Subjects: Geosciences >> Space Physics submitted time 2016-05-13
Abstract： Concerning requirements for the on-orbit release and separation of nanosatellite-fractionated payloads,a design of the spring-loaded separation system is presented. It is aimed at the problem that the international commercial-off-the-shelf products are inadaptable for the nonstandard ratio of weight and volume. The separation system is able to support 6 U (1 unit = 1 dm~3 volume) and 10 kg payload. Taking into account the design constraints,the plan consists of the central bearing frame,separation mechanisms and the docking ring. Modal and acceleration loading analyses are carried out. Accordingly the on-orbit simultaneous separation process of two opposite ones is presented. Analyses results show that the structural design meets the requirement for launching. The designed plan serves as an effective and applicable solution for the mission.
Peer Review Status:
Awaiting Review
Subjects: Geosciences >> Space Physics submitted time 2016-05-13
Abstract： Springs can be used to provide release rate for payload in space missions. In order to guarantee the precise releasing velocity of payload and the minimum mass of springs,a nonlinear constrained optimization model was built with geometric constraints, reliability and stability. The theory solution of MATLAB was brought into Adams for simulation, which can work out the fitting relationship between theory and simulation. The spring design parameters were obtained by using the fitting relationship and calculation of MATLAB. The result was verified by Virtual Prototype Technology and perfect performance of design parameters was achieved.
Peer Review Status:Awaiting Review
Subjects: Geosciences >> Space Physics submitted time 2016-05-13
Abstract： This paper discussed in detail the relation between the inflation impact load bearing capability and the structural sensitive parameter. Starting from solving tight-coupling characteristics of inflation impact load,and using the computational modeling and numerical simulation method, the model of coupling analysis between the structure and impact airflow was built. By adjusting structural parameters, the response of the canopy structure was analyzed and compared. The simulation result shows that the weak parts of ring slot parachute include the vicinity of radial reinforcing bands,the connection between the canopy and rope and the neighboring region of the top hole. Strengthening measures and the relation between structural sensitive parameters and load bearing capability were discussed accordingly. Research in the paper proves the validity of the simulation method for structural design. Conclusions provide the solid basis for the optimization design.
Peer Review Status:Awaiting Review
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