Cesar Harada (28) is an French-Japanese inventor and entrepreneur. Cesar invented a ground-breaking sailing technology, a boat that changes shape, “Protei”. Originally developed to clean up the BP oil spill in the Gulf of Mexico, Protei is an Open Hardware project now developed by an international community of scientists, engineers and designers for many other applications such as nuclear radiation sensing off Japan, plastic sensing in the Pacific garbage patch, red tide studies in Mexico and much more. Cesar is also the general coordinator of the future International Ocean Station. Former Project leader at MIT, Cesar teaches Masters in Design & Environment at Goldsmiths University in London. Cesar graduated in 2009 from the Design Interactions course at the Royal College of Arts in London, his collaborative project Open_Sailing received the Ars Electronica Golden Nica award for the [NEXT IDEA].
Dear fellows. We just launch yesterday Protei on Kickstarter.
Please share the link to our Kickstarter on your facebook, or if you know people in - environmental justice
- sailing world
- DIY
- open-source
- engineering
Protei is a fleet of Sailing Drones, developed primarily to collect Oil Spills under Open Hardware licensing. An oil spill drifts down the wind, Protei sails upwind to collect the oil. Everyone is welcome to join, contribute, modify, produce, distribute the design and share their findings.
You can watch the 3 minutes video under to understand the detail of how it works :
The technology is really exciting beyond the fact that it could help for ocean study and cleaning. Have a lovely TED2011!
A few days ago, I was lucky to be on stage of TEDxMidAtlantic to present Protei, a technology in development I am working on with a bunch of brilliant people (especially Open_Sailing, randomwalks and V2_ folks). Protei would be a Fleet of Oil Collecting Sailing drones. I just made this 7 minutes video that explains how it works (also on youtube if you want to share / embed / rate). I am now working on the collaborative website and the documentation to meet Open Hardware standards - long way to go :) The video of the talk may come up sometimes, meanwhile you have my explanation here :)
Second post but first large map using the techniques of Grassrootsmapping.org for LA Bucket Brigade – thanks guys for putting this wonderful DIY technology together. So! In the late morning 22nd of July 2010, Hunter Daniel and myself went to map out of Port Sulphur, on these funky boats :
I traced this route with my mobile phone Google Nexus One and the fantabulous Open GPS tracker for Android – 4 stars rating! This is what we could see from the boat, kinda boring :
Soon after I launched a balloon and Hunter a kite out there, kinda exciting :
we captured nice pictures, here 6 details :
These 6 pictures were made using 270 stills… that was a 12 hours work on photoshop sincehugin (an open-source photo mosaic software) didnt do the trick – yet :/ Still working on it to automate the process and spend more time sipping mango juice In addition to what we had a bad GPS trace – my bad, I mean, it is good but I did’nt know where we started taking pictures on that route… Also the GPS time-stamp and the camera time-stamp did not match… So, here is the trick I found:
1. stitch approximately consecutive images with multiple layers on photoshop, when your shape takes shape you may guess where you are on the map. If you only have pictures of water, you can make a great water map … USELESS! BOOO! When your balloon/kite is up there, make sure it is flying over what you want to see, for us, the coast line – land and water. Wind is crucial, and because of the sun you want to avoid taking pictures when the sun is too high (reflection of the sky in the water).
2. produce a very high resolution map of the area. I didn’t want to do it all manually and I wanted to figure out a hack that would work on every platform (OSX, Windows, Linux), so here we go : - find your point of interest on any map system, write down the coordinates of the top left hand corner of the tile you want to produce. - go to http://pallit.lhi.is/bigice/bigpic.html , from here enter your Lat and Long (me : 29.468400, -89.911300), the zoom, number of tiles etc… hit “submit”. It will produce a huge map with a static URL. In my case the URL that produced the map (everything is in the URL PHP request) you see here : http://pallit.lhi.is/bigice/supergooger.php?lat=29.468400&lon=-89.911300&zoom=18&x_tiles=40&y_tiles=40
– now you have this huge picture, you need to capture it from your browser, download theScreenGrab! add-on for firefox only – but working on all platforms (download Firefox NOW if you don’t have it, you…!). Now, grab that huge picture with the tiny ScreenGrab! button at the bottom right corner of your browser, save as png or jpg.
