Abstract: In order to study the coning motion of high-speed spin-stabilized projectile during flight, the on-board geomagnetic attitude measurement method is used to build a test model. The angular relation among local magnetic vector, projectile velocity vector and projectile-axis geomagnetic component is analyzed. A test model for the angular movement and parameters of high-speed spin-stabilized projectile is built, an experimental method is proposed. The test platform and the calibration devices are constructed too. The on-board geomagnetic test data is obtained through experiment. Signal filtering and attitude resolving are conducted based on geomagnetic test data. The trajectory curve of projectile coning motion is got. Test results of projectile coning motion is anlyzed,and the laws of projectile precession and nutation motion are obtained. Analysis result shows that the on-board geomagnetic test method and the projectile angular motion model can be used accurately to reveal the coning motion law of high speed spin-stabilized projectile.

Key words: ordnance science and technology, high-speed spin-stabilized projectile, coning motion, geomagnetic test, on-board test, gyroscopic effect