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The limbs store the kinetic energy of the bow – no energy is stored in the pulleys and cables. Draw weights of adult compound bows range is between 40 and 80 pounds (18 and 36 kg), which can create arrow speeds of 250 to 370 feet per second (76 to 113 m/s). In the most common configuration, there is a cam or wheel at the end of each limb. The ...
Pellet exiting muzzle, with formula for energy overlaid.. 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.
Bow wave of a canal barge. A bow wave is the wave that forms at the bow of a ship when it moves through the water. [1] As the bow wave spreads out, it defines the outer limits of a ship's wake. A large bow wave slows the ship down, is a risk to smaller boats, and in a harbor can damage shore facilities and moored ships.
The cable backed bow, showing the bow (a) bearing the tensioned cable (b) along the face of it, attached by bindings (c). Finally, the bow strung with the main string (d). Several Inuit cable-backed bows. The shapes of the top four are an interesting mix of deflex, reflex, and decurve. A cable-backed bow is a bow reinforced with a cable on the ...
The cord that attaches to both limb tips and transforms stored energy from the limbs into kinetic energy in the arrow Sling A strap or cord attached to the bow handle, wrist or fingers to prevent the bow from falling from the hand Finger tab or thumb ring A protection for the fingers that draw the string. Can also provide a better release ...
Free recoil / Frecoil is a vernacular term or jargon for recoil energy of a firearm not supported from behind. Free recoil denotes the translational kinetic energy (E t) imparted to the shooter of a small arm when discharged and is expressed in joules (J), or foot-pound force (ft·lb f) for non-SI units of measure.
This cartridge was originally loaded with 90-grain (5.8 g) of cordite and 525-grain (34.0 g) bullet at 2,300 ft/s (700 m/s) for 6,166 ft⋅lbf (8,360 J) of kinetic energy. [2] While the .505 Gibbs has a greater case capacity than most modern cartridges, it is loaded to lower pressures. [ 2 ]
Armour-piercing discarding sabot (APDS) was initially the main design of the kinetic energy (KE) penetrator. The logical progression was to make the shot longer and thinner to increase its sectional density, thus concentrating the kinetic energy in a smaller area. However, a long, thin rod is aerodynamically unstable; it tends to tumble in ...