3. Now, it is much easier to map with a support map! just keep adding layers on photoshop of all the pictures you took, adjusting, stretching, so it matches roughly google maps – you will often find that land shape changes, trees, rivers, buildings etc… that’s very exciting, this is why we are mapping : everything changes !
Ok, so now we have this huge empty map :
That’s another 6 hours work adjusting 700 pics layer by layer on photoshop ; hey, 270 images in 12 hours VS 700 images in 6 hours => see, it is much faster with a support map! We got that :
Don’t forget to put a scale and cardinal orientation + legal mentions. So, under your eyes that’s a 17000 x 17000 pixel map, made of 970 pictures taken at 1000ft altitude, depicting about 5 linear km of damaged coastline. Combining the 6 details views and the general map we could observe that the south side was much more exposed to the spill (more dark brown brrrrr). Using this map we could also establish that on the exposed side, even the inland waterways are strongly affected by the spill : we can use these maps to quantify the surface affected by the oil spill, and the mass of crude attached to the surface coastline. Now even cooler, you can see these maps on google earth, download the KMZ file here (dont worry it is a tiny file – all the content is online). FLY !
Apart from mapping this catastrophe – which is very useful for scientific study and for lawsuits against BP- why am I personally learning aerial photography? Well, because I am currently designing an oil collecting robot called “protei“.
Protei is a sailing semi-autonomous robot with a long oil absorbing tail. Surface oil drifts downwind, so Protei sails upwind, taking and taking, intercepting oil sheens. Imagine many many of these cheap machines out there in the ocean collecting oil
After some research …
I built a steampunk test machine that is pretty promising with a flexible hull front-steering :
We are also testing at sea the behavior of a long tail, and same, going pretty well …
See these little balloons on the surface of the water? And this is when aerial photography comes handy : to evaluate the efficiency and behavior of Protei, seeing everything from above helps a lot, I can see the trajectory, the movement of the tail, the interaction with oil. Also having a highly visible “flying flag” in the sky is amazing to optimize safety and long range communication (flying antenna)… Exciting no? And the challenge is here, millions of liters of crude oil gushing in the Gulf of Mexico, in the Niger Delta, in Latin America, the middle east, in Asia… Protei_Oil_Spill has a busy future!
Of course, just like grassroots mapping, Protei is developed open-source and collaboratively, so I hope that sometimes soon, Protei will come back to land with a lot of amazing pictures for LA Bucket Brigade and its amazing oil spill map, GrassrootMapping,Cartagen and Open_Sailing! I received most electronic parts for the next prototype of Protei_Oil_Spill this morning (YAY!), I am building in New Orleans, so if you are around, or if you want to help the project remotely, do get in touch – cesar@protei.org – thanks!
Seen from up there is so different from what you see from the water :
We went in those super cool (noisy though) boats :
Boat seen from the balloon (!!!) :
This is how it works :
So we do the same but with a helium Balloon flying at ~1000ft, with a camera attached to it, looking down, taking a picture automatically every 5 seconds or so :
I took a chance to try to enhance the "photography cabin" with Sue Stoessel, Bennie Gregory and Hunter Daniel (in a previous mapping trip though):
You see, it is just a bottle of soda and some duct tape, you can DIY it!
Now you may wonder why we take these pictures :
- for science study and evaluation of the impact of the oil spill on the coast and the marsh lands.
- for legal purposes, so we have evidences of the impact of the oil spill at the court of justice ;) I'm in love with this technique Gonzo Earth and Grassrootsmapping keep on improving, also because I really need it to assess the efficiency of the oil spill collecting robot I am working on : protei.org. Here we were testing to see how well we can sail the robot upwind with a long tail :
that's the robot I am prototyping this week :
If you want to help on the making of the protei robot, or do some aerial photography of the oil spill, get involved at LA Bucket Brigade, contact Shannon Dosemagen <shannon@labucketbrigade.org>, or Hunter Daniel <hunterdaniel@gmail.com> 901-550-7667 directly by phone to arrange a trip in the sun :)
This is NOT an Official TED video, it is simply an archive of the TEDxBoston Adventure.
