Classical Mechanics - A Spinning Bullet - Physics Stack Exchange

1. Magnus effect - Wikipedia.
2. BILLETSPIN-EDC.
3. How to Calculate Spin Drift - Gone Outdoors.
4. Classical mechanics - A spinning bullet - Physics Stack Exchange.
5. Bullet RPM and Drag How BC Changes with Bullet Spin Rates.
6. Does it matter what direction a bullet spins? - Quora.
7. Bullet spin rise? | Discuss Fastpitch Softball Community.
8. External ballistics - Wikipedia.
9. Why Bullets Spin When Shot From A Rifle Or Handgun?.
10. Does bullet lube spin off after leaving muzzle? | Shooters#x27; Forum.
11. Over-Stabilization of Bullets Why Is Too Much Spin a.
12. Effect of Bullet Spin on Terminal Performance.
13. The Physics of Bullets: Why a Modern Gun Shoots 10 Times.

Magnus effect - Wikipedia.

Answer 1 of 5: If your rate of twist is either too fast or too slow to stabilize your projectile it will be detrimental. Thats why its important to know the rate of twist for all your rifle barrels and know what bullet weights work well for your rate of twist. When bullets were fired at muzzle velocities fast enough to spin them too fast, they always grouped smaller in MOA at longer ranges than shorter ranges. When fired just fast enough to spin at the lower end of their required RPM range, groups were equal in MOA through 300 yards or thereabouts. The bullet didn#x27;t spin out with increasing velocity. OpenSubtitles2018.v3 A new reload animation was also introduced, which, when Max reloads while in Bullet Time, allows him to duck to avoid bullets , spin around to survey the combat situation, and briefly pause to give the player a moment to think of a strategy.

BILLETSPIN-EDC.

The barrel#x27;s rifling imparts spin to the bullet as it passes through the bore. This rotation stabilizes the bullet in flight. Different bullets need different spin rates to perform optimally. Generally speaking, among bullets of the same caliber, longer bullets need more RPM to stabilize than do shorter bullets-often a lot more RPM..

How to Calculate Spin Drift - Gone Outdoors.

Nudge the front a bit to the side but keep moving in the same direction, and it will just spin around and around. Get the bullet spinning, and different forces come into play - forces like. The spin rate of the bullet depends on the twist rate of the rifling. The twist rate and velocity of the bullet provide RPM which helps bullet to stabilize. The RPM of velocity can be calculated as Bullet RPM = Muzzle velocity x 720 / Twist Rate Therefore, bullets spin when shot from a rifle or handgun because barrel rifling causes this spinning. This will result in bullet spin, or something close to it. THIS IS OKAY. If you balance your pitch with great posture and great leg drive, you can throw pretty darn fast with bullet spin, or something in between bullet and 4-seam spin. In fact, according to physics, 4-seam spin may be marginally the fastest, but it also flies the straightest.

Classical mechanics - A spinning bullet - Physics Stack Exchange.

Answer 1 of 10: The reason that making a bullet spin help its accuracy and range is due to the angular momentum of the bullet. Thats not saying much though, since spin can be defined as a special case of angular momentum. When bullet spins, these imperfections work in all directions equally, so bullet does not flip. This cause near-perfect trajectory. Flipped bullet have higher air drag -gt; reduced range. Also, please note, that even bullet spin does not guarantee that bullet would not flip when going from supersonic to subsonic speed. This goes into how bullets spin, twist rates, bullet Rpm, fall rate and other factors. I had this on my other channel and it was lost.

Bullet RPM and Drag How BC Changes with Bullet Spin Rates.

The faster you spin a bullet, the less accurate it will be. There is no reason to spin a bullet any faster than necessary to get the Sg S g that you want. For optimal accuracy, I shoot for 1.3-1.4. For ballistic optimization, 1.5-1.7 is a better number. Any faster will result in poor precision and possibly bullet destruction.

Does it matter what direction a bullet spins? - Quora.

The spin on the bullet keeps it stable in flight and the pointy end going forward. Once the spin stops or there is no spin, the bullet begins to tumble, putting its side to the #x27;wind#x27;, and drag increases, decreasing range. It#x27;s the same reason a football quarterback imparts a spin to the football when passing. Answer 1 of 3: The spin of a bullet is caused by the rifling within the barrel. Because I#39;ve seen so many James Bond movies, I assumed that all guns had a right-hand twist.

