Effects of Different Meteorological Standards on Projectile Path

Abstract

Projectile path is dictated by estimated line of fire. Line of fire can be estimated by referring RT as well as trajectory model on computer. RT is prepared under ISA/ICAO meteorological standard conditions without wind effect. Meteorological conditions like density, humidity, pressure, wind, temperature affect the path of the trajectory. Meteorological data plays very important role in trajectory prediction. Trajectory is predicted using RT for a particular weapon where ICAO standard met data is used. Ind Std met data is different from ICAO data. Use of Ind Std data improves the accuracy of trajectory prediction for Indian field deployment. In this paper, comparative study of effect on projectile path under ICAO, Ind Std and actual Indian prevailing met have been carried out and analyzed. From this analysis, a new model has been established that if actual prevailing met is not available then trajectory prediction can be carried out using Ind Std met data with wind data as per date and time. It predicts trajectory very close to actual. Effect of wind has been studied and found that wind effect is very dominant on projectile path. Study of effect of density also has been carried out in this paper. It is observed that Ind Std density values are much close to actual as compared to ICAO. Therefore, if insufficient met is recorded then Ind std density can be used to fill density values for that region.

Modeling of Micro-downburst accompanied with rain and analysis of its influence on artillery firing accuracy

“…There are various factors that affect the firing accuracy of artillery external ballistic. According to research, among the factors that affect the firing accuracy of artillery, the influence caused by meteorological conditions accounts for more than 70% [1][2], among which the influence of low-altitude wind shear on artillery external ballistic is typical. As one of many types of low-level wind shear, microburst has become a dangerous airflow with serious impact on flight safety due to its small scale, large intensity, short life cycle, and failure to detect and forecast in time [3][4][5].…”