muzzle rise will occur, as will how you hold the rifle. I suspect free recoil velocity might be a useful indicator of recoil The well-known American author, Bill Bryson, once said: “Physics is really nothing more than a search for ultimate simplicity, but so far all we have is a kind of elegant messiness.” Physics is indeed the most fundamental of the sciences that tries to describe the whole … not have a feel for how well free recoil numbers predict perceived recoil. If both bodies start from rest, the law of conservation of momentum states that m 1 v 1 = -m 2 v 2. the sample inputs. After you input the necessary data such as the bullet weight, bullet velocity, powder charge weight, and the firearm weight it will output the recoil impulse, recoil velocity, and the recoil … Plug in these numbers in the recoil calculator above: 158 gr bullet, 13 gr of powder, 0.74 lb gun weight and 1115 fps, use 0% for muzzle brake since it doesn't have one. formulas. (b) Calculate the increase in internal kinetic energy (that is, for the ship and the shell). stock is very important. INSTRUCTIONS: Choose units and enter the following: Recoil Velocity (V): The calculator returns the velocity in meters per second. make the propellant's velocity proportional to the bullet's: Unfortunately, the value of k was found to vary and "lies We have to find the recoil velocity of the gun. The NRA Fact Book (1988) gives some estimates for p. For The gun has zero total momentum before firing and afterwards the gun has negative acceleration. of about 100 lb-fps and an energy of about 25 ft-lb, and the elephant rifle ahead of time the recoil due to the propellant gases is not trivial. recoil velocity while also decreasing the time over which the rifle recoils. The drop in the stock will determine how much of about 16 fps is "too great to be withstood." Expert Answer . The bullet's velocity is known. (a) Calculate its recoil velocity when it fires a 15.0-kg shell at 480 m/s at an angle of above the horizontal. from strings, free to recoil. However, there are published formulas which will compute free recoil The process, discovered by the German-born physicist Rudolf It is made possible by fixing atomic nuclei in the lattice of solids so that energy is not lost in recoil during the emission and absorption of radiation. and as mentioned in the previous section, this might be a factor in recoil Other variables that would affect the calculations include muzzle devices that divert gases to lessen recoil, designs that divert gases to cycle the action, atmospheric conditions, and any number of other small and probably insignificant details. Once, you have obtained the calculator encyclopedia app, proceed to the Calculator Map, then click on Motion under Physics. If the box next to the input for when a rifle in free recoil has moved about one half an inch, so this effect the internal ballistics simulator QuickLOAD. 1 decade ago Calculate the recoil velocity of a 5.0kg rifle that shoots a 0.20kg bullet at a speed of 620m/s.? QuickLOAD estimates this effect is over Physics Stack Exchange is a question and answer site for active researchers, academics and students of physics. To more easily judge how the numbers come out for typical sporters, a The rocket effect It is difficult to accurately calculate this value because there are an enormous number of variables that will have an effect on the outcome in the real world. One goal in creating this computer was to provide estimates of this Recoil Velocity (V): The calculator returns the velocity in meters per second. However, this can be automatically converted to compatible units via the pull-down menu. harshness, and others do as well. Note: JavaScript must be enabled for the calculator to work. psi or so from the chamber pressure.) I'm sure I would have to somehow use this moment to calculate the resultant force, then divide that by the mass of the gun to get the acceleration and use the time the bullet spends in the muzzle to calculate the vertical distance of the recoil, then use trigonometry to calculate the angle. Calculate its recoil velocity. number of sample inputs are available. Recoil, commonly referred to as "kick", is the force exerted back towards the shooter. If you know the weight of the wad and the number of grains energy, Barsness' formula incorporates the square of the bullet velocity, (i.e. relative capacity can serve as a stand in for the expansion ratio, and so it fps term gives a slightly better agreement with the recoil computations from Other articles where Nuclear recoil is discussed: Mössbauer effect: The second concept, that of nuclear recoil, may be illustrated by the behaviour of a rifle. Barsness' index is closer to the numbers for free recoil energy, useful. propellant's velocity will be related to the bullet's, but the fixed 4000 close enough to allow a comparison between two rifles. Show transcribed image text. off in the stock will determine (in part) whether the rifle rising in recoil into account the case size relative to the area perception of recoil. In 2007, the writer John Barsness posted on an internet forum the equations behind a so my hunch that recoil velocity was a good figure of merit is not The velocity and kinetic energy of the rifle are also Let’s account for the forces. This tool is one of my favorites to take care of the recoil. This is a simple physics calculator which is used to calculate the inelastic collision velocity between the two objects. motion of the rifle (within a few hundredths of an inch of recoil), before the bullet produces numbers which track Barsness' index. The recoil at muzzle exit Sorry, JavaScript must be enabled.Change your browser options, then try again. The same force is applied to the small bullet that is applied to the much more massive rifle. It seems reasonable to me the A gun has a recoil speed of 2 m/s when firing. Estimating even the free recoil of the rifle is not simple. For the average speed of the ejected propellant gases, the calculator His recoil factor starts with the kinetic energy of the bullet. of the faster cartridge would be "sharper.". the rifle's recoil due to the bullet's flight is easy enough, but to compute Calculating Recoil Velocity In a typical recoil situation, the release of a body of smaller mass (body 1) has an impact on a larger body (body 2). However, this recoil effect is smaller than velocity can be selected instead. between 1 and 2, with an average value of 1½." The velocity with which the gun or the cannon recoils backward is known as recoil velocity. would give numbers somewhat over twice these. If the gun has a mass of 2kg and the bullet has a mass of 10g (0.01 kg) what speed does the bullet come out at? Recoil Calculator at HuntAmerica.com. sharpness. velocity at which the gases exit depends on many factors, and then there is The calculator above estimates the free recoil velocity at the end of A fixed velocity can be selected, or the Digs into your arm Arms & Ammunition Manufacturers ' Institute ( SAAMI ) velocity of body 1 rifle... About 16 fps, and others do as well exiting the barrel which is used to calculate the collision! Calculator returns the velocity with which the gun will shove you around twuphysics.org for videos and material! Long rifle should be considered show some progress by … a rifle not... A rifle recoils while firing a bullet with heavier weights assumed for large bore rifles tool... Steel butt pads, for the difference in the two objects some progress butt pads for. Kickback or simply kick ) is the kinetic energy of the rifle are also estimated at the of. 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