Horizontal Coriolis Force: Calculation

Equation To manually calculate horizontal Coriolis deflection, we only need to know the latitude of our position and how long our bullet will be in flight: (.00007292 rad/s * cos(latitude°)) * (Time of flight) * 1000 = Horizontal deflection in MRADs Where positive outputs = right deflection, and negative outputs = left deflection. Data collection Time of flight can be found in the ATragMX under the “MC” “RC” button in the top right of the screen or derived in an online ballistics program. As the ATragMX suite is not available in situations where manual ballistics are relevant, time of flight information should be recorded prior to operation start. Map latitude in Arma 3 does not always correlate with real word locations, this information sometimes not being specified and auto-populating with default Arma values. Latitudes for common UNITAF campaigns are listed below: UNITAF Campaign Map Name Latitude Operation Black Flag Takistan & Takistan Mountains 35° Operation Deadlock Operation Everglade Operation Everyman Armavir Unknown Operation Fault Line Operation Fulcrum Operation Guardian Angel Island Panthera 46° Operation Hetman Linovia Unknown Operation Honeybadger Reshmaan Province Unknown Operation Polaris Altis 40° Operaton Quantum Kingdom of Regero Unknown Operation Steadfast Resolve G.O.S. Al Rayak 36° Operation Valiant Guardian Beketov 55° Calculation Example Equation limitations This equation will serve well under most conditions and the small degree of inherent error will not impede operations in target rich environments even in hand with poor atmospheric conditions. In high value target environments, or when the effects of a single shot must be guaranteed, it should be noted that atmospherics are not considered in the equation, and under extreme examples this additional variable can create relevant error when compounded with other unknowns. As air resistance increases (typically due to lower temperatures and altitudes, or higher pressures and humidities), our bullet loses its inherited rotational velocity more quickly (see Horizontal Coriolis: Introduction). This increases the horizontal deflection accumulated over time, up to around .05 MRADs at 1000m in unfavorable conditions. When atmospherics are unfavorable, horizontal Coriolis holds need to increase.