Sunday, April 10, 2016

Foiling sailing boats


Fast ride for "Defi solidaire en peloton", shot with a drone 
with Thibaut Vauchel-Camus and David Fanouillère,
in Saint-Malo, Brittany, on Phantom catamarans 

Ben Ainslie Racing set a new speed record in Bermuda,
rippin' and runnin' at 30 knots, until the crash... 

The Gitana Team has turned his MOD 70 flying trimaran.
During sea trials of its new appendages, conducted in March, the boat with reinforced construction, reached 43 knots with 20 knots of wind on a flat sea.
This spectacular session of sea trials allows the racing team off to advance in research related to the development of the Ultimate GitanaMaxi (33 m), under construction for six months at the Multiplast shipyard (Vannes) and should be launched in the summer of 2017.

Saturday, April 9, 2016

SpaceX Falcon 9 launch with Dragon & successful landing at sea


CRS-8 | First stage landing on droneship
The company can land its rockets both on solid ground and at sea.


Today, SpaceX made history.
It is the first company—the first anybody to send a rocket to space and then land it on a floating barge.
Sixth time is the charm, apparently.
Persistence pays off.
Or at least, anyone with an interest in low cost access to space hopes it will.
The launch was flawless.

At 4:43pm ET, the nine engines on board the Falcon 9’s stage 1 rocket began pushing 1.53 million pounds of thrust against Earth.
After about two and a half minutes, and several hundred thousand feet of elevation gain, the first stage detached and began a controlled fall back to Earth, arcing towards the football field-sized barge (charmingly-named “Of Course I Still Love You”) in the Atlantic Ocean.

From The Verge by Loren Grush
  
SpaceX has finally landed its Falcon 9 rocket on a drone ship at sea, after launching the vehicle into space this afternoon.
It's the first time the company has been able to pull off an ocean landing, after four previous attempts ended in failure.
Today's success is a crucial milestone for SpaceX, as it shows the company can land its rockets both on solid ground and ocean. 


This is the second time SpaceX has successfully landed one of its rockets post-launch; the first time was in December, when the company's Falcon 9 rocket touched down at a ground-based landing site in Cape Canaveral, Florida, after putting a satellite into space.
Now that SpaceX has demonstrated it can do both types of landings, the company can potentially recover and reuse even more rockets in the future.
And that could mean much greater cost savings for SpaceX.

Mastering the ocean landing is going to be important, since that’s the type of landing SpaceX will probably conduct more often.
At a recent NASA press conference, Hans Koenigsmann, vice president of mission assurance for SpaceX, said the next two to three flights will involve drone ship landings.
Ultimately, the company expects to land one-third of its rockets on land, and the rest at sea.
 Rocket landing 'Another step toward the stars,' Elon Musk says 

Why does SpaceX keep focusing on these ocean landings?
A drone ship floating on the ocean is a harder target to hit than a large expanse of ground, since it is smaller and floating on moving water.
Plus, all of SpaceX's ocean landing attempts have resulted in the rocket exploding.
Still, landing at sea can be less tricky than ground landings, and the main reason has to do with fuel.
To return back to Earth, the Falcon 9 has to use the fuel leftover from takeoff to reignite its engines in a series of burns.
These burns help to adjust the rocket's speed and reorient the vehicle into the right position for entering Earth's atmosphere and then landing.

Different types of landing techniques require different amounts of fuel, though, and that revolves around how the Falcon 9 launches.
The rocket doesn't travel straight upward into space but follows a parabolic arc up and away from the launch pad.

Onboard view of SpaceX Falcon 9 rocket landing in high winds

Because of this, the rocket has to go through a lot to conduct a ground landing.
The vehicle has to slow down in the direction it's heading, completely turn around, and then retread the vertical and horizontal distance it's covered to get back to the landing site.
That requires a lot of extra fuel.
Ocean landings aren't as complicated as that. SpaceX's drone ship can position itself in an ideal place to "catch" the vehicle on its more natural path back to Earth.
That decreases the distance the rocket needs to travel, as well as the amount of fuel needed to maneuver the Falcon 9 for landing.

