Shan Y.-Z.,Harbin Jiancheng Group |
Yin J.,Research Institute on General Development and Argumentation of Equipment of Air Force |
Xu H.-C.,Harbin Jiancheng Group |
Wu Y.-B.,Military Representative Office in 624 Factory |
You Y.-L.,Harbin Jiancheng Group
Dandao Xuebao/Journal of Ballistics | Year: 2012
To study time-sequence impact point dispersion of anti-runway submunitions(ARSM), and to precisely estimate impact point, the motion model and flight time-sequence of ARSM were analyzed. The main factors affecting impact point are initial condition, mechanism error and wind disturbance. The method of combining neural networks and genetic algorithms was designed. The estimating models of impact point dispersion of submunition were established, and the simulation procedure was designed. The simulation results show that the method can effectively describe time-sequence impact point dispersion of ARSM, and accurate pre-estimation can be carried out by this method. The method offers important technical means for the overall design of dispenser.
Luo A.-N.,Harbin Engineering University |
Liu H.-P.,Harbin Engineering University |
Wang Y.-F.,Harbin Engineering University |
Song J.-H.,Harbin Engineering University |
And 3 more authors.
Key Engineering Materials | Year: 2014
There is a wide application for the string-net structure in the areas of architecture and spaceflight. In the area of spaceflight, the string-net structure is mainly used in the deployable antenna. The three-dimensional string-net structure is a kind of typical string-net structures applied on the deployable antenna. Here the string-net structure is analyzed. At first, composition of the string-net structure is presented. Then the dynamical relaxation method is used to obtain the solution for movement of the structure after its instability. At last, using numerical simulation, tensions in the strings are computed. It is proved finally that the three-dimensional string-net structure still possesses the capability of keeping its shape and stiffness after its instability. © 2014 Trans Tech Publications, Switzerland.