Reverse vortex ring (RVR) for dramatic improvements in rocket engine turbomachinery rotordynamic stability margins
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United States of America Patent
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Aug 25, 2020
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N/A
app pub date -
May 7, 2019
filing date -
May 7, 2019
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Abstract
A flat reverse vortex ring is sized and shaped to either attach to or be formed as part of a distal end of a sleeve bearing or seal. The ring has a series of evenly spaced radial channels that extend from an inner diameter to an outer diameter of the ring. The channels have a depth. The ring has an upper surface with an alternating series of planar surfaces and openings located at an upper end of the channels. The ring may have an interior diameter equal to an interior diameter of the sleeve bearing or seal. The ring may have an exterior diameter equal to an exterior diameter the sleeve bearing or seal. The channels may be semi-cylindrical. The channels have a diameter and the depth is a predetermined portion of the diameter. The channels may be rectangular in cross-section with a height-to-width ratio of between 0.5 and 1.5.
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