To solve the problems of high functional requirement, complex structure and poor versatility manned spacecraft power supply distribution ground test equipment, a modular universal system (PSS) is designed. The functions cover wire instruction opening, parameter measurement state detection interface between realize extensible configuration. This paper provides general architecture design method ...

Abstract Origami is a traditional art form of paper folding that originated in east Asia. In recent decades, the concept origami has been extensively used to design deployable structures. Due strict space and load capacity limitations aircraft spacecraft, equipment they carried must be light weight. The origami-based structures provide possibility for carrying more aerospace equipment. This an ...

Two robust nonlinear controllers along with a nonlinear observer have been developed in this study to control a 1D nonlinear flexible spacecraft. The first controller is based on dynamic inversion, while the second one is composed of dynamic inversion and µ-synthesis controllers. The extension of dynamic inversion approach to flexible spacecraft is impeded by the non-minimum phase characteristi...

It has been suggested that a manned mission to Mars be launched at solar maximum rather than at solar minimum to minimize the radiation exposure to galactic cosmic rays. It is true that the number of hits from highly ionizing particles to critical regions in the brain will be less at solar maximum, and it is of interest to estimate how much less. We present here calculations for several sites w...

Preface I This is the first issue of a new series of bimonthly progress reports describing work performed for the JPL/NASA Deep Space Network (DSN). Current work for the DSN was previously reported in Volume I1 of the now retired Space Programs Summary series of Laboratory bimonthly publications. The new report series is an uninterrupted follow-on to the Space Programs Summary, Volume 11. This ...

Formation control ideas for multiple spacecraft using the virtual structure approach are presented. If there is no formation feedback from the spacecraft to the virtual structure, the spacecraft will get out of formation when the virtual structure moves too fast for the spacecraft to track due to spacecraft control saturation or the total system must sacrifice convergence speed in order to keep...

A Space Free-Flying Robot (SFFR) includes an actuated base equipped with one or more manipulators to perform on-orbit missions. Distinct from fixed-based manipulators, the spacecraft (base) of a SFFR responds to dynamic reaction forces due to manipulator motions. In order to control such a system, it is essential to consider the dynamic coupling between the manipulators and the base. Explicit d...