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88gear.comThe Best Entry-Level Wakesurf BoardsTop Picks for Entry-Level Wakesurf Boards If you are looking to get started wakesurfing and you need a board then your checking out the right place. We are going to cover some of the details and prices of the top entry-level surfers from 4 major wakesurf brands. Each board is at an entry price point and will be suitable for the whole family or friends to ride on. Let get things kicked off with one of the best selling and an all around awesome board. The Hyperlite Broadcast Board Price Ranges $349-$379 Details: The Broadcast shape provides great performance for any ability level. The Dual Concave base feature and new rocker line provide a fast responsive ride. It allows advanced riders to air out and generate speed for rotational tricks while beginner and intermediate riders can maintain the momentum and stay in the sweet spot of the curl. The Machined EVA deck pad provides maximum traction and is a feature usually reserved for the North Shore. MONOCOQUE CONSTRUCTION Integrating the top glass and the bottom glass into one. Generating a more durable board on side impacts to prevent delamination. LAYERED GLASS Our fiberglass is available in 3 weights depending on the board. Over time, traditional woven glass fibers will separate. With layered glass every Hyperlite deck will have the same pop off the double up year after year The Broadcast Wakesurf Board is available Here at 88 Gear The next pick comes from our friends at Ronix. It's at a great price point and serves as an all-around good wakesurfer. Use this board as a second option on the boat or for anyone starting out. The Ronix Marsh Mellow Wakesurfer Price Range -$439 - $399 Details A similar shape to our most high end performing deck – The Thruster – just constructed with a more impact proven layup. A soft top construction combines the best elements of speed, weight, and durability. Made with a similar core to our other more expensive surfers – this Thrasher has a unique glass lay up and a soft top exterior. The result is our most advanced recreational core to date since it has most of the performance and weight aspects of our surf constructed decks, the durability of a soft top, yet produced for surfers on a budget. Your board accidentally slams into the boat? No worries, its soft exterior won’t chip or ding your gel coat the way other traditional constructed decks will. We don’t want to play favorites – but if you’re reading this right now – this topwater traveling speedy, lightweight, durable series has a little soft spot in our engineer’s hearts. We spent four seasons developing this adjustable fin rope-less water device. KEY FEATURES: • Machined EVA top deck with kick tail• 2 – 2.3” & 1 – 2.9” Black Polycarbonate fins• Handmade by Robots• Vacuum bagged with epoxy resin Pick up a Ronix Marsh mellow Board Here Two awesome boards were just listed but there are still two to go. Up next is a broad from Liquid Force with a great shape for all weights and heights. It can even be used as an intermediate wakesurf board. Liquid Force Swami Wakesurfer Price $339-$299 This compression molded skim shape is designed for performance and fun, just like the wave in Encinitas, CA that it was named after. This board is for those that want a skim shape without the fragile high performance construction or price. The Swami is built to last and also built to perform at a high level. It features a rounded diamond nose and tail shape for control and lift when riding forward or reverse, a single concave for easy glide and a slotted channel through the tail for control. Ride this board as a true skim or attach the shallow twin fins for added drive. Buy the Swami Wakesurfer Here Here is our last pick from a smaller but well-known company in the USA. It's from Phase 5 Wakesurfers and it's an awesome board that can also be used as a intermediate board. It's also a top seller because you get a lot of board for the money. Most Phase 5 boards will be custom made and will have unique color patterns so not all the boards will look the same but they will all ride the same. The Phase 5 Oogle Wakesurf Board Price Range $599-$499 The Oogle has a forgiving smooth ride and is the best training board to learn wakesurfing on. The outline of the Oogle mimics that of a classic surf style longboard with its full round nose and long straight rail line. It has generous rocker up front to help overcome the common nose dive issue every beginner encounters. The Oogle was designed to be very stable allowing beginners to focus on the very basics of wakesurfing, yet it also has a fun lively ride experience riders will appreciate. It’s 3/4” foam core provides a floaty and stable platform with a single fin setup loaded with a 2” fin. You can purchase the Phase 5 Oogle and other Phase 5 Wakesurf Boards at 88 Gear Water Sports. Thanks for Checking out our top Wakesurf Picks we hope to see you on the Water.1
