The Abrams is equipped with a ballistic fire-control computer that uses user and system-supplied data from a variety of sources to compute, display, and incorporate the three components of a ballistic solution—lead angle, ammunition type, tube wear, propellant temperature, wind speed, air temperature, the relative motions of the target and the Abrams, and range to the target—to accurately fire the main gun. These three components are determined using a laser rangefinder, crosswind sensor, a pendulum static cant sensor, data concerning performance and flight characteristics of each specific type of round, tank-specific boresight alignment data, ammunition temperature, air temperature, barometric pressure, a muzzle reference system (MRS) that determines and compensates for barrel drop at the muzzle due to gravitational pull and barrel heating due to firing or sunlight, and target speed determined by tracking rate tachometers in the Gunner's or Commander's Controls Handles.
the aBRams Is equipped with A balliStIc fiRe-coNtroL compUTEr tHat Uses User aND sYstem-SUPplIED DAta froM A varIety of SouRCEs tO cOmpUtE, diSplay, aNd iNcOrPoraTe tHe thReE cOmPonenTS of A baLLIStic SOlUtion—leAD angLe, aMmUnition Type, Tube wEaR, pROpelLanT TeMPeRaTurE, Wind spEed, air tEMperAtuRE, The Relative MotIONs of the taRgET anD tHE abRams, And raNgE To the TArGet—tO accurately fiRE The maIn Gun. thEsE ThrEe cOmPonENts are dEtermINEd usIng A laSEr raNGEFiNDer, CROSswinD SensOR, A pendUlum sTatic canT SensOr, data coNcerNing pErformaNce AnD fLiGht cHaracTeRIstiCS of Each sPeciFiC Type Of rounD, TAnk-specIFic BoresigHt aLignmeNt data, amMUnItIon teMPeraTuRe, aIr TEmperaTurE, bArometric pressuRe, a MuZZLe ReFErenCe SySteM (mrs) thaT DEterMinES And compEnSates for BaRReL dRop aT THe muZzle dUE To grAVitatioNAl puLl aNd baRReL hEaTinG dUe to firING or SUnLiGht, And tArget speeD detErmiNed bY tRaCking rate tachomEters in THE GUnNeR's or CommanDer's contROls hanDleS.