Abstract: An analytical initial orbit determination method using two radar position and radial velocity observations is presented. The specific angular momentum conservation equation and the specific ...

Abstract: To solve the time-optimal problem of velocity planning, various optimization-based methods were proposed in the literature, but these existing methods typically have limitations on ...

Liquid composite armor has demonstrated excellent performance in protecting against shaped charge jets. Currently, most existing theoretical calculation models for the velocity range of the disturbed ...

Authorities searching for a 7-month-old boy who was reportedly kidnapped outside a California store said that his mother has provided inconsistent statements and that foul play cannot be ruled out.