What academic light can two Boston College professors shed on the nation’s largest environmental disaster? What lessons for oil extraction, transport, crisis prevention, and response can be drawn from this present calamity? Meanwhile, can a 2010 TED Fellow on the frontline in the Gulf contribute to the design of autonomous robots that collect oil? Join Boston College Professors Noah Snyder of the Geology and Geophysics department and Zygmunt Plater of the Law School for an interactive briefing on the situation in the Gulf. Professor Snyder is the Director of BC's interdisciplinary Environmental Studies program. Professor Plater served on the State of Alaska Oil Spill Commission during the Exxon Valdez crisis; he has been involved with Alaskan efforts to assist Gulf communities in the aftermath of the BP Gulf blowout and attempts to draw systemic lessons for the future from the Exxon Valdez and the BP blowout. We also will be joined via Skype by Cesar Harada, a former MIT researcher in New Orleans. Ask critical questions about environmental science and law, as well as some of Harada’s other ambitions, from creating the International Ocean Station as an open-source architecture project to crowdsourcing environmental data on the web.
Thanks to John Werner and Grier Tumas.
Devlin Hall, Room 201, Boston College, Chestnut Hill, MA, 02467
0. Acknowledgment 1. Context 2. Previsions of the day 3. Observations and difficulties for local sensing 4. Containment & Sorbent booms, wild life impact 5. Fishermen 6. Politics, Economic & Social 7. Health 8. Mapping 9. Bio-remediation 10. Hurricane season & Long Term Forecast 11. Sailing sorbent boom _11.1. Integrity _11.2. Deductive design _11.3. Three Orders of priority of response _11.4. Functions _11.5. Requirements _11.6. Intercept oil plumes _11.7. Sailing upwind pulling a long sorbent tail _11.8. Steering _11.9 Cheap inflatables, unbreakable, weight distribution _11.10. Self-righting _11.11. Electro-mechanics _11.12. Testing 12. Resigning from my laboratory, making it happen 13. Ethic and vision
1. Context
Field research + TEDxOilSpill + Design proposal "protei"
A month ago I started working at the MIT SENSEable city lab in Cambridge, Boston MA USA. I was asked to lead a research group (about 10 researchers) to develop a technology to address the on-going BP Deepwater Horizon oil spill in the Gulf of Mexico. After spending too much time in Cambridge (about 3 weeks) I went to study first hand what was happening in the Gulf of Mexico. This is a report of what I could observe the 24th and 26th of June around Grand-Isle and Venice and some notes of the TEDxOilSpill in Washington DC the 28th of June 2010. Some Images are also from the TEDxOilSpill Expedition and other permitted medias. My notes are made from the standpoint of view of a designer and researcher, so when I write, I focus on the information that may be relevant in the development of a technology and a design that could contribute the remediation of the oil spill. I want to stress that the observations I made these 2 days on the water are no longer possible : since July 5th approaching the buoys closer than 65ft ( 20meters ) has been criminalized and result a $40,000 penalty, and could be classified as a Class D felony. More than ever we need reliable informations about the current crisis, and paradoxically it is increasingly difficult to access information...
3. Observations and difficulties for local sensing
These are the main spots we were able to sample oil contaminated water and oil accumulated on the containment booms.
The water is very busy, so many boats, skimmers, converted shrimpers, barges, floating structures, static structures.
Each black point you are seeing on this map below is NOT the trace of an oil spill. Each point is an oil platform. Read again, yes. Only one 1 of these point failed, creating the most environmental trauma in the history of the continent. The Gulf of Mexico is "dangerous mess".
Image via <Chafic Kazoun>
And if you drive on land you will see the same thing : crude oil refineries everywhere. You will understand why Louisiana seemed to be more controlled by the oil industry than by the state itself. 30% of the USA needs in oil are covered in the Gulf of Mexico. About 50% of the US fishing industry happens in these fertile waters...
Back in Barataria Bay : it is very difficult to observe oil sheens or smell them (with our boat engine). Surface observation is difficult and expensive ; if we were to build a fleet of unmanned semi-autonomous drones, low cost local sensing is unlikely. We may rely on aerial observation (as the video below shows), high-altitude NASA reports, NOAA daily reports, crowd-sourced map, weather balloon shoreline reports and imagery mash-ups.
We did not have to sail very long to find one of these.
