A Methodology for the Development of Fire Control Equations for Guns and Rockets Fired from Aircraft
ARMY BALLISTIC RESEARCH LAB ABERDEEN PROVING GROUND MD
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The accurate firing of unguided projectiles bullets or rockets from aircraft leads to a requirement for rapid computation of the launch vector needed to assure the projectiles striking a given target. The computation of this laying vector and fuze time is the function of the on-board fire control system. The fire control system includes sensors which measure target range and velocity, aircraft attitude, position and velocity, and atmospheric conditions. These measurements are fed to an on-board fire control computer which in real time, typically at 50 Hz, must compute anew the laying vector appropriate for the rapidly varying variables which influence the ballistic trajectory. Six- degree-of-freedom models, which are normally used in laboratory ballistic modeling and simulation, are computationally too slow and otherwise cumbersome to be implemented for real time fire control. A methodology for developing an alternative simplified, yet very accurate, model is described in detail.
- Fire Control and Bombing Systems