| 摘要 |
FIELD: bombing, in particular, calculation of the bomb trajectory parameters. SUBSTANCE: the bomb drag law (B) is approximated by the fragment-linear function. The process of the B fall is divided by a number of successive sections of the preset duration dTi beginning at the preset moments of time Ti and ending at the moments of time Tki=Ti+dTi. The H(Ti) values of B flight altitude, V(Tc) modulus of the B velocity vector, orientation angle Theta(Ti) of this vector and distance X(Ti) in the horizontal plane between B and the point of its drop at the beginning of the i-th section are taken to be equal to the values of these parameters at the end of the previous section. In each section the dependence of air density (R)m is approximated by linear function Ri(H(Ti),r), which depends on present time r in this section. The dependence of modulus V of the B velocity vector is preset by linear function Vi(V(Ti),dVi,r), which depends on variation of dVi of B velocity on this section. When these dependences are used, analytical solution of the system of differential equations of B movement on this section is obtained in the form of polynomials in r, with the use of which the parameters of the bomb trajectory on this section are calculated. This algorithm is used successively for all sections, and the values of the parameters of the bomb trajectory at the impact with the ground are calculated. EFFECT: facilitated procedure. 3 dwg |
