FREMGANGSMAATE FOR REDUSERING AV FLATEFRIKSJON

A method of maintaining laminar flow of liquid along the outer surface (10) of a body (11) having relative movement through a liquid and acoustically decoupling the body from the liquid. A surface portion on the body is formed of a composition of matter (13) reactive with the liquid to evolve a gase...

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Bibliographische Detailangaben
1. Verfasser:	THELLMANN, EDWARD L
Format:	Patent
Sprache:	nor
Schlagworte:	AMMUNITION BLASTING EQUIPMENT FOR SHIPPING EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION HEATING LIGHTING MECHANICAL ENGINEERING PERFORMING OPERATIONS RELATED EQUIPMENT SHIPS OR OTHER WATERBORNE VESSELS TRANSPORTING WEAPONS
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Beschreibung
Zusammenfassung:	A method of maintaining laminar flow of liquid along the outer surface (10) of a body (11) having relative movement through a liquid and acoustically decoupling the body from the liquid. A surface portion on the body is formed of a composition of matter (13) reactive with the liquid to evolve a gaseous reaction product on the surface portion, which gaseous product is released into the liquid as relative movement between the body and the liquid occurs. Concurrently, a long chain reaction product is formed which also is released into the liquid providing for further maintenance of the laminar flow. In the illustrated embodiment, the composition of matter (13) is aluminous, the gaseous reaction product is hydrogen, the long chain reaction product is aluminum hydroxide, and the liquid is sea water. In a modified form, the aluminous reactive material (113) is provided within the body, the liquid is introduced thereinto, and the reaction products are discharged at the outer surface of the body.