Hammer-driven Typr Penetrator Design And Its Penetrating Performance Research

In-situ exploring technology,a new researching method for outerspace exploring arose at the end of the nineteenth century,is popular for its lower cost,abundant exploratory data and high feasibility.Owing to the advantage of simple structure,minisize,light-weigth and powerful exploring ability,the research on in-situ exploring equipment become the hotspot.For the moment,research on in-situ detection technology for outerspace exploring is in the early development phases at home and abroad,and there is no success case so far.Therefore,further researching on the hammer-driven type penetrator in order to improve its penetrating ability is necessary.By further analyzing the principle of hammer-driven type penetrator,this article proposing method to improve the penetrating performance.By analysising the factors of effect on the penetrating performance to assesse the penetrating performance of the hammer-driven type penetrator.At last,pointing out that the mass matching between the key component and the stiffnes s matching between the forcing spring and the buffering spring(“mass-stifness matching” for short)effect a lot on the penetrating performance.Because the object which interact with the penetrator is discrete particle,and the interacting force and interacting process is extremely complex,in order to simplify the interacting process,studying on mechanical equivalent of the load is necessary.With the static pressure device,studying on the equivalent interact force between the discrete particles and the penetrator in the penetrating process.And providing load characteristic data for further study.With the hammer-driven testbed,matching the driven force with the load characteristic and providing boundary constraint reference of the driven force fo r later analysis.It is important for penetrating performance to match the mass and the stiffness.While the mass-stiffness matching is not properly,the large penetrating power may lead to bad penetrating performance.By analyzing the principle of the penetrator,and building dynamic models and solving the models with numerical method in MATLAB,and finding the perfect relation in mass-stiffness matching.Finally,based on the mass-stiffness matching testbed,the validation for the theoretical analysis was performed.Based on the results of mass-stiffness matching of penetrator,we proposed three feasible structure scheme of the penetrator prototype.After comprehensive evaluation and feasibility analysis we considered that the screw driven escapement scheme is the optimal case.What’s more,we also analyzed the key components and key technology in detail for future reference.Finally,the prototype was build and assembled to verificate the feasibility and assessing its performance,so as to provide reference for in-situ detection device design in outerspace.