Accordng to an expert we met, this emulsion is typical of crude oil that has been treated with highly toxicoil dispersant Corexit EC9500A and EC9527A, produced by NALCO, a firm closely related to BP...
From experience, I can say that the contact with contaminated oil had no immediate effect on my skin. It is only 3 hours after I experienced very strong itching. At TEDxOilSpill, marine toxicologist Prof Susan Shaw from the Marine Environmental Institute confirmed effect of corexit to "dilate tissues and cause strong itching and perhaps skin damages".
These are my hands
These are my legs ... NOT ! I m much more hairy than that + I don't varnish my nails (forgot one!) to visit a spill! Skin rash and blisters after wading and walking in Mobile Bay, Alabama, on May 11. [source]
One of the main problem of the dispersant is that is changes the consistency of oil, and the droplets end up everywhere in the water column as this little experiment below demonstrates.
It is very difficult to state how much of the oil is in surface on in the water column. In fact a large underwater plumes have been observed by Sam Champion and Phillpe Cousteau JR (video below). Prof Susan Shaw also dived in the spill and reported air pollution that "feels like my throat was on fire". The spill is not only damaging the water, but also the already polluted air, Louisiana Bucket Brigade and the Louisiana Environmental Action Network has been monitoring air degradation before the oil spill. Between 10 and 75% of crude oil mass evaporates in ambient temperature, so monitoring air quality may be of high relevance to understand the extend of the incident.
Many of the islands we sailed around are natural reserves, mostly bird sanctuaries. This is the worst time of the year it could happen : "love is in the air" as Phillipe Cousteau JR said, this is the period of reproduction of many animals, including aquatic mammals like dolphins. Birds are the most spectacular victims of the spill, but with the extensive use of dispersants and the natural change of consistency of oil, a strong impact can be expected at the bottom, on the sea floor where it doest strongly damage invertebrates habitat. All the food web is affected, crabs, plankton, small, big fishes and ultimately humans.
Even if many natural reserves are protected by containment (red or yellow) and sorbent booms (white - clean, brown - saturated with oil), they are very affected by the spill. Here, the low/high tide brought the spill high enough to cover the island.
This was the cleanest containment buoy we came across. Everything is sticky and smelly.
Sorbent booms react very differently to different densities of oil :
1- This buoy just below was exposed to very liquid oil, oil is absorbed all the way to the heart of the boom, the weight increased enormously. In average a 3 meters long sorbent boom, 13 cm in diameter, absorbs up to 113 liters of liquid oil (absorbing about 25 times its own weight), for a cost of ~100$. That's 37 liters per meter, costing 33$ per meter. In large quantities the cost can surely drop. Important observation : the buoy saturated with liquid oil increase greatly in weight, at the point that some buoys sink in the water (!!!).
2- this other buoy (below) was exposed to very thick oil : only the surface is coated with thick oil, the heart of the buoy was still completely dry and white, unaffected. The buoy is very light.
In order to make sure the both - buoys filled with liquid oil (heavy) | and | - buoys covered with thick oil (light) I put both samples to dry for 3 days. Neither of them dried, so we could confirm that it is oil, and not another aqueous solution.
One of the main problem of the polypropylene sorbent buoys is that they are difficult to hold in place when clean and light, they fly around and get tangled. When they are saturated they dive and mostly disappear under the level of the water.
Since the islands are inhabited by a large population of birds, a lot of organic materials fly around the island, branches, leaves, algae and feathers that are the best organic oil absorbent known (like human hair), all mixed with oil.
When too close to the shore, buoys get washed on the rocks and get wrecked out.
These days, they are installing these huge barges anchored to the bottom with vertical trees. They pump the oil that runs across the surface in these massive trucks. This is only possible in shallow waters in moderate tropical storm conditions and there is a limited number of barges available, so it is great idea for this particular location, but doesn't really scale up. I also saw immense metal booms, basically steel tubes floating around.
5. Fishermen
As the sun comes down, oil skimmers are heading back home. Unmanned cleaning vehicles may not need to rest and could work continuously. I tried to speak to fishermen-cleaners and volunteers in Venice and Grand Isle but nobody would speak, too afraid to loose their jobs or expose their families. Nobody looked happy. FIshermen are generously paid by BP may they be collecting oil or not, many of them are being paid even if they stay in the harbor I was said. There is such a strange relation between BP and the coast guards as well, why anyone would still want to hide the truth when it is all about working together the clean the Gulf? What is left to lie about?
