TY - JOUR AU - Aslanov, V. S. AU - Ledkov, A. S. PY - 2007 DA - 2007// TI - Features of rotational motion of a spacecraft descending in the Martian atmosphere JO - Cosmic Research SP - 331 EP - 338 VL - 45 IS - 4 AB - Angular motion at atmospheric entry is studied in the paper for a spacecraft with a bi-harmonic moment characteristic. Special attention is given to the case when the spacecraft possesses two stable balanced positions, and, hence, it can oscillate in dense atmospheric layers in the ranges of small or large angles of attack. The averaged equations of spacecraft motion are derived, which allow one to increase the speed of calculations by several orders of magnitude. A real example is presented, which concerns a spacecraft specially designed for descending in the Martian atmosphere. SN - 1608-3075 UR - http://dx.doi.org/10.1134/S0010952507040065 DO - 10.1134/S0010952507040065 ID - Aslanov2007 ER -