Bullet spin rise? | Discuss Fastpitch Softball Community.

If your 10yo DD is throwing with bullet spin and not losing it too far inside, or on the ground, then you are on your way towards developing a speed-baller. Let her throw with bullet spin as a 10yo. The speed she develops with keep her hooked on pitching, until it#39;s time to teach her movement pitches like drop/rise/change and curve. Oct 30, 2018 #3. Topspin in ball games is defined as spin about a horizontal axis perpendicular to the direction of travel that moves the top surface of the ball in the direction of travel. Under the Magnus effect, topspin produces a downward swerve of a moving ball, greater than would be produced by gravity alone. For the less eager, there are several approximate methods of calculating the required spin for a bullet. The simplest is the old Greenhill formula: T = 150 / L. where T is the twist in bullet calibers, and L is the length of the bullet in calibers. Unfortunately, it#x27;s not a very good method, but I include it here to show that longer bullets.

External ballistics - Wikipedia.

There is very little that causes the projectiles spin rate to decrease. As the bullet flies downrange and relatively rapidly loses its velocity, the spin rate hardly changes. The projectile becomes steadily more and more stable. This increase in stability will play a prominent role in spin drift at long ranges. Recommended. Spin drift, also called gyroscopic drift, occurs when a force is applied to the spinning bullet. The force of gravity acting on the bullet sends it slightly to the right or left of the original trajectory. The direction of the drift corresponds to the direction of the barrel#x27;s twist. The bullets spin rate is determined by the twist rate of the rifling. The bullets twist rate and velocity produce revolutions per minute RPM, which aids in bullet stabilization. The revolutions per minute RPM of velocity can be calculated as Bullet RPM = Muzzle velocity x 720 / Twist Rate.

Why Bullets Spin When Shot From A Rifle Or Handgun?.

The bullet is actually skidding along the trajectory, with the center of gravity following the trajectory and the tip pointed to the right for righteous spin bullets and slightly upward. The incoming air pushing on the left side of the bullet causes it to drift.

Does bullet lube spin off after leaving muzzle? | Shooters#x27; Forum.

Spin drift is caused by aerodynamics forcing the bullet tip to turn slightly in the direction of rotation as the bullet tip follows its curved flight path. This rotation of the bullet is very small, usually less than 0.1 degrees, but because it affects the entire flight path, it moves the bullet slightly in the direction of the spin. The. BILLETSPIN is Beautifully crafted, precision made unique items for fun, entertainment and everyday carry. Custom and machined from exotic and raw materials such as steel, copper, bonze, timascus amp; damascus. Collectible items including spin tops, whistles, pens, Gambits and everyday carry items. BILLETSPIN is based.

Over-Stabilization of Bullets Why Is Too Much Spin a.

This schlieren image of a bullet travelling in free-flight demonstrates the air-pressure dynamics surrounding the bullet. External ballistics or exterior ballistics is the part of ballistics that deals with the behavior of a projectile in flight. The projectile may be powered or un-powered, guided or unguided, spin or fin stabilized, flying. Rifling is what puts spin on a bullet. Rifling is a spiral that is cut into the inside of a gun barrel that the bullet follows like a bolt follows a thread in a nut. This causes the bullet to rotate as it travels down the gun barrel and inparts spin to it. Why it spins. The spin is put onto a bullet to make it fly through the air more accurately. The spin-stabilized rifle bullet cones around the mean trajectory with its nose angled INWARD toward that trajectory. I am a physicist. My Coning Theory of Bullet Motions is fully supported by physics. The coning motion of the bullets CG about the mean trajectory is driven by the aerodynamic forces of lift and drag.

Effect of Bullet Spin on Terminal Performance.

Bullets spin when they are shot from a rifle or handgun, but why? One reason is that the bullet#x27;s shape causes it to rotate as it travels through the barrel of the gun and then leaves. Another possible explanation is that gases behind the bullet can cause it to rotate in flight because of their higher pressure on one side than on another.

The Physics of Bullets: Why a Modern Gun Shoots 10 Times.

By definition a quot;bullet spin risequot; is simply a high pitch. You can call such a pitch a ramp ball, with the pitcher throwing it on a low to high trajectory and with great accuracy and speed be very effective with it. But it lacks the rise ball effect. So basically it#x27;s a bullet spin fast ball thrown high over the hands. ?.