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Example of a ballistic table for a given 7.62×51mm NATO load. Bullet drop and wind drift are shown both in mrad and MOA.. A ballistic table or ballistic chart, also known as the data of previous engagements (DOPE) chart, is a reference data chart used in long-range shooting to predict the trajectory of a projectile and compensate for physical effects of gravity and wind drift, in order to ...
Automated Firearms Identification has its roots in the United States, the country with the highest per capita firearms ownership. [1] [2] In 1993, the Federal Bureau of Investigation commissioned Mnemonics Systems Inc. to develop Drugfire, which enabled law enforcement agencies to capture images of cartridge casings into computers, and automate the process of comparing a suspect cartridge ...
The gun data computer was a series of artillery computers used by the U.S. Army for coastal artillery, field artillery and anti-aircraft artillery applications. For antiaircraft applications they were used in conjunction with a director computer.
Ballistic data for up to five different weight bullets can be specified; it may be provided in either SI or English units, but this choice must be consistent for all five sets. The x in the field name should be replaced with 1–5 as displayed in the template format shown above (e.g. bw1, bw2, btype1, btype2, vel1, vel2, en1, en2 , etc.):
The QuickLOAD interior ballistics predictor program also contains the external ballistics predictor computer program QuickTARGET. QuickTARGET is based on the Siacci/Mayevski G1 model and gives the user the possibility to enter several different BC G1 constants for different speed regimes to calculate ballistic predictions that more closely ...
Later, card readers that read cards serially, column by column became more common. Card punches necessarily run more slowly to allow for the mechanical action of punching, up to around 300 CPM or 400 characters per second. [5] Some card devices offer the ability to interpret, or print a line on the card displaying the data that is punched ...
BRLESC employed punched cards, magnetic tape, and a magnetic drum as input-output devices, which could be operated simultaneously. It was capable of five million (bitwise) operations per second. A fixed-point addition took 5 microseconds , a floating-point addition took 5 to 10 microseconds, a multiplication (fixed- or floating-point) took 25 ...
Equipment used in this data processing cycle included a digital tape translator, an IBM 709 computer, an analog computer, various tape and card converters and card punches, analog and digital playback equipment, data plotters, chart and film readers, oscilloscope cameras and oscilloscopes, a photo darkroom, and miscellaneous support equipment.