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Wang Z.,Beijing Institute of Technology | Liu Z.,Beijing Institute of Technology | Fan N.,Beijing Institute of Technology | Guo M.,North Institute for Science and Technical Information
Chinese Journal of Aeronautics | Year: 2013

This paper presents a simple and useful modeling method to acquire a dynamics model of an aerial vehicle containing unknown parameters using mechanism modeling, and then to design different identification experiments to identify the parameters based on the sources and features of its unknown parameters. Based on the mathematical model of the aerial vehicle acquired by modeling and identification, a design for the structural parameters of the attitude control system is carried out, and the results of the attitude control flaps are verified by simulation experiments and flight tests of the aerial vehicle. Results of the mathematical simulation and flight tests show that the mathematical model acquired using parameter identification is comparatively accurate and of clear mechanics, and can be used as the reference and basis for the structural design. © 2013 Production and hosting by Elsevier Ltd. on behalf of CSAA and BUAA. Source


Peng C.-Z.,North Institute for Science and Technical Information | Zheng B.,North Institute for Science and Technical Information | Zhang P.,North Institute for Science and Technical Information | Fan X.-P.,North Institute for Science and Technical Information | Ren X.-X.,North Institute for Science and Technical Information
Huozhayao Xuebao/Chinese Journal of Explosives and Propellants | Year: 2014

On the basis of collecting and investigating a great deal of the foreign development present situation and latest trends of ammonium dinitramide (ADN), the synthesis and preparation technology, prilling process, application research and latest progress of ADN were reviewed. The technical way for solving the hydroscopicity of ADN and high-performance ADN-based propellant formulations were analyzed. The future development of ADN should be paid attention to followings: novel crystal prilling process and after-treatment process have been the key factors of improving the application performance and expanding the production scale of ADN. Developing efficient synthesis routes and enhancing production scale are the important means to decrease the cost of ADN. The constraint of hygroscopicity to the application of ADN should be solved with 18 references. Source


Peng C.-Z.,North Institute for Science and Technical Information | Fan X.-P.,North Institute for Science and Technical Information | Ren X.-X.,North Institute for Science and Technical Information | Zhang P.,North Institute for Science and Technical Information | And 2 more authors.
Huozhayao Xuebao/Chinese Journal of Explosives and Propellants | Year: 2013

The major developments of new melt-cast explosive, green and safe manufacturing process of propellants and explosives, nitrogen-rich compouds, advanced charge technology of gun propellant and new concepts and new technology of propellants, and explosives were reviewed. Based on the developments of above, five recent trends in area of propellants and explosives were summarized and presented as follows: insensitive melt-cast explosive based on DNAN began to applied in US army, synthesis and manufacturing process technology of CL-20 was vigorous developing, research of nitrogen-rich compound synthesis was evolved rapidly, advanced layered propellant technology gradually reached maturity and would turned into application, as well as new concept and new technology of propellants and explosives achieved encouraging results with 23 conferences. Source

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