eog-asia.comPositive vista for energy, resources and marine sectors amid oil price hikes, trade tensions-report - Energy Oil & Gas Asia | Oil & Gas sectors, Petroleum news, Energy newsCompanies in the Energy, Resources and Marine sectors (ERM) are rebounding as oil and commodity prices continue to rise and global GDP growth is projected to increase 3.4% in 2019. Travel activity is also on the up, with air prices expected to climb 2.6% globally next year, according to the recently published 2019 Energy, Resources & Marine Travel Forecast. “After a few challenging years, we saw a slow but steady recovery in 2018. We look forward to a more positive outlook for the year ahead – though with a few big caveats,” said Raphaël Pasdeloup, Senior Vice President, CWT Energy, Resources& Marine. “We expect continued growth in energy, metals and minerals commodities, as well as shipping. But geopolitical tensions, including around trade and Brexit, and a host of new and untested governments, especially in Latin America, could throw this positive trajectory off-course.” “While these factors make forecasting difficult, we project air and hotel prices to rise nearly everywhere in the sector in 2019,” said Pasdeloup. ERM industry activity and investments are closely correlated with the price of oil and commodities. Tight crude supplies, exacerbated by US sanctions against Iran, beginning November 4, are projected to contribute to higher prices. Meanwhile, [...]1
topchaneloutlet.infoTravel Backpack Green 16L ⋆ Epeak OutletQuick Details 1. The shoulder strap and back have a thick air mesh padding 2. Have laptop sleeve 3. Earphone plug easy access Product Name: Designer Backpacks 16L Drawstring Daypack Laptop Backpack Material:Waterproof Canvas / Leather Colors: Green Size: 40 x 31x 13 cm (16L) Function:Suit for cycling, shopping, travelling, sport, go to school and so on. OEM/ODM: Support Self QC: Support MOQ: 100 pcs Style: Durable / Latest / Fashion Free Sample: Support Place of Origin: Taiwan Brand Name: Bagrun or OEM/ODM Model Number: BAG-B00004 Type: Cycling2
mhrestaurants.comTrain journey from Delhi to GoaA train journey from Delhi to Goa is one of the most affordable transport options that are available. Being the capital city of India, Delhi is well connected through railways across different parts of the country. Similarly, Goa is also a popular tourist destination and so is linked through railways from Delhi and also other important cities in India. Travelers who wish to have a relaxed transport time can opt for trains to Goa from Delhi. The journey is quite scenic and convenient. It takes around 28 to 30 hours to reach Goa from Delhi. In spite of the time, quite a lot of tourists opt for trains to Goa. For senior citizens, train travel can be quite convenient as they are relaxing. Air travel may involve some health issues for seniors and so most of them opt for trains to Goa. The Delhi route falls under the Norther Railway while Goa is served by the Western Railway. Both these are parts of the Indian Railways. The main station in Goa is located at Margao, which is quite close to the capital city of Panaji. After you get down at the station, you can avail numerous transport options to reach different parts of Goa. Margao is also close to Vasco, where the international airport is located. At Delhi, most of the trains to Goa start from the Nizamuddin station. Some of the trains that ply between Delhi and Goa are Goa Sampakranti Express, Kerala Sampakranti Express, Trivandrum Rajdhani express, Delhi Goa Duronto Express, and so on. On a minimum level, it takes 24 hours to reach Goa for non-stop trains like Duronto. Different classes of tickets are available. However, it is advisable that you go for the AC sleeper coaches as they are quite convenient and fitted with good amenities. Pantry services are also available in the trains. Booking a ticket in the trains from Delhi to Goa is also quite convenient. You can log on to the IRCTC website and book your tickets online by getting the PNR. The process is quite simple and hassle free. Alternatively, you can buy tickets from the counters in big stations. However, you may have to stand in a big queue during the rush hours. In some premium trains like Rajdhani and Duronto, you can specify your food options while booking the ticket. All in all train journeys from Delhi to Goa can be an enjoyable experience.1
propellers-drone.comQuadcopter Propeller Basics for Drone PilotsQuadcopter Propeller Introduction The purpose of your quadcopter propellers is to generate thrust and torque to keep your drone flying, and to maneuver. The upward thrust force generated by the propellers is usually measured in pounds or grams. To keep your drone flying at a hover, the upward thrust needs to equal the weight of your drone. The thrust to weight ratio TWR (thrust divided by weight), indicates how much thrust your drone generates relative to its weight. A good rule of thumb is to design the TWR to be at least a value of two. Typically, quadcopter propellers produce more thrust the faster they spin. They are also influenced by the flight dynamics of your quadcopter. Some propellers produce much more thrust when the drone is stationary, as opposed to when it is flying. Other props perform much better at higher speeds. Torque is generated when the propellers accelerate up or down. This force is responsible for the ability of the drone to rotate on the yaw axis. Torque is an effect of Newton’s third law, where every action has an equal and opposite reaction. As the propeller rotates, and pushes through the air, the air