Wing in ground effect machine that uses the pressurised cushion of proximity to the ground to maintain a skimming flight path.
Related Terms |
DEPOSITS
Oil-insoluble materials that result from oxidation and decomposition of lube oil and contamination from external sources and engine blow-by. These can settle out on machine or engine parts. Examples are sludge, varnish, lacquer and carbon.
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GROUND LOG
A device for determining the course and speed over the ground in shallow water consisting of a lead or weight attached to a line. The lead is thrown overboard and allowed to rest on the bottom. The course over ground is indicated by the direction the line tends and the speed by the amount of line paid out in a unit of time.
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EROSION
The progressive removal of a machine surface by cavitation or by particle impingement at high velocities.
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CATASTROPHIC FAILURE
Sudden, unexpected failure of a machine resulting in considerable cost and downtime.
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BREAKDOWN MAINTENANCE
Maintenance performed after a machine has failed to return it to an operating state.
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FERROGRAPHY
An analytical method of assessing machine health by quantifying and examining ferrous wear particles suspended in the lubricant or hydraulic fluid.
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DELAMINATION WEAR
A complex wear process where a machine surface is peeled away or otherwise removed by forces of another surface acting on it in a sliding motion.
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GROUND ABSORPTION
The dissipation of energy in radio waves because of absorption by the ground over which the waves are transmitted.
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PREVENTIVE MAINTENANCE
Maintenance performed according to a fixed schedule involving the routine repair and replacement of machine parts and components.
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HOLDING GROUND
The bottom ground of an anchorage. The expression is usually used with a modifying adjective to indicate the quality of the holding power of the material constituting the bottom
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