Advanced SearchSearch Tips
A Computation Method for Time of Flight in the Anti-Aircraft Gun Fire Control System
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
 Title & Authors
A Computation Method for Time of Flight in the Anti-Aircraft Gun Fire Control System
Kim, Jaehun; Kim, Euiwhan; Yu, Sukjin; Kim, Sungho;
  PDF(new window)
In AAGFCS the effective range is regarded as a range for the bullet's speed exceeding the speed of sound to damage the stationary target. Hence the real engagement range might be extended over the effective range for the approaching target since bullet's relative speed to the target increases depending on the approaching speed. However previous TOF equations have good computation accuracy within the effective range only, and they can not be used above that range due to their bad accuracy. We propose an accurate TOF computation method which can be used both within and above the effective range in real time. Some simulation results are shown to demonstrate usefulness of our algorithm for the 30mm projectile.
Point Mass Differential Equation;Closed Form Ballistic Solution;Equivalent Air Density;Time of Flight;Real Time Processing;
 Cited by
F. V. Johnson, et. al., "Formulation of An Advanced Anti- Aircraft Gun Director," GEC, 1973.

Sungho Kim, "Derivation of Effective ballistic function using linear multiple regression," ADD, 1981.

Jaehun Kim, "Real time processing ballistic algorithm for small Battleship Fire conrtol system (CESD-519-92155)," ADD, Mar., 1992.

M. S. Ganagi, et. al., "Approximate Closed-Form Solution for Projectile Trajectory and its Application to Lead Angle Computations," Defense Science Journal, Vol.49, No.3, July pp.179-186. Jul., 1999. crossref(new window)

Paul Weinacht, et. al., "Analytical Predictiion of Trajectories for High-Velocity Direct-Fire Munitions," ARL, 2005.

Kang Park, et. al., "A study on the Bullet Trajectory for the Anti-aircraft Gun," in Proceedings of 2012 KCC, Vol.39, 2012.

George Klimi, "Exterior Ballistics," X librarys LLC, 2014.

Herrmann, "Exterior Ballistics," U. S. Naval Institute, 1935.

Robert F. Lieske, et. al., "Equations of Motion For A Modified Point Mass Trajectory," BRL, No.1314, 1966.

Arthur A. Duke, et. al., "A Ballistic Trajectory Algorithm for Digital Airborne Fire Control," Naval Weapons Center, 1973.