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Power factor (shooting sports) A high-speed photograph of a .38 Special bullet fired out of a Smith & Wesson Model 686 revolver. Power factor (PF) in practical shooting competitions refers to a ranking system used to reward cartridges with more recoil. Power factor is a measure of the momentum of the bullet (scaled product of the bullet's mass ...
Power flow calculated from AC voltage and current entering a load having a zero power factor (ϕ = 90°, cos(ϕ) = 0).The blue line shows the instantaneous power entering the load: all of the energy received during the first (or third) quarter cycle is returned to the grid during the second (or fourth) quarter cycle, resulting in an average power flow (light blue line) of zero.
Taylor knock-out factor. The Taylor knock-out factor, also called Taylor KO factor or TKOF, is a formulaic mathematical approach for evaluating the stopping power of hunting cartridges, developed by John "Pondoro" Taylor in the middle of the 20th century. Taylor, an elephant hunter and author who wrote two books about rifles and cartridges for ...
The International Defensive Pistol Association (IDPA), founded in 1996, is an organization based in Bogata, Texas that governs a practical shooting sport (IDPA), which is based on defensive pistol tactics, everyday carry equipment, and full-charge service ammunition, to solve simulated "real world" self-defense scenarios. Competitors (shooters ...
The Fédération Internationale de Tir aux Armes Sportives de Chasse (FITASC) Compak Sporting is a type of shotgun sport shooting similar to sporting clays, trap and skeet. Other shotgun sports with (at least partial) international recognition include Sporting Clays, Down-The-Line /ATA and Five stand. Trap shooting in USA.
The United States Practical Shooting Association (USPSA) is the national governing body of practical shooting in the United States under the International Practical Shooting Confederation (IPSC). Its over 35,000 active members [1] and over 500 affiliated clubs make USPSA the largest practical shooting organization in the United States and the ...
Muzzle energy is the kinetic energy of a bullet as it is expelled from the muzzle of a firearm. Without consideration of factors such as aerodynamics and gravity for the sake of comparison, muzzle energy is used as a rough indication of the destructive potential of a given firearm or cartridge. The heavier the bullet and especially the faster ...
Energy–maneuverability theory is a model of aircraft performance. It was developed by Col. John Boyd, a fighter pilot, and Thomas P. Christie, a mathematician with the United States Air Force, [1] and is useful in describing an aircraft's performance as the total of kinetic and potential energies or aircraft specific energy.