critical speed वाक्य
उदाहरण वाक्य
मोबाइल
- Restraining springs, opposing the yaw motion of the wheelset, and similar restraints on bogies, may be used to raise the critical speed further.
- That meant that for travel above some critical speed, a hovercraft could be more efficient than a wheeled vehicle of the same weight.
- But the critical speed thing should be no surprise because drag is a proportional-to-the-cube-of-the-velocity effect-where as A / C cost is irrespective of velocity.
- It uses an axial two-staged low pressure ratio subsonic turbine that operates at 65, 000rpm, which is between the second and third critical speed.
- That implied that for travel above some critical speed, a hovercraft could be more efficient than a wheeled vehicle running on the same route.
- Both calculate an approximation of the first natural frequency of vibration, which is assumed to be nearly equal to the critical speed of rotation.
- Critical speed depends upon the magnitude and location of the shaft unbalance, the length of the shaft, its diameter, and the kind of bearing support.
- In practice, the swaying is damped out below a critical speed, but is amplified by the forward motion of the train above the critical speed.
- In practice, the swaying is damped out below a critical speed, but is amplified by the forward motion of the train above the critical speed.
- The kinematic description of the motion of tapered treads on the two rails is insufficient to describe hunting well enough to predict the critical speed.
- Since the wavelength increases with reducing taper, increasing the critical speed requires the taper to be reduced, which implies a large minimum radius of turn.
- As movement approached its critical speed, the subjects fingers were found to move from out-of-phase ( windshield-wiper-like ) movement to in-phase ( toward midline movement ).
- Arranging wheels in bogies to increase the constraint on the yaw motion of wheelsets and applying elastic constraints to the bogie also raises the critical speed.
- The lowest speed at which the natural frequency is first encountered is called the first critical speed, but as the speed increases additional critical speeds are seen.
- The lowest speed at which the natural frequency is first encountered is called the first critical speed, but as the speed increases additional critical speeds are seen.
- A propeller's performance suffers as the blade speed nears the critical speed, drag and torque resistance increase rapidly and shock waves form creating a sharp increase in noise.
- Gustaf de Laval, a Swedish engineer, ran a steam turbine to supercritical speeds in 1889, and Kerr published a paper showing experimental evidence of a second critical speed in 1916.
- In its conclusions, the federal safety board said the Transit Authority " lacks an adequate oversight testing program to ensure operator compliance with critical speed and signal operating rules ."
- There are additional restraining forces applied by the vehicle suspension and, at high speed, the wheel set will generate additional gyroscopic torques, which will modify the estimate of the critical speed.
- That is why the critical speed depends on the ratio of the axle load ( which determines the adhesion force ) to the wheelset mass ( which determines the inertial forces ).
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