You can see that shrimping boats are using the same combination of containment and sorbent booms.
At TEDxOilSpill Latosha Brown underlined the affects of the oil spill is not only environmental but also directly on the people living in the area, energy trade, seafood, the culture of the region, tourism and national security. According to Brown "BP is acting like a superstate" and another recent leak of information brought out the fact that many Vietnamese fishermen, representing up to 50% of fishermen in Lousiana, were being paid less than the half of white and black american fishermen, adding racial discrimination on top of this all.
I know little about the social and economical effect of the oil spill on the US economy, because I focus on design. Many argued it was BP's fault, other pointed their fingers to the Obama administration, and some humbly declared that we were all collectively responsible for this, each of us being involved in oil consumption.
7. Health
Similarly, the health effects of the oil spill differ greatly if you are reading BP, local hospital or NGOs reports. The wikipedia article offers a satisfying range of the different viewpoints. As the demand in oil spill cleaners goes up, alarming articles state that most Alaskan oil spill Exxon Valdez clean up workers are now dead, with an average life expectancy of 51 years, dropping by 27 years US national life expectancy (78.4 years old). Still the cleaners have been required by BP not to wear respirators to "avoid spreading hysteria". Corporation public image matters much more than cleaners lives.
You dont need to work as BP cleaner to be affected, if you simply live in exposed area near the spill, or if you happen to be downwind on downstream, you will be affected. Many have reported that it has been raining oil inlands, farmers only start to report the effects of the oil spill on food culture.
If cleaning oil is too dangerous, a least dangerous activity is mapping, air, water, sediment and waste sampling, or simply reporting via SMS, MMS, email, posting pictures, videos what you see, smell or feel (symptoms)...
There are so many initiatives down there, you can also donate money or equipment, so many things you can do locally or from a distance.
9. Bio-remediation
There is a debate about "mother nature taking care of balancing this mess". The process described at the TEDxOilSpill by Prof. Ronald Atlas called bioremediation showed that fertilizer application can hasten the rates of oil removal following oil spillages. He has worked on several major oil spills and explained that dramatic oil spill effects may be negligible in about 10 years. Local population victim of the Exxon Valdez oil spill contradict the "negligibleness" Prof Atlas advocates 20 years after the spill. Also the Deepwater Horizon is happening at a much larger scale than the Exxon Valdez.
The hurricane season has already started, making the oil containment effort nearly impossible in stormy days. In 2005, hurricane Katrina path was exactly where Deepwater Horizon oil spill origin is located. This year forecast predicts an intense tropical storm activity. Population evacuation plans are now set, trying to not forget anybody behind. This year has the worst weather forecast since 2005, remember Katrina (175 mph - 280 km/h peaking winds!) :
We can expect tropical storms to transport oil inland. we cant have humans risking their lives on the water during the storm, and If we make drones, they must be hurricane ready.
On the other hand complex currents and winds make predictions very difficult, and the situation out of control, especially concerning less visible underwater plumes.
At MIT I tried to incorporate all these variables in the design of an oil recovery system. Unfortunately, in my department, the SENSEable city lab, my supervisors declared "it is too late to do anything for the on-going oil spill in the Gulf of Mexico", and they decided to focus on "future technologies for future oil spill" with very complex expensive robotics, absolutely wanting to include MIT developed oil-absorbing nano-fabric that may only be ready in 5 years for an estimated cost of 1000$ per square meter.
I believe it is still time to develop technologies to clean up the oil spill. We must try.
I have resigned from the MIT SENSEable city lab 4 days ago. It was a hard decision to make because : If you have MIT students and staff brain power, technical facilities and world respect, there is no better place to invent and get supported to implement a solution for the Oil spill.
I am moving to the Gulf of Mexico next week. I want to work with people that also want to work for real. I believe I will be more useful there, either developing the following design, or, contributing to on-going researches and initiatives.
11.2. Deductive design
The deductive research process and design proposal I am presenting below has been denied by my ex-lab because it is not a "future technologies for future oil spill", but an idea we may be able to implement as a product within a few weeks. I don't know yet how well/bad it would work, we need to test.
