been solved analytically by using necessary and sufficient conditions of optimality, optimum PID parameters have been obtained and implemented in control system dynamics.