pushes back and causes a counter rotation on the body of the drone. This is why all of the propellers on a multirotor drone do NOT rotate in the same direction (see Figure 1). The counter rotation effect of all propellers cancels out, and you have no rotation. By changing the relative RPMs of the motors, you can cause a yaw rotation of the drone. Fig 1. Multirotor Propeller Rotation Your drone has two different types of propellers and motors. One set is designed to spin clockwise, while the other is designed to spin counter clockwise. Be sure to identify which ones are which. Quadcopter Propeller Pitch The quadcopter propeller pitch is a measurement of how far that a propeller will move through the air for every single rotation of the motor/propeller. This is only a theoretical approximation since real world factors such as prop material, air density, and efficiency can influence this distance. However, the pitch is a good measurement that will help you better understand your propeller performance. The higher the pitch value, the faster your plane will go. To better understand the effect of propeller pitch, imagine two wood screws as shown in Figure 2. The screw on the left has a coarse thread (higher pitch), and the screw on the right has a finer thread (lower pitch). If you were to take a screwdriver, and screwed both into a piece of wood by making sure you turn the screwdriver at the same speed for both screws, you would notice that the screw with the coarser thread (higher pitch), would sink into the wood more. Fig 2. Propeller Pitch This is the same effect as a propeller cutting through the air. In the figure, the two arrow lines show the position of the propeller tips. You can see that the high pitch propeller covers the same distance travelled with only half the rotation of the propeller. With both motors/propellers spinning at the same RPM, the higher pitch propeller will travel further in the same amount of time. In other words, the plane with the higher pitch propeller will fly faster. Changing the propeller pitch will also change the dynamic response of your quadcopter. To produce the required thrust, a quadcopter propeller needs to be designed to be within a specific range of pitch angles. An almost flat propeller will be just as bad as a steep pitched propeller, that is it will not generate any lift. The flatter the blade, the easier it is for the motor to rotate the blade through the air. Toy grade or low-end quadcopters are equipped with low power motors. These motors need to spin faster to create lift, but higher RPMs are easier to generate with a smaller motor than torque. Quadcopter Propeller Size The size of the propeller is the distance from tip to tip. Longer propellers can generate more thrust at the same speed, but requires more torque from the motor to turn the prop. A larger propeller size does not mean that you will be able to fly faster. That is mostly determined by the propeller pitch. The surface area of the propeller also determines how much thrust it can generate. The higher surface area allows more air to be moved, thereby generating more thrust. This also comes at the cost of more power draw from the motor. The length of your quadcopter frame determines the maximum size of propeller that you can use. This can easily be determined by taking the smallest of the length or width of your drone frame, and dividing by 2. Then you need to make this slightly smaller to provide rotation clearance between adjacent propellers. For a square frame configuration (see Figure 3), the maximum propeller size is X/2.For a rectangular frame configuration (see Figure 4), you take the smallest of the length or width dimension, in this case it is obviously Y, and divide by two, that is Y/2. Fig 3. Frame and Prop Size Fig 4. Minimum Frame and Prop Size Overlapping the propellers is not recommended since the downward airflow of one quadcopter propeller will reduce the thrust efficiency of the propeller below. There is also a bit of side to side airflow due to tip vortices, so you want to allow for some spacing between the propellers to avoid this effect. Number of Blades Two bladed propellers are more efficient at producing thrust as opposed to three or four bladed propellers (see Figure 5) so long as the tips do not reach supersonic speeds. For the purposes of quadcopter propellers, this is not a problem. Fig 5. Number of Propellers Adding blades increases the amount of thrust that is generated, but at the cost of efficiency. You will see many drones that have 5-inch triple blade propellers. The aerodynamic environment of drones negates the inefficiencies of tri-blades in the 5-inch size. Tri blades also have a higher torque generation which makes the yaw axis of the quadcopter much more responsive. There are 4, 5, and even 6 blade designs, but these have diminishing returns due to inefficiency. Propeller Material Propellers are usually made from a plastic compound, though carbon fiber propellers are also available. The type of material used to make the quadcopter propeller affect its stiffness and durability. Most hobby drone pilots are using durable plastic propellers that are slightly flexible and bend when your drone crashes. This allows them to last much longer, and save you money in the long run. These