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The amount of aerodynamic jump is dependent on cross wind speed, the gyroscopic stability of the bullet at the muzzle and if the barrel twist is clockwise or anti-clockwise. Like the wind direction reversing the twist direction will reverse the aerodynamic jump direction. A somewhat less obvious effect is caused by head or tailwinds.
Torque-induced precession (gyroscopic precession) is the phenomenon in which the axis of a spinning object (e.g., a gyroscope) describes a cone in space when an external torque is applied to it. The phenomenon is commonly seen in a spinning toy top , but all rotating objects can undergo precession.
Some sources attribute the roll to gyroscopic precession, [5] [1] however this is not correct: gyroscopic precession always results in a shift of 90 degrees, whereas phase lag can be less than 90 degrees. [3]: 2–28 Gyroscopic precession applies only to rigid systems, but helicopter rotors are not rigid as they are designed to flap up and down.
Precessional movement of Earth. Earth rotates (white arrows) once a day around its rotational axis (red); this axis itself rotates slowly (white circle), completing a rotation in approximately 26,000 years [1] In astronomy, axial precession is a gravity-induced, slow, and continuous change in the orientation of an astronomical body's rotational ...
A gyroscope is an essential component of a gyrocompass, but they are different devices; a gyrocompass is built to use the effect of gyroscopic precession, which is a distinctive aspect of the general gyroscopic effect. [2] [3] Gyrocompasses, such as the fibre optic gyrocompass are widely used to provide a heading for navigation on ships. [4]
The sensing element of a PIGA is a pendulous mass, free to pivot by being mounted on a bearing. A spinning gyroscope is attached such that it would restrain the pendulum against "falling" in the direction of acceleration. The pendulous mass and its attached gyroscope are themselves mounted on a pedestal that can be rotated by an electric torque ...
Parrot Can't Stop and Won't Stop Singing Earth, Wind and Fire. Eve Vawter. March 11, 2024 at 2:15 PM. Alena Gerasimova/Shutterstock.
Axial parallelism of Earth. Axial parallelism (also called gyroscopic stiffness, inertia or rigidity, or "rigidity in space") is the characteristic of a rotating body in which the direction of the axis of rotation remains fixed as the object moves through space. In astronomy, this characteristic is found in astronomical bodies in orbit.
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