Please select your home edition
Edition
Jeanneau AUS Sunfast 728x90

Shanghai to San Francisco in under 2 hours via supersonic sub

by Stephen Chen on 30 Aug 2014
. .
China has edged a step closer to creating a supersonic submarine that could travel from Shanghai to San Francisco in under two hours and this technolgy could find its way into racing yachts. It has nothing to do with cruising whatsoever, its just an interesting read.

New technology developed by a team of scientists at Harbin Institute of Technology's Complex Flow and Heat Transfer Lab has made it easier for a submarine, or torpedo, to travel at extremely high speeds underwater.

Li Fengchen, professor of fluid machinery and engineering, said the team's innovative approach meant they could now create the complicated air 'bubble' required for rapid underwater travel. 'We are very excited by its potential,' he said.

Water produces more friction, or drag, on an object than air, which means conventional submarines cannot travel as fast as an aircraft.

However, during the cold war, the Soviet military developed a technology called supercavitation, which involves enveloping a submerged vessel inside an air bubble to avoid problems caused by water drag.

A Soviet supercavitation torpedo called Shakval was able to reach a speed of 370km/h or more - much faster than any other conventional torpedoes.

Some years ago Australian Sean Langman set out to build a world speed record sailing craft using this technogy, with design work done by Andy Dovell, of Murray, Burns, Dovell . The project did not proceed but the application was recognised.

In theory, a supercavitating vessel could reach the speed of sound underwater, or about 5,800km/h, which would reduce the journey time for a transatlantic underwater cruise to less than an hour, and for a transpacific journey to about 100 minutes, according to a report by California Institute of Technology in 2001.

However, supercavitation technology has faced two major problems. First, the submerged vessel has needed to be launched at high speeds, approaching 100km/h, to generate and maintain the air bubble.

Second, it is extremely difficult - if not impossible - to steer the vessel using conventional mechanisms, such as a rudder, which are inside the bubble without any direct contact with water.

As a result, its application has been limited to unmanned vessels, such as torpedoes, but nearly all of these torpedoes were fired in a straight line because they had limited ability to turn.

Li said the team of Chinese scientists had found an innovative means of addressing both Read the full story

Beneteau PWR GT46 660x82 1Jeanneau Sunfast 660x82BandG AUS Zeus3 660x82

Related Articles

Int Moth Worlds - Zhik returns to its spiritual home at 2017 Worlds
Zhik is returning to its roots as the official clothing sponsor of the 2017 McDougall McConaghy Moth World Championships Zhik, the innovative sailing apparel specialist, is returning to its roots as the official clothing sponsor of the 2017 McDougall McConaghy Moth World Championships. And, ten years on, the Moths are returning to their spiritual home on Lake Garda. Zhik and the International Moth class are virtually synonymous with each other.
Posted on 20 Jul
Multihull Central adds Privilège catamarans to its exclusive lineup
Multihull Central continues to go from strength to strength with prestigious French shipyard Privilège Marine Multihull Central continues to go from strength to strength with prestigious French shipyard Privilège Marine choosing the Australian company to exclusively represent its range of cruising sail and power catamarans in the Australian and New Zealand markets.
Posted on 20 Jul
New Jeanneau Sun Odyssey vessels added to the range
Since their launch the Jeanneau Sun Odyssey range has sold over 17,000 yachts. Since their launch the Jeanneau Sun Odyssey range has sold over 17,000 yachts. Now we are excited to introduce to you the new generation, the Sun Odyssey 440 and the Sun Odyssey 490. This new generation of sailboats is clearly high performance utilising multiple advance in design and technology to better enhance your quality of life at sea
Posted on 19 Jul
Beneteau showcases new models at this year's Sydney Boat Show
Beneteau has a very impressive display of seven sail and power boats, including three models on show for the first time The new sailing boats on display are the Oceanis 41.1 and Oceanis 38.1 , which set a new standard in cruising comfort, safety, ease of sailing and volume plus the ever popular Oceanis 45 and the unique Sense 50/51.
Posted on 14 Jul
Bavaria C65 - production commenced on their largest ever sailing yacht
The Bavaria C65 is the new flagship of the Bavaria Yachts fleet of sailing yachts The Bavaria C65 is the new flagship of the Bavaria Yachts fleet of sailing yachts and, following the successful presentation of the Bavaria C57 this spring, is the next logical step in the expansion of the Bavaria C-Line. It is the largest yacht ever built by Bavaria Yachts. Production of the Bavaria C65 has already begun. The first sea trials are planned for the (Northern) Autumn (Fall).
Posted on 14 Jul
Jeanneau 51 to Première at Sydney International Boat Show
The new Jeanneau 51, the latest addition to the Jeanneau Yachts range... The new Jeanneau 51, the latest addition to the Jeanneau Yachts range, is the luxurious result of a teaming of renowned naval architect Philippe Briand and superyacht designer Andrew Winch. Following the successful launch of the Jeanneau 54 at the 2016 show, the first of the 51 models will be on display for the first time in Australia
Posted on 14 Jul
Four weeks until 50th Sydney International Boat Show opens
The show returns fully to Darling Harbour coinciding with the completion of the new International Conference Centre. In what will be a special year, the show returns fully to Darling Harbour coinciding with the completion of the new, purpose built International Conference Centre-Sydney facility.
Posted on 6 Jul
X-Yachts announce the new X49 as the latest member of the 'X' range
In 2016, X-Yachts launched the new pure ‘X’ range which included the X4³ and the X65.  In 2016, X-Yachts launched the new pure ‘X’ range, which included the X43 and the X65. This range was exceptionally well received by both press and clients, with more than 50 yachts sold in the first year. The ‘X’ range incorporates the best elements from both the Xcruising range and the Xperformance range into one beautifully designed performance cruiser
Posted on 6 Jul
Watch Change in Crosshaven - UK Sailmakers under new command
'Our strength has always been service, quality and people. Right now, they are Graham, Claire and Barry.' The famous Crosshaven loft that is part of the UK Sailmakers organisation will shortly have a new crew on deck. Barry Hayes, Claire Morgan and Graham Curran are taking over from Des McWilliam who is stepping down after 39 years in the business and 25 years at the helm of McWilliam Sailmakers.
Posted on 3 Jul
Swan 95 LOT99 preview at Cannes Yachting Festival & Monaco Yacht Show
The new Swan 95 LOT99 is a versatile, high performance yacht that combines superior cruising capabilities The new Swan 95 LOT99 is a versatile, high performance yacht that combines superior cruising capabilities with the inimitable style and quality Nautor’s Swan is renowned for. Cutting-edge hull lines in elegant forms, sporting luxury and timeless class, such as only Frers and Nautor together know how.
Posted on 29 Jun