propellers have a disadvantage of causing vibration as they rotate, which can affect the flight performance of your drone. Carbon fiber propellers have a number of advantages, and disadvantages. They produce less vibration due to their stiffness, and sound quieter when flying. They are much lighter,and are stronger than plastic propellers. However, they are expensive, and the inflexibility means the motor bearings will take the brunt of the impact force on crashes. Propeller Weight For better flight performance, you want to go with lighter propellers as opposed to heavier ones. Lighter props have less moment of inertia, which means the motor needs to apply less torque to generate the same RPM. This also results in faster RPM changes which leads to better drone flight response.The weight distribution greatly affects the amount of vibration that the propeller will generate. A perfectly balanced prop will produce next to no vibration, while an unbalanced prop will affect the flight performance, and will sound terrible. Bull-Nose Propellers The more surface area that a propeller has, the more air it can push thereby creating more thrust. The downside is higher current draw, increased drag, and reduced power efficiency. Bull nose propellers are more commonly being used on modern quadcopters (see Figure 6). Fig 6. Bull Nose Propeller Bull-nose quadcopter propellers have a greater surface area, and create more thrust. Tapered propellers create less tip vortices, but sacrifices thrust as the propeller gets thinner. These are better suited for slow moving quadcopters where stability is more important for applications such as aerial photography. The added surface area of the bull-nose propeller means that you are adding weight, especially further away from the hub. This increases the moment of inertia of the propeller, and requires the motor to apply more torque, drawing more power from the battery. Bull-nose propellers are commonly used on small racing frames to gain a higher thrust at a smaller size. Quadcopter Propeller Sizing When selecting propeller sizing you need to understand the format that manufacturers use. There are two common formats that are used: LxPxB or LLPPxB. L represents the length, P is the pitch, and B is the number of blades. You may also see a BN designation that stands for bull-nose. You may also see an R or a C after the sizing numbers. The R stands for reversed, which is the rotation direction of the propeller. An R propeller needs to be mounted on a drone motor that rotates clockwise. A propeller with a C designation is to be mounted on a motor that rotates counter-clockwise. Folding Propellers There are many drones that are designed to highly portable so you can easily take them anywhere with you. To accomplish this, foldable propellers are included in the design (see Figures 7 and 8). Fig 7. Foldable Propellers Fig 8. Foldable Propellers At the high RPMs needed to generate lift to fly your drone, the outward force due to the motor rotation is sufficient to keep the propeller in its proper position. So, when you take off and jam the throttle on high, you can be sure your drone will fly. The foldable propellers are designed to maintain balance, so you do not lose any thrust generation efficiency. There is a slight advantage that a foldable propeller has that a fixed prop doesn’t. On a fixed prop, when you push the throttle to high, all the motor torque is transferred to the propellers. With a foldable propeller, there is a bit of an absorbing effect that helps to cushion the impact on your drone. This will quickly balance out and the full torque will be applied to the propeller. The cushioning effect is beneficial to reduce shock impact on the camera. Propeller Damage If your quadcopter has crashed, be sure to take a careful look at the propellers for any damage. A few scrapes on the propeller are ok, but flying with nicked propellers will make it nosier, and increase vibration. This will have the effect of shortening the life of the motors, since the bearings will rotate as if they are unbalanced. The quickest way to check for any damage is to run your fingers along the leading edge of the propeller. If you feel any major nicks, then it’s time to replace the propeller. Be sure to keep a few extra propellers on hand if they need to be replaced. Most quadcopters that you buy come with extra propellers. Remember, that there are two different directions that the propeller can rotate (see previous section). Be sure that you are mounting the correct propeller on the right motor. Propeller Thrust and Speed To know how much thrust a given propeller will produce, you must examine motor thrust test data which most manufacturers provide. The same propeller on two different motors can have vastly different performance due to variances in design, torque, power, and RPM. However, these bench tests are done in a static environment, and do not reflect the actual environment when your quadcopter is flying. Typically, you can expect to see 5 to 10% less thrust in real flight as compared to the bench tests. Be sure to take this into account when you are sizing your propeller and drone motor. Quadcopter Propeller Summary Hopefully this article has given you a better understanding of how the propeller specifications affect the flight performance of your drone. For the amateur drone pilot, you need to understand the sizing specifications so you can order the proper replacement quadcopter propeller. If you are building your own drone, then you will have a better idea of the options available to you as you select the propeller for your quadcopter. References RC Airplane World Carbon Fiber Props1
