submarines
Latest
Russia launches its third 'world's quietest' submarine
Russian defense contractor Admiralty Shipyards launched the latest of its ultra-modern Varshavyanka-class diesel-electric submarines earlier this week. Dubbed the Krasnodar, this sub is the third of six its class. These vessels are primarily designed to hunt surface ships and other subs in littoral waters. They can't dive as deep or stay submerged as long as either modern nuclear subs or the Kilo-class submarines they're meant to replace. However, the Varshavyankas are armed to the gills with 18 torpedoes and eight surface-to-air Club missiles, according to reports from Russia Today. What's more, when running silent, the Krasnodar and its ilk are nearly impossible to detect acoustically, hence their NATO callsign "Black Hole." The first two Varshavyanka-class submarines, the Novorossiysk and the Rostov-on-Don, are currently undergoing deep-water testing and are expected to begin service to the Black Sea Fleet by the end of the year. There are currently no public estimates as to when the Krasnodar will join them. [Image credit: Admiralty Shipyards]
DARPA outs unmanned drone-launching sub, piracy suddenly less attractive
UAVs and UUVs may be unmanned, but they still need a ride to the mission area. Cue the Hydra: an undersea troop-carrier that transports drones. Unlike a submarine, this submersible can operate in shallow waters and charge the batteries of its pilot-free payloads as well as transmit collected data. Even more impressive, it can launch its flight-worthy passengers without surfacing. If this sort of thing turns your crank, head over to John's Hopkins University next month to catch a presentation from DARPA. If your security clearance is high enough, you can even snag a special classified meeting after the regular Joes leave.
Open source mini sub appeals to our inner Steve Zissou
Quadrocopters haven't exactly opened the skies for DIY exploration so much as they have for acrobatic feats, but the OpenROV project is hoping to make the briny depths friendlier for aspiring explorers and educators alike. The open source rover, spearheaded by NASA engineer and researcher Eric Stackpole, sinks to depths of up to 300 feet (100 meters), runs on eight C-cell batteries for approximately 1.5 hours and can clip by at three feet (one meter) per second. Within the laser-cut acrylic frame, a sealed cylinder houses a BeagleBone, HD webcam and LED lights. This all weighs in at 5.5 pounds and is piloted using a web browser and video feed. The footage is then piped up to a laptop that tethers the vehicle to the shore. Pre-orders for OpenROV 2.3 kits will be taken through Kickstarter later this summer at $750 apiece, though there are plans to sell fully assembled units. For now, explorers can register their interest at the link below and impatient Jacques Cousteaus will be pleased to know that all files necessary to build version 2.2 are available to download now.
Duke University's underwater invisibility cloak stills troubled waters
Everyone's jumping on the invisibility cloaking bandwagon these days, but no one's quite managed to fully deliver on the promise. The same goes for two Duke University researchers who believe their mesh casing could grant the gift of concealment to underwater craft -- submarines, anyone? According to the proposed model, a specially designed shell punctuated by complex patterns of permeability and millimeter-sized pumps would eliminate the drag and turbulent wake caused by an object as it moves through the water. Utilizing the penetrable gaps in the case, water would at first accelerate, and then decelerate to its original speed before exiting -- rendering the fluid around the object virtually undisturbed. Now for the bad news: the design doesn't quite work for large-scale, real-world implementations -- hello again, submarines -- since the tech can only cloak small structures, like "a vehicle one centimetre across... [moving] at speeds of less than one centimetre per second." It's a massive bummer, we know, but we're getting there folks -- you just won't see it when it actually happens.
Robotic yellow submarine finds massive river under the sea, tons of other trippy stuff
Researchers at the University of Leeds have employed a robotic yellow submarine to fund and begin documenting a massive river under the sea, known as a submarine channel -- the first ever directly observed. The river is so large that if it were on land, it would be the sixth largest river in the world. The torpedo-shaped autosub itself is a 23-foot long, unmanned craft which can be programmed to stay just safely above the channels where they'd encounter damage. It's equipped with an underwater speed camera which enable the team to observe in detail the flows within the channel. While little is known about what kind of lifeforms may lurk in these waters, the team's research puts science a little closer to understanding these unique rivers, and its full report will be published later this year in Geology. [Image credit: R. Flood, ]
UK defense firm pumps data through solid submarine walls
Wireless power may still be on the drawing board, but wireless data is here today, and a UK defense contractor has figured out a way to pipe the latter through several inches of steel. Using a pair of piezoelectric transducers on either side of a watertight submarine compartment, BAE's "Through Hull Data Link" sends and receives an acoustic wave capable of 15MHz data rates, enough to transmit video by essentially hammering ever-so-slightly on the walls. BAE impressed submarine commanders by streaming Das Boot right through their three-inch hulls, and while metadrama is obviously the killer app here, the company claims it will also save millions by replacing the worrisome wiring that's physically routed via holes in a submarine's frame. See the company's full US patent application at our more coverage link.
Submarines coming in Cataclysm
While we didn't get the full fledged Maelstrom expansion that some people were predicting, Cataclysm still promises to have some water-related content, such as the Abyssal Maw, the elemental plane of water. And where there's water, you need a boat. The recent Twitter developer chat revealed that we will, in fact, be using new transports to get to certain places in Cataclysm, and that these transport would be submarines, built by the gnomes and goblins for their respective factions.
Office of Naval Research patents "underwater GPS"
Being decidely land-dwelling creatures -- our only real underwater experiences were some nasty childhood dunking incidents at the local pool -- we've got no real use for determining our location beneath the waves, but apparently the folks who drive around all day in submarines do, so the US Office of Naval Research has whipped up a relatively simple method for "geophysical positioning" when satellite GPS data is inaccessible. You'll recall that we recently saw another patent which claimed to offer the same functionality for above ground, indoor locations, but that involved using surface-level receivers and ceiling-mounted repeaters -- a setup not possible when satellite signals can't penetrate deep underwater. The ONR's solution is to anchor an undetermined number of transceivers -- whose exact spatial location is already known -- to the ocean floor, and then by comparing the angle and distance of broadband acoustic signals sent back and forth to moving craft, using some basic geometry (sounds like our man Pythagoras comes into play here) to determine where in the world that sub happens to be. Seems pretty obvious when you think about it, but maybe that's we're covering this tech secondhand instead of trying to hack it as naval engineers, marine cartographers, or whoever the heck it is that comes up with this stuff.[Via New Scientist]