BP has already been sending many underwater vehicles to shut off the well valves, without success. Order 2 solution, capturing oil straight out of the gusher (ie. Top kill hat) are not entirely effective but they can significantly diminish the amount of crude before it reaches the surface. Both order 1 and 2 are achievable only if you have access to the origin of the spill (only BP), a fleet of underwater vehicles and an important budget, which is not the case for most, therefore I am focusing on order 3 solutions - collect the oil spill in the environment.
11.4. Functions
This is the chain of events necessary to make an autonomous oil collecting robot.
1. Sense oil As described earlier in the post, from experience on site, visual sensing of oil is very unreliable since oil comes in so many different concentrations and visibilities, from almost invisible surface sheen to thick brown "paste", to semi-solid tar balls. Video equipment (camera + pattern recognition to pilot the machine) is unreliable and expensive if the processing of the information was made on board. If the process of the image is made on land, after long distance video signal broadcast, the reliability and reactivity of the system would quite low and the cost very high. We use Fluorometer in ROV, but if you want to mass produce this machine, it might increase the price too much. If the machines are cheap enough to be produced in a great number we may rely on GPS : simply store the departure point and aim at one point in the center of the predicted spill, performing oil collecting maneuvers.
2. Collect oil There are many ways to collect oil, but as time is pressing I choose to re-confgure the technology we already have and that works best. What everyone's using both passively to surround and protect islands, as well as actively being pulled by oil skimmers is a combo of containment (yeallow or red) and sorbent boom (white when clean and light, brown when saturated with oil mostly under the surface). We can use the change of buoyancy of the boom (on top of water when empty - mostly under water surface when filled) to trigger a serie of switches that would say "empty" / "full" and send back the robot where it came from.
3.Extract oil In the future we can think of continuous extraction (watch video), but that would mean the machine is equipped of a "washing machine" that extracts oil and stores it in several tankers after processing without affecting how well the boat would sails (balance).
4. Process (crude) oil Processing crude oil is the refinery process. Just as the previous step, ideally this process happens as continuous distillation. Refining crude oil is a complex and dangerous process, that requires monitoring and present high risks of explosion, high maintenance, elaborate machinery, high cost. As far as I know, mass-producing mini-mobile refineries would be very expensive and could potentially transform every oil-collecting-robot into a mini oil spill of its own.
5. Re-purpose oil If a unit is capable of sensing, collecting, extracting and processing oil, it would be producing combustible (stored energy) on one hand and raw material (like asphalt) in the other hand. You don't want to use the oil you collect and process as main combustible to move your machine around, because for long periods your machine may not be exposed to enough oil to propel itself. Another propulsion system, like a sail, uses what is almost available and free all the time, wind. Similarly you don't want to accumulate and carry around asphalt or highly toxic materials.
MIT SENSEable city lab fro wants to make a autonomous robot that makes the 5 steps into one machine, so it is a very long term plan in the context of low cost swarm (many) robotics. I want to implement the technology now, because we need it now.
Locally sensing oil is expensive and kind of unnecessary if you have good predictions of oil spill (esc. step 1). You would only want to extract oil on board of the machine if you want to process it (refinery) but this is a very complex, dangerous and expensive process (esc. step 3,4,5). The quantity of oil that needs collecting is so immense that we need a technical solution that is simple and would scale up easily, so we can only focus on event 2. : collect oil.
11.5. Requirements
Collect a lot of oil, bring to a safe collector : ultimate goal, collected on land or to a large "mothership".
Unmanned : to avoid exposing human cleaners to toxic oil and gases. To operate day and night without interruption. To operate in hurricane conditions.
Self righting : boats do tip over. Only buoys, which have low maneuverability passive structures don't tip over.
Self steering : the machine needs to have high maneuverability, especially the capacity to go upwind, where the oil is coming from and stretches in long sheens.
Unbreakable : hurricane-ready design. Doesn't mean titanium strong, but perhaps lightweight and flexible
Autonomous : if we have electro-mechanic and electronic on board, the machine should have comfortable autonomy probably provided by solar panels and batteries.
Cheap : we have to protect hundreds of miles of coast, more than 6'500 km2 of spill, the machine needs to be simple, robust , reliable, cheap and easy to manufacture in order to scale up and deploy.
