The pitching of the ship is assumed to take place with which of the following motion?

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The pitching of a ship is assumed to take place with simple harmonic motion.

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The pitching effect of a naval-ship produces force(s) on which of the following components of the ship?

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Pitching is the movement of a ship up and down in a vertical plane about transverse axis.

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Maximum couple during pitching is given by : (ω: angular velocity of rotor & ωpmax: Maximum angular velocity of precession).

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The gyroscope couple does not cause an effect on a naval ship during which of these motions?

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The turbine rotor of a ship has a mass of 3500 kg. It has a radius of gyration of 0.45 m and a speed of 3000 r.p.m. clockwise when looking from stern. Determine the gyroscopic couple upon the ship when the ship is pitching in a simple harmonic motion, the bow falling with its maximum velocity. The period of pitching is 40 seconds and the total angular displacement between the two extreme positions of pitching is 12 degrees.

asked Sep 22, 2022 in Machine Dynamics by Grayson (34.3k points)

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Rolling is the turning of a complete ship in a curve towards left or right, while it moves forward.

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The mass of the turbine rotor of a ship is 20 tonnes and has a radius of gyration of 0.60 m. Its speed is 2000 r.p.m. The ship pitches 6° above and 6° below the horizontal position. A complete oscillation takes 30 seconds and the motion is simple harmonic. Determine Maximum angular acceleration of the ship during pitching.

asked Sep 22, 2022 in Machine Dynamics by Grayson (34.3k points)

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Which of the following is known as the axis of precession?

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Which of the following represent the maximum angular acceleration?

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Which of the following would change during rolling of a navalship?

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The axis of precession is parallel to axis of spin during rolling for only a selected few positions.

asked Sep 22, 2022 in Machine Dynamics by Grayson (34.3k points)

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asked Sep 22, 2022 in Machine Dynamics by Grayson (34.3k points)

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The rolling of a complete ship side-ways is known as pitching of a ship.

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When the pitching of a ship is upward, the effect of gyroscopic couple acting on it will be

asked Sep 22, 2022 in Machine Dynamics by Grayson (34.3k points)

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The mass of the turbine rotor of a ship is 20 tonnes and has a radius of gyration of 0.60 m. Its speed is 2000 r.p.m. The ship pitches 6° above and 6° below the horizontal position. A complete oscillation takes 30 seconds and the motion is simple harmonic. Determine Maximum gyroscopic couple.

asked Sep 22, 2022 in Machine Dynamics by Grayson (34.3k points)

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A ship propelled by a turbine rotor which has a mass of 5 tonnes and a speed of 2100 r.p.m. The rotor has a radius of gyration of 0.5 m and rotates in a clockwise direction when viewed from the stern. Find the gyroscopic effect when the ship sails at a speed of 30 km/h and steers to the left in a curve having 60 m radius.

asked Sep 22, 2022 in Machine Dynamics by Grayson (34.3k points)

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The turbine rotor of a ship has a mass of 3500 kg. It has a radius of gyration of 0.45 m and a speed of 3000 r.p.m. clockwise when looking from stern. Determine the gyroscopic couple upon the ship when the ship is steering to the left on a curve of 100 m radius at a speed of 36 km/h.

asked Sep 22, 2022 in Machine Dynamics by Grayson (34.3k points)

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The rotor of a ship rotates in clockwise direction when viewed from stern and the ship takes a right turn. The effect of gyroscopic couple acting on it will be to raise the stern and lower the bow.

asked Sep 23, 2022 in Machine Dynamics by Grayson (34.3k points)

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The turbine rotor of a ship has a mass of 8 tonnes and a radius of gyration 0.6 m. It rotates at 1800 r.p.m. clockwise, when looking from the stern. Determine the gyroscopic couple, if the ship travels at 100 km/hr and steer to the left in a curve of 75 m radius.

asked Sep 22, 2022 in Machine Dynamics by Grayson (34.3k points)

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The rotor of a ship rotates in clockwise direction when viewed from the stern and the ship takes a left turn. The effect of the gyroscopic couple acting on it will be

asked Sep 22, 2022 in Machine Dynamics by Grayson (34.3k points)

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The rotor of a ship rotates in clockwise direction when viewed from stern and the ship takes a left turn. The effect of gyroscopic couple acting on it will be

asked Sep 22, 2022 in Machine Dynamics by Grayson (34.3k points)

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