Method for identifying zero lift resistance coefficient of active section of axisymmetric wing-free and rudder-free missile

• Main Authors: PENG ZHEN, CHEN GANG, MENG XIHUI, LU XUELING, YUE SHUFAN, REN SHUJIE, LU TIANYU
• Format: Patent
• Language: Chinese; English
• Published: 07.02.2020
• Subjects: CALCULATING; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; PHYSICS

The invention provides a method for identifying a zero lift resistance coefficient of an active section of an axisymmetric wing-free and rudder-free missile, which comprises the following steps of: 1,preprocessing measured data, and eliminating abnormal values; 2, preprocessing theoretical data, acquiring mass, chamber pressure and thrust data for each flight test, and performing interpolation encryption processing on the data; 3, obtaining derivation parameters, and obtaining dynamic pressure and Mach number derivation parameters according to the altitude; 4, correcting the flight thrust ofthe missile, and giving an engine thrust correction value in the flight process of the active section of the missile; 5, data interception: intercepting data according to the following two criteria; 6, calculating a zero lift resistance coefficient; 7, carrying out zero lift resistance coefficient smoothing and data table construction; 8, fusing identification results of multiple flight tests; 9,acquiring other data source