uncleflo
Registered since September 28th, 2017
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Tag selected: wind.
Looking up wind tag. Showing 15 results. Clear
Interesting Sailboats: SOLAR PANELS ON SAILS
Saved by uncleflo on February 13th, 2022.
I don't sail but this idea interests me. Why couldn't a turbine of some description be fitted to the underside or even integrated into the keel to add to energy produced That is called an hydrogenerator and many oceanic sailboats use them. On the Vendee Globe, the non stop sailing race around the world most boats have two. They are expensive, with a price around 4/5000 euros. Finally somebody is working actively in what seems to be an obvious way to generate electric electricity on sailboats: Photo-voltaic sails. Till now the technology did not allow for panels flexible enough to allow that but on last years the technology has evolved a lot. It is already possible and it will not be expensive in the future. At least a sail manufacturer is working already actively on that, the UKsails France branch.
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Arvel Gentry | North Sails
Saved by uncleflo on April 10th, 2021.
In the first edition of the Art and Science of Sails, written by Tom Whidden, president of North Sails Group, LLC, and Michael Levitt, and published by St. Martin’s Press, the authors used Arvel Gentry’s now famous Bathtub Experiment to demonstrate the existence of Circulation, or a second force, that operates around an airfoil, like a sail, wing, or keel etc. Big picture: it’s the combined effort of these two forces that makes the wind speed up on the leeward side — and thus show low pressure — and slow down on the windward side of a sail — high pressure. Gentry was the Boeing engineer who first taught sailors aerodynamics. These diagrams first appeared in Gentry’s Sail magazine articles. In the Revised Edition, the authors used computer testing to show where the wind speeds up around a sail plan and where it slows down. And why and by how much? Nevertheless, Gentry’s experiment is the standard — still popular on the web — and it was left it out of the Revised Edition with trepidation, but we linked in the book to this web page.
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Google Canvey Island Weather
Saved by uncleflo on April 10th, 2021.
14-day weather forecast for Canvey Island. Canvey Island weather station, live weather conditions, 7 day forecast, rain radar, tide times, Thames shipping tracker, archived weather data.
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LiFePO4 12V400Ah Lithium Iron Phosphate Battery Pack, Light Weight LiFePO4 Battery for RV, Solar, Marine, and Off-Grid Applications (NO BMS)
Saved by uncleflo on December 19th, 2019.
RUIXU LiFePO4 Battery Deep cycle Rechargeable Lithium Iron Phosphate Battery
THE HIGHEST QUALITY LITHIUM IRON PHOSPHATE TECHNOLOGY,THE FARIEST PRICE ON THE MARKET
In most standard 12, 24 or 48 volt systems the best choice of lithium battery is LiFePO4 (lithium Iron Phosphate).
The voltage of this type of battery is very similar to an AGM and will work great with readily available system components for your RV, Boat or Off-grid power system.
Backup and Off Grid Battery Packs Using Superior Lithium Iron Phosphate (LiFePO4) Cells - the next Generation of Energy Storage
APPLICATION:
Boats/Kayaks/Marine: RUIXU LiFePO4 batteries offer tremendous advantages for powering small boats and kayak motors.
Communications Equipment:Many of our customers are using LiFePO4 batteries to replace lead acid and NiMh batteries for radio communications equipment including ham radio. E-Bikes / E-Scooters / Small Vehicles:Many of our customers are using LiFePO4 batteries for e-bikes/e-scooters E-wheelchair to replace lead acid batteries. Electric Golf Cart:RUIXU LiFePO4 batteries can be used to power electric golf caddies which are used to carry golf clubs across golf courses.Lithium Iron Battery for RV | Marine | energy storage | backup system | popwersports | Eletric vehicle | solar| UPS |forklift | motor home |camping car |boat |caravan |wind energy | telecommunication systems |cabins. Energy Storage: LiFePO4 batteries when combined with converters and inverters can be used as an energy storage solution.cabins battery,wind energy battery,telecommunication systems battery,off grid system battery.
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Learn to Sail – Red Sea Sails
Saved by uncleflo on December 17th, 2019.
Red Sea Sails was founded by a group of friends who share the vision of building a sailing environment in the stunning Red Sea. A long time ago, sailboats shaped the history of the Red Sea. Today, replaced by motor vessels, sailboats are almost non-existent. Red Sea Sails recognizes the potentials of the ideal sailing conditions and the ecological benefits sailing will have on the Red Sea. Red Sea Sails finds the Red Sea constant wind, all year-round temperate weather, rich marine life, magical desert coastline and nearby Egypt’s world-class archeological sites allow for an unforgettable sailing experience. It is a privilege to sail in the Red Sea.
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Windy: Wind map & weather forecast
Saved by uncleflo on October 11th, 2019.
I am an addicted kiter, helicopter and jet pilot who seeks the wind, waves, METARs and powder snow almost constantly. Since programming is my passion, I coded Windyty.com in 2014 as my pet project. The original version was highly inspired by the products from the Swiss company Meteoblue and other project called "Earth", that displayed animated wind particles on the globe. I have completely rewrote open source codes of Earth and also made an agreement with Meteoblue to use some of their products that time. And thus Windyty was born (renamed to Windy a few years later). My goal is to keep Windy small and fast to be accessible in the most remote locations.
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Replica Frigate Shtandart
Saved by uncleflo on November 29th, 2018.
