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zeitgeist.si • Poglej temo - Kavitacija

Kavitacija

Kavitacija

PrispevekNapisal/a _Mitto_ » 19 Mar 2011, 13:29

Dan pred Z-dayem sem se na avtobusu na poti v LJ o zeitgeistu menil z enim in mi je vsaj delno razložil pojav kavitacije. Fresco v svojih videih pravi, da bomo lahko pod podo potovali izjemno hitro. Ah kako naj bi mu vrjel, ko pa vem da je mobilnost po vodi bistveno manjša kot po zraku oz. vakuumu.

https://secure.wikimedia.org/wikipedia/ ... Cavitation
https://secure.wikimedia.org/wikipedia/ ... cavitation
Gre za pojav, ko se pri veliki hitrosti potovanja predmeta skozi vodo ustvari velik pritisk, ki "zdrobi" molegule vode in s tem ustvari plin zkozi katerega se lahko premikamo skoraj brez upora. Seveda je vprašanje na kakšen način poganjat ladjo (dokler ne presežemo te hitrosti), saj tudi propelerji ustvarjajo kavitacijo in pri večji hitrosti sploh ne morejo poganjti ladje, ker ustvarijo plin (od katerga se ne morejo odrivati).
Baje se kavitacijo že uporablja pri torpedih - jasno, za vojsko vse (grrrrr... )

http://www.youtube.com/watch?v=gR0YBAhY2PQ
- Prosti študentski zapiski, sodeluj tudi TI. Literatura za vsakogar.
- Odprto mesh brezžično omrežje slovenije.
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_Mitto_
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Re: Kavitacija

PrispevekNapisal/a _Mitto_ » 19 Mar 2011, 15:03

https://secure.wikimedia.org/wikipedia/en/wiki/Shkval
Torpedo iz 93km/h pri zapustitvi podmornice, pospeši na 370 km/h, kjer doseže Superkavitacijo. Top hitrost kavitacije (ne torpeda) naj bi bila 560 km/h, če prav razumem.
Iranci imajo svojo različico https://secure.wikimedia.org/wikipedia/ ... missile%29
- Prosti študentski zapiski, sodeluj tudi TI. Literatura za vsakogar.
- Odprto mesh brezžično omrežje slovenije.
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_Mitto_
Koordinator goriške regije
 
Prispevki: 246
Pridružen: 27 Jan 2011, 02:13
Lokacija: Vipava


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