| Tango01 | 29 Jun 2016 10:24 p.m. PST |
"* Vessel travels inside a 'bubble' to reduce drag
* This allows it to reach supersonic speeds
* Technique could also be used to develop superfast swimsuits As swimmers know, moving cleanly through the water can be a problem due o the huge amounts of drag created – and for submarines, this is even more of a problem. However, US Navy funded researchers say they have a simple solution – a bubble. Researchers at Penn State Applied Research Laboratory are developing a new system using a technique called supercavitation…"
See here
link Amicalement
Armand |
| Lion in the Stars | 30 Jun 2016 2:52 a.m. PST |
As a former submariner, I'd want supercavitating torpedoes before supercavitating ships. Of course, the unsaid question is how in the hell do you see anything when you're going faster than the speed of sound in water? Sonar doesn't really work too well above 20 knots, let alone 2000. |
| Rubber Suit Theatre | 30 Jun 2016 4:15 a.m. PST |
For a torpedo, it would be analogous to a shell – firing solution determined before launch, and then it follows a predetermined vector. The weapon being faster than sonar and effectively invisible, the target would be unaware of the nearby launch until impact and would not normally evade. |
| Badgers | 30 Jun 2016 4:30 a.m. PST |
The speed of sound in water is shy of 1500 m/s, which is nearly 3000 knots! So no danger of supercavitating vehicles outrunning their own sound. |
| Badgers | 30 Jun 2016 4:33 a.m. PST |
I grant you, if the drag noise is hard to hear over at 20 knots, it's going to be a lot harder at 200 knots. And I misread your post, Lion. |
| wminsing | 30 Jun 2016 5:29 a.m. PST |
I've seen speculation that a super-cavitating vehicle could use a blue/green end of the spectrum lidar as a means of navigation. I admit I have no particular idea of how feasible this is. It's probably more(?) reasonable that a super-cat ship (as opposed to a torpedo) uses the super-cat mode as way to get into and out the operational zone and otherwise operates like a 'regular' submarine. 2300 AD I think had 'sub fighters' that operated on this sort of principle; super-cat was used sparingly and otherwise the sub fighters operated *very* quietly. -Will |
| wminsing | 30 Jun 2016 5:31 a.m. PST |
Aha, found the 2300 AD stuff: link link One possible model for how these sorts of ships might operate. -Will |
| David Manley | 30 Jun 2016 7:06 a.m. PST |
"Researchers at Penn State Applied Research Laboratory are developing a new system using a technique called supercavitation" New as in "several decades old"? Must have taken an absolute age for the research grant paperwork to get through :) |
| GROSSMAN | 30 Jun 2016 7:11 p.m. PST |
That should be cheap to do… |
| Lion in the Stars | 01 Jul 2016 11:27 p.m. PST |
Must have taken an absolute age for the research grant paperwork to get through You must be new to government contracting…  |
equips his Israeli recon unit.