The Frigate Shtandart is the exact replica of the man-of-war built by Peter the Great in 1703 in order to defend Saint Petersburg. Modern Shtandart was built in 1999 is a functional training tallship. While at maritime festivals in European ports, Shtandart always compels very close attention of the public. And her crew has the opportunity to visit various celebrations and concerts, stroll along the streets of seaports, and communicate with like-minded people from different countries. Professional, safe and economically viable, the Frigate Shtandart is crewed by a core of young trainees and takes part in Tall Ship events, Maritime Festivals and visits various Ports as a Russian Ambassador. Nowadays everyone can meet with this living history vessel and gain a unique experience if becomes a member of Shtandart’s crew. Sailing aboard a real wooden tallship is a fascinating adventure in the atmosphere of the old times and also a new experience, a lot of impressions and the opportunity to meet interesting and keen on sea people. All members of the crew have an active participation in naval life and sailing the tallship.
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Wind Turbine Design
Saved by uncleflo on November 28th, 2018.
Primary objective in wind turbine design is to maximize the aerodynamic efficiency, or power extracted from the wind. But this objective should be met by well satisfying mechanical strength criteria and economical aspects. In this video we will see impact of number of blades, blade shape, blade length and tower height on wind turbine design. The next big factor which is affecting performance of wind turbine is shape and orientation of blade cross section. A moving machine experiences fluid flow at a different velocity than the actual velocity. It is called as relative or apparent velocity. Apparent velocity of flow is difference between actual flow and blade velocity. Absolute velocity of the flow is shown in first figure, while apparent velocity in the second figure. It is clear that apparent velocity of flow is vectorial difference between actual and blade velocity. The vector difference is shown in the first figure at a particular cross section. A rotating blade will experience an apparent velocity of flow.
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Hydro Generator
Saved by uncleflo on September 14th, 2018.
The hydro generation or “creating energy while sailing” function is an automatic feature in all Oceanvolt motors. This feature is activated by pushing the button on the Oceanvolt displays for 5 seconds. The display will automatically switch to regeneration mode showing the current generated power, RPM and time until the batteries are fully charged. With a normal folding propeller the motor kicks the blades out and centrifugal force combined with the motor controller keep the blades open. The motor controllers tune the system actively at 10 Hz which prevents the blades from closing (too much braking would close the propellers). This is continuous monitoring, the system will adjust the propeller RPM depending on the boat speed.
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On the Comparison of the Long Penetration Mode (LPM) Supersonic Counterflowing Jet
Saved by uncleflo on December 7th, 2016.
Classic tonal screech noise created by under-expanded supersonic jets; Long Penetration Mode (LPM) supersonic phenomenon -Under-expanded counter-flowing jet in supersonic free stream -Demonstrated in several wind tunnel tests -Modeled in several computational fluid dynamics (CFD) simulations; Discussion of LPM acoustics feedback and fluid interactions -Analogous to the aero-acoustics interactions seen in screech jets; Lessons Learned: Applying certain methodologies to LPM -Developed and successfully demonstrated in the study of screech jets -Discussion of mechanically induced excitation in fluid oscillators in general; Conclusions -Large body of work done on jet screech, other aero-acoustic phenomenacan have direct application to the study and applications of LPM cold flow jets. For the Oral/Visual Presentation in which this video was presented, please see the following link in the NASA Technical Reports Server (NTRS, http://ntrs.nasa.gov): http://hdl.handle.net/2060/20150016244
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earth :: a global map of wind, weather, and ocean conditions
Saved by uncleflo on October 15th, 2016.
A visualization of global weather conditions, forecast by supercomputers, updated every three hours. Ocean surface, current estimates, updated every five days, ocean surface temperatures and anomaly from daily average (1981-2011)
updated daily. Ocean waves updated every three hours.
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Vertical Axis Wind Turbine Information: How Efficient are Vertical Axis Wind Turbines compared to Horizontal?
Saved by uncleflo on September 8th, 2016.
Are you looking to build a wind turbine, or to buy a windmill, and you want to know whether it is better to get yourself a vertical axis wind turbine or a conventional horizontal windmill? It is a good idea to educate yourself on the differences between vertical and horizontal axis wind turbines. Obviously, you want to get the one that has the best return on investment, whether you will buy a wind turbine or build it yourself.
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Google Patents - Variable speed wind turbine
Saved by uncleflo on April 5th, 2015.
A variable speed wind turbine is disclosed comprising a turbine rotor that drives an AC induction generator, a power converter that converts the generator output to fixed-frequency AC power, a generator controller, and an inverter controller. The generator controller uses field orientation to regulate either stator currents or voltages to control the torque reacted by the generator. The inverter controller regulates the output currents to supply multi-phase AC power having leading or lagging currents at an angle specified by a power factor control signal.
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Section Bending | Bending Specialists - Sjølund A/S
Saved by uncleflo on September 16th, 2014.
Our clients consider us to be a credible partner with an interesting relationship between price and service, also by individual pieces. You will find our references throughout Europe and beyond in the world, e.g. in the German Bundestag in Berlin, at the streets of Gothenburg or out of Bermuda.
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On Days Like This It's Best to Avoid Surfing Nazaré, Unless You're These Guys | Into the Wave, Ep. 1 - YouTube
Saved by uncleflo on July 16th, 2014.
There isn't much that Sylvio Mancusi can't do in the ocean. From surfing to kitesurfing to SUPing to towing in this Brazilian sea gypsy never met a set of wind and swell conditions he didn't like. He travels the world with his young family searching for big waves and favorable filming conditions in which to ply his trades. This week Sylvio and the fam rock up in Nazaré, Portugal for a big swell. Praia do Norte is known for giant waves, but it's not known for perfect waves. Sylvio and Garrett McNamara spend their session trying to find a few peeks without getting cleaned up in the process. It's hair-raising stuff. That would be the end of the video for most people, but Sylvio is not most people. When the wind picks up he takes the kite out in 40-knot offshores and horizontal rain. It aint pretty but it sure looks fun. Maybe not for Sylvio's long-suffering wife, Bia, though. She's stuck in the car complaining about how crazy he is. Behind every great man...
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