For SpaceX missions that use up lots of fuel, performing a ground landing may not even be possible.
Rockets that launch heavy payloads or go to a high orbit need extra speed during the initial ascent, and extra speed needs more fuel.
Those Falcon 9s that have to reach extra high velocities don't have as much fuel leftover for the landing.
That’s when the drone ship is the best — if not only — option for recovery. 

The whole point of landing these rockets is to help save SpaceX money on launch costs.
Right now, most rockets are destroyed or lost after they launch into space, meaning entirely new rockets must be built for each mission.
SpaceX hopes to recover as many rockets as possible to cut down on cost of creating new vehicles. The Falcon 9 costs $60 million to make and only $200,000 to fuel.
If a recovered rocket doesn't need too much updating and refurbishment between launches, reusability could eliminate a good chunk of that manufacturing cost.
SpaceX President Gwynne Shotwell expects reusable rockets to bring down launch costs by about 30 percent, according to Space News.
That would make the company's vehicles an even cheaper option for clients than it already is. 

Links :

Friday, April 8, 2016

Wireless iBubble underwater drone will revolutionize the scuba diving experience



From Forbes

iBubble, is the first autonomous and wireless underwater camera.
The iBubble drone camera follows your underwater outings, autonomously and in high-definition.
You become your own director, creating professional pictures.
 

iBubble is the brainchild of diver Kevin Delfour and tech enthusiast Xavier Spengler.
As they looked for a way to create quality submarine videos with minimal equipment, the idea of an autonomous camera that was able to follow and film divers underwater became evident.
The pair turned to Startup Maker to create the product (Startup Maker is the French startup studio behind Hexo+, the follow drone that raised $1.3M last year on Kickstarter). iBubble is currently being developed in France.


Early on in the development of the product, Guillaume Néry was pulled into the project.
Guillaume is a freediving champion (126m vertical depth), and filmmaker.
He currently is the company’s ambassador.
Free from heavy video equipment, you simply enjoy your dive.
The wireless iBubble follows divers and swimmers in the deep, thanks to its intelligent onboard software.
While silently capturing your submarine journey, it understands your way of diving.
Gliding with you, analyzing your moves, sharing with your friends what you see and where you are.

 Guillaume Néry : "Intelligent, it silently captures your submarine journey. It understands your way of diving. Gliding with you, analyzing your moves, sharing with your team what you see and where you are."

iBubble shadows you via a connected bracelet.
Smart and wireless, you can let it follow you while you focus on your diving.
Features on the iBubble include Follow me, 360° selfie, zoom in, zoom out and several filming mode.
Switch between them with a touch of your bracelet.

Connect your camera to iBubble for instant 2D or 3D video capability.
The camera comes to life when the drone touches the water and withstands depths of up to 230ft. Thanks to integrated LED lights that adapt to the ambient light level, iBubble captures quality video, always.

iBubble will follow you for 1 hour on one battery. Simply swap batteries for a longer outing.
Once the battery is empty, the drone automatically resurfaces.
LED lights make it easy to locate.
iBubble works with most action sports cameras, including GoPro® Hero.
No more bulky camera housing cases! iBubble keeps your equipment safe, in style.
With convenient handles, the drone is a breeze to transport on land.
Pre-sales for the iBubble start in February 2016, with working prototypes being shipped to testers in September 2016.
General sales will start in January 2017.

Thursday, April 7, 2016

NZ Linz update in the GeoGarage platform

8 nautical raster charts updated

Tiny island chain wants to create the world’s largest ocean sanctuary


An aerial view of Raivavae island in the Austral Islands of French Polynesia. 
John Frumm via Getty Images 

From HuffingtonPost byChris d'Angelo

The Austral Islands reserve, if approved, would be roughly the size of California, Nevada and Arizona combined.