11.6. Intercept oil plumes
Current oil skimmers cut a clean line through a sea of oil. Even A whale super skimmer do not offer a large capture area while consuming vast amount of fuel to move around pulling booms.
The bigger picture is that in most case long oil plumes are going downwind, with superficial surface currents and waves. Therefore the best way to capture an oil plume is to go upwind. We must use the forces available. Use the force of the hurricane to capture the oil spill. If we go upwind and tack left and right, we may oppose the natural flow (near perpendicular interaction) and collect a fair amount of oil in the successive folds.
Now if we have many of these units we can work on the behavior and trajectories that allow more oil interception.
11.7. Sailing upwind pulling a long sorbent tail
So, in the end, it is about engineering a "propulsion head" to pull a long line of sorbent boom. Only a hydrodynamic profile could efficiently sail upwind.
11.8. Steering
If you are pulling a long tail, you are adding significant drag to your structure. A classical boat has an articulated rudder at the back to steer, and a center board at the center that acts like a pivot. Since we want to add the longest tail possible, steering at the back gets increasingly inefficient, so the idea here is steer at the front, not with a rudder but by changing the general geometry of the boat. It works as a series of vertebrae and required only a cable to steer.
Penguins (swimming vertebrate) and the fabulous AirPeguin by Festo uses this principles in 3 dimensions (also up and down):
11.9 Cheap inflatables, unbreakable, weight distribution
Inflatables are cheap, easy to mass produce, safe (they rarely cause damage in collisions), lightweight and of course float very well. In order to distribute mass and adjust buoyancy inflating with :
air : for the sail
water : for the hull
sand : for the ballast
may provide a very reliable, cheap and safe design.
11.10. Self-righting
In a hurricane context (winds peaking at 280km/h) it is vain to oppose wind. It is preferable to tip on the side momentarily, the sail would naturally "stick" to the water, meanwhile having enough ballast at the bottom to have the boat self-right to navigate again when there is bearable wind. A passive and flexible system.
11.11. Electro-mechanics
Steering such machine would only requires 2 winch step-motors : one to bend the "nose" of the boat left or right ; another one to sheet the main sail. We could add to the machine the high visibility flashlight at the top of the mast, the GPS receiver, an accelerometer, a circuit board for general control and to store the start point and destination coordinates. All electronics may be sealed dry near the mast by the center of the "boat". A large battery, recharged on land and solar panel maintained may provide energy for the electro-mechanics.
11.12. Testing
I made a quick and dirty test machine that was quite promising.
We (with David & Eugene Lee + Sey Min -> Korea Power team!) added to this test model a lot of stones at the bottom for ballast to sail in the Charles river in Cambridge MA. The mast was not only inflated, it was re-enforced with plastic plumbery tube.
Next steps : pulling a long tail and testing oil collecting trajectories + more extensive test of front steering.
12. Open source technology and manufacturing
There is still a lot of collaborative research to be done on the whole project "Protei" to see if it is a competitive proposition to collect oil, but in order to insure the future of the research.
This does mean that everyone is invited to use, make commercial use of the technology, but they must aknowledge they are building on top of our open-source technology licensing and themselves share their designs and advancements. This methods allows collaboration as well as commercial development of the technology, because we will definitely need more than one company to produce this, and a lot of caring clever people to develop and fork the technology.
You can follow and contribute to the development of Protei onhttp://protei.org. Hosted by Open_Sailing. Feel free to contact me <contact [at] cesarharada [dot] com> for more informations and/or to get involved.
As I said earlier, I resigned from MIT SENSEable city lab in Boston to move to the Gulf of Mexico where I believe I will be more useful to either develop this technology or contribute to existing projects. I am now looking for :
partner experts, university, inventors, sailors, RC boat hobbyist groups
a sail boat to test the idea and take the prototype to the oil spill
a workshop around New Orleans to fabricate more test models, ideally close to the water
contacts with local authorities to get permission to navigate and test prototypes
safety equipment (Hazmat + respirators) for our crew
Thank you very much for reading this long article, I hope it helped understanding the extend of the environmental challenge we are facing, and re-gain enthusiasm in the idea that we can solve this problem together.
