Longitudinal guidance method for gliding flight section of hypersonic flight vehicle

• Main Authors: TANG HAIHONG, TIAN HAITAO, BAO WEIMIN, HUANG WANWEI, YU CHUNMEI, YANG YE, MA WEIHUA, QI ZHENQIANG
• Format: Patent
• Language: English
• Published: 24.06.2015
• Subjects: CONTROLLING; PHYSICS; REGULATING; SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES

The invention discloses a longitudinal guidance method for the gliding flight section of a hypersonic flight vehicle. The method includes the steps that in the gliding section flight process, a guidance system generates a standard flight path instruction in real time according to navigation parameters; the guidance system provides a preset attack angle acx0 according to the flight speed or Mach in the standard flight path instruction; an additional attack angle instruction Dacx is calculated according to the path instruction and measured values provided by a navigation system; a current actual attack angle acx is acquired through calculation according to the preset attack angle acx0 and the additional attack angle instruction Dacx. By the adoption of the longitudinal guidance method for the gliding flight section of the hypersonic flight vehicle, the dynamic characteristic of drag acceleration tracking control can be effectively improved, the tracking control accuracy of drag acceleration under the dynamic condition is improved, fluctuation of a flight path is restrained, and the adaptability of the guidance system to deviations, uncertain interference and uncertain conditions is enhanced.