In an effort to protect fisheries and preserve one of the planet’s healthiest marine ecosystems, communities in a remote archipelago south of Tahiti are working to establish the largest fully protected marine reserve on the planet.

 Austral islands with the GeoGarage platform (SHOM chart)

The proposal, which municipalities in the Austral Islands presented to the French Polynesian government on Monday, would ban fishing in more than 385,000 square miles of ocean surrounding the island chain and establish sustainable coastal fishing areas around each of its five inhabited islands.
The Pew Charitable Trusts, which helped the communities draft their proposal, said in an announcement on Tuesday that islanders hope the reserve will “help maintain healthy fish stocks to feed their families and support local fishermen while maintaining Polynesian customs that date back hundreds of years.”
The reserve, if approved, would be roughly the size of California, Nevada and Arizona combined.

A fisherman off the coast of the Austral Islands. 
The Pew Charitable Trusts  

Jérôme Petit, director of Pew’s Global Ocean Legacy campaign in French Polynesia, told The Huffington Post that the 6,000-plus residents of Rimatara, Rurutu, Tubuai, Raivavae and Rapa are concerned about the environmental damage affecting the world’s fisheries.
“They say, ‘We fish now in one day what we could fish 20 years ago in one hour,’” Petit said.

The reserve would extend roughly 200 nautical miles around each island, with the exception of the islands’ northern coasts.
Sustainable coastal fishing areas extending 20 miles from each island would allow local anglers to fish from boats that are less than 25 feet long, according to the proposal.
Petit told HuffPost that the “whole community is really on board” with the idea.
The only opposition, he said, came from large fishing operations in Tahiti, which rarely fish in the area but voiced concerns that the reserve would prevent them from doing so in the future.
According to the proposal, fish from Austral waters account for less than 2 percent of French Polynesia’s overall catch, so the reserve wouldn’t have much of an impact on commercial fishing operations.
“We are pretty confident it will go through,” Petit said by email.
“The only question is when. But since there is such as strong public support, the government will probably move forward rather quickly.”

 This map shows the extent of the proposed protected area around the Austral Islands.

The sanctuary’s proposed name, Rāhui Nui Nō Tuhaa Pae, or “the big rāhui of the Austral Islands,” is a reference to the traditional Polynesian practice of rāhui, which involves conserving a resource by restricting access to it.
“In the 1980s, we witnessed overfishing along our coastlines as modern fishing techniques and freezers arrived to our island,” Tuanainai Narii, the mayor of Rapa, said in a statement.
“We brought our fish stocks back to healthy levels by reinstating a coastal rāhui.”
Now, Narii added, the island communities have seen the threat facing the world’s oceans and “recognize that more must be done to conserve pelagic fish stocks.”
Global populations of scombridae, the family of fish that includes tuna and mackerel, declined 74 percent between 1970 and 2010.
According to Pew, the Austral Islands are a “hot spot of marine biodiversity.”
Of the 455 species of mollusks found there, 98 are endemic.
The islands are also home to numerous species of sharks, rays, corals and fish.

The Austral Islands’ proposal would establish sustainable fishing areas extending 20 miles from each of the chain’s five inhabited islands. 

By designating the marine reserve, French Polynesia would fulfill a commitment it made in 2013 to protect at least 20 percent of its surrounding waters by 2020.
The overseas collectivity of France is already home to the largest marine mammal and shark sanctuaries in the world.
The latest proposal simply confirms the islands are serious about leading the way in ocean conservation, Petit said in a release.
“A marine reserve of this magnitude would add to the growing movement by Pacific island governments to protect their waters to improve the health of the ocean,” he said.
Last year, New Zealand established Kermadec Ocean Sanctuary, the world’s third-largest fully protected marine area.
Currently, the world’s largest sanctuary is the United Kingdom’s Pitcairn Islands in the Pacific Ocean, which measures 322,000 square miles.
The Austral Islands’ reserve would be 63,000 square miles larger.

Links :