Encyclopedia > Fin

  Article Content


A fin is a surface used to produce thrust by travelling in water or another liquid media. The first use of the word was for the limbs of fish, but has been extended to include other animal limbs and man made devices.

The foremost use of fins are to propel an object through lateral thrust (see mechanics).

Fin construction is complicated and very tightly associated with the science of hydrodynamics. Fin construction is much centered around avoiding cavitation.

Examples of fin use:

  • Propellers usually have a number of fins that work to translate tourquing force to lateral thrust, thus propelling a ship.

Constructions of the same purpose as fins, but working in gaseous media instead are generally called wings with aerodynamics as the governing science.

A fin is also a slang term for a five dollar note.

All Wikipedia text is available under the terms of the GNU Free Documentation License

  Search Encyclopedia

Search over one million articles, find something about almost anything!
  Featured Article

... attempted to colonize Vinland George Everest, (1790-1866) F Matthew Flinders, (1774-1814), first to circumnavigate Australia and Tasmania, extensively charted the ...

This page was created in 39.8 ms