Dynamic attack angle amplitude limiting method for reducing missile body overload when aerodynamic configuration changes

• Main Authors: MA XINPU, JIANG JINLONG, YAN ZUMING
• Format: Patent
• Language: English
• Published: 06.01.2016
• Subjects: CONTROLLING; PHYSICS; REGULATING; SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES

The invention discloses a dynamic attack angle amplitude limiting method for reducing missile body overload when aerodynamic configuration changes. The method dynamically limits the amplitude the attack angle of the missile in order to reduce missile body overload when aerodynamic configuration changes. The method for dynamically limiting the amplitude of the attack angle of the missile comprises: S1, computing a maximum attack angle amplitude value of the missile in a before-separation stable process and a after-separation stable process and a maximum attack angle amplitude value of the missile when aerodynamic configuration changes, and variation ranges of the attack angle and the flight speed of the missile; S2, determining a attack angle limiting amplitude function varying with the flight speed of the missile; S3, determining a function relationship between a maximum lift coefficient, attack angle limiting amplitude value, and the flight speed; and S4, acquiring the reference area and the mass of the missile, the flight dynamic pressure, the flight speed, and the trajectory inclination angle of the missile at the current time so as to determine the upper limit value and the lower limit value of a overload amplitude limiter at a current time. The method may determine an optimum attack angle limiting amplitude value according to the real-time flight state of the missile and reduce missile body overload when aerodynamic configuration changes.