ROTOR TRAIN TORSIONAL MODE FREQUENCY TUNING APPARATUS
First Claim
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1. A rotor train torsional mode frequency tuning apparatus, comprising:
- a rotor train comprising first and second shafts and a coupling operably disposed between the first and second shafts,the rotor train having a torsional mode frequency, andthe apparatus further comprising;
a coupling element disposed at the coupling and being configured to adjust the torsional mode frequency of the rotor train by a change in at least one of inertia and/or torsional stiffness in the rotor train.
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Abstract
A rotor train torsional mode frequency tuning apparatus is provided and includes a rotor train and a coupling element. The rotor train includes first and second shafts and a coupling operably disposed between the first and second shafts and has a torsional mode frequency. The coupling element is disposed at the coupling and is configured to adjust the torsional mode frequency of the rotor train by a change in at least one of inertia and/or torsional stiffness in the rotor train.
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Citations
20 Claims
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1. A rotor train torsional mode frequency tuning apparatus, comprising:
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a rotor train comprising first and second shafts and a coupling operably disposed between the first and second shafts, the rotor train having a torsional mode frequency, and the apparatus further comprising; a coupling element disposed at the coupling and being configured to adjust the torsional mode frequency of the rotor train by a change in at least one of inertia and/or torsional stiffness in the rotor train. - View Dependent Claims (2, 3, 4, 5)
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6. A rotor train torsional mode frequency tuning apparatus, comprising:
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a coupling element fixedly disposed on a coupling operably disposed between first and second shafts; and a portable mass supportively disposable on the coupling element, the portable mass being movable to the coupling element to adjust at least one of a torsional stiffness and a rotational inertia of the second shaft such that a frequency of a torsional mode of the second shaft is substantially identical to a natural frequency of the torsional mode of the first shaft. - View Dependent Claims (7, 8)
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9. An apparatus for rotor train torsional mode frequency tuning, the rotor train comprising:
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a coupling by which respective ends of shafts are connectable with each other, the apparatus comprising; a coupling element fixedly disposed on the coupling; and a portable mass supportively disposable on the coupling element, the portable mass being movable to the coupling element to adjust at least one of a torsional stiffness and a rotational inertia of one of the shafts such that a frequency of a torsional mode of the one of the shafts is substantially identical to a natural frequency of the torsional mode of the other one of the shafts. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification