ar neissoks visi banginiai ant kranto, kai tokie laivai prades po juras plaukiot?

26mln doleriu ? tiek turbut pentagonas skiria kavai savo valgyklose...

Nu banginiai , kasalotai ir visi kiti vandenu gyventojai laikykites!Svarbiausia -traukites is kelio, Adamas skuba i susitikima ...

Nu banginiai , kasalotai ir visi kiti vandenu gyventojai laikykites!Svarbiausia -traukites is kelio, Adamas skuba i susitikima ...

Man idomu ar jis pats skaito ka cia i komentarus prifoodina. Net jei ir skaito tai vistiek nieko nespranta.

Sios antrastes tikslas ir tema:

-atseit "atsvara" rusu propagandai,

- apkaltinti, apjuodinti Amerika, del jos tariamo agresyvumo, militarizmo didinimo...
(O kodel mes turime dometis ginklais?! tai kariskiu darbas, tegul jie ir domisi!)

-nutyli, kad kitos kartos sub (povandenines valtys) bus panasus i dideles zuvis ir netures sraigtu(!)

Wikipedia: From cavitation to supercavitation

Cavitation happens when water pressure is lowered below its vapor pressure or vapor pressure is increased to water pressure. This often happens at extremely high speed although it can happen at any speed and even when still.

*A supercavitating object's main features are a specially shaped nose, typically flat with sharp edges, and a streamlined, hydrodynamic and aerodynamic shape.

- When the object is traveling through water at speeds of above roughly one hundred miles per hour (44.7 m/s), the nose deflects the water outward so fast that it flies free of the surface.
- Water pressure takes time to collapse the wall of the resulting cavity, hence the nose opens an extended bubble of water vapor.
- Given sufficient speed, or by the injection of gas into a partially-developed bubble, the cavity can extend to envelop the entire body of the object.
-- A supercavitating object quite literally 'flies' through the surrounding gas.

The pressure of the fluid can drop due to its high speed (Bernoulli's principle) and when the pressure drops below the vapor pressure of the water or the temperature increases thus vapor pressure increases reaching water pressure, it vaporizes — typically forming small bubbles of water vapour (water in its gas phase).
In ordinary hydrodynamics, cavitation is a mostly unintended and undesirable phenomenon: the bubbles are typically not sustained but implode as they and the water around them suddenly slows down again, with a resulting sudden rise in ambient pressure


The supercavitation principle is being used for very high performance propellers and also for control surfaces such as rudders.

In 1940, Herbert A. Wagner - Head of the Development Department for Guided Missiles at Henschel Flugzeugwerke (HFW), Berlin - started the development of two Guided Air-to-Sea Missiles:

-the Henschel Hs 293 and the larger Henschel Hs 294.

- Both missiles were supposed to be guided to a point in front of the water line of a ship.

At water entry, the warhead would separate from fuselage and wings. Using its remaining kinetic energy, the (unguided) warhead-projectile would then follow an underwater path towards the ship target.

The projectile body had a slender conical shape with an ogive nose. The underwater path could be curved slightly upward by means of a small ridge on the upper side of the ogive.
The projectile had to be curved upward in order to achieve a nearly horizontal path at the point of impact.
In order to stabilize the projectile under water within its supercavity bubble, a somewhat larger cone angle was used at the tail of the body.

**Tests with prototypes of the Hs 294 achieved water entry velocities of approximately 150 to 180 m/s, corresponding to underwater paths of the warhead of about 60 to 80 meters.

***In 2004, German weapons manufacturer Diehl BGT Defence announced their own supercavitating torpedo, Barracuda. (English translation) According to press reports, it reaches 800 km/h

manau kad zuvim teks prisitaikyti prie tokio naujo greituolio.bet manau kad daug avariju bus daug lavonu zuvu plaukios pavirsiuje :D bet jei atsitrenks i koki bangini tai abu issitaskys :/

ar neissoks visi banginiai ant kranto, kai tokie laivai prades po juras plaukiot?

26mln doleriu ? tiek turbut pentagonas skiria kavai savo valgyklose...

Paprastai kavitacija galima sukelti ultragarsu. Kokia dar kita amerikieciai gali naudoti neisivaizduoju