boyversusworld.comA Photo Journey Through the Wynwood Walls of MiamiYou may start to notice a recurring theme in a lot of my blog posts. When I travel, I love to visit places that have art. I love museums, the performings arts, and street performances. I also really love street and wall art. Street and wall art are normally free ways for everyone to enjoy different forms of art in an open and public setting. I visited Miami last year and the Wynwood Arts District is noted to be one of the top places to visit in the city. If you're looking for an interesting mix of art galleries, bars, eateries, live music and open-air markets that is just about in anyone’s price range you should definitely put the Wynwood Walls and Art District on your list of things to do. My sister and I went down to specifically look at the art since there are over 50 blocks of art scattered amongst all the neat restaurants, retail shops, trendy bars. Don’t worry, it’s definitely a place you can take your kids to visit and it’s really safe down there. Keep in mind that it kind of becomes 18-21+ once the sun goes down, so plan accordingly. Rather than explain every detail or give my opinion of the street and wall art in the Wynwood area, I decided to just show you in pictures and you can make up your own mind without too much of my bias in the picture. So without further delay, enjoy a view of the Wynwood District of Miami, Florida. [gallery ids=2591,2581,2569,2515 type=square columns=2] I thought this one was a bit cheeky as one photographer is taking a photograph of the other. I don't like to take too many photos when people are posed as I like to capture people in the moment without provocation from me to look a certain way. My sister like to move around a lot so it's hard to capture a queen bee in her natural element of being amazing. Don't forget to look down as there is even art on the street. Some people may call it graffiti but as I mentioned, practically everywhere you look in the Wynwood area, there is something somewhere that someone would call art. [gallery ids=2590,2573,2575,2574 type=square columns=2] [gallery ids=2586,2588 type=rectangular] Are you amazed yet? Oh but wait...there's more! Please click on each image if you're looking for a closer look with more detail. [gallery ids=2548,2534,2535 type=columns] [gallery ids=2572,2583,2537,2543 type=square columns=2] [gallery ids=2531,2570,2545,2532 type=square columns=2] One thing I will say is that since it's such a popular area, plan to circle the block for a while to find a parking space. What is also so cool is that the art is constantly changing so you might not be guaranteed to see the same thing twice each time you visit. The actual Wynwood Walls courtyard is marked/labelled and gated but you don't have to stay in the courtyard as it's actually pretty small with all the people trying to get photographs. So, make sure you venture out and walk around the majority of the blocks as almost every way you turn you'll find some form of art. We were there around two to three hours, so plan accordingly if you love art. I would most definitely recommend this as being worth a stop while in Miami. Even if you are not that into art, you can still find a cool place to eat or shop and can maybe even plan half a day or more in Wynwood. Leave me a comment on if any of the art pieces struck a chord with you or if you want to know any more details. Find a cheap ticket to your next destination right.......HERE! or enter your destination in the search box below1
travelandleisure.comThe Golden Age of Laguardia AirportBefore LaGuardia earned the infamous reputation as the worst airport in America, it was an impressive and attractive transportation hub. During the Gilded Age of air travel, LaGuardia pleased travelers and made New Yorkers proud. Check out what it looked like before New York Governor Andrew Cuomo called it "un-New York."
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argentina-airline-news.blogspot.comAerolineas Argentinas: Feeder Carrier for Domestic Flights ? - Austral New Aircraft by end 2018 - Long-Haul Aircraft to Oceania - Intercon Routes to StayAerolineas Argentinas President Mario Dell' Acqua spoke at the recent World Travel & Tourism Council conference held in Buenos Aires stat...1
propellers-drone.comThings to Consider when Choosing Drone PropellersLet us talk about FPV miniquad propellers! They are actually set of specially designed airfoils that radiates from some strong central hub that bolts into motor or engine of device. When we talk about quadcopters then these propellers work like wings for the aircraft. Types of wings attached to your tiny aircraft are going to make huge difference in its actual flight. So, if you are thinking to buy a new set of propellers for your drone then it is important to go into some deep details before selection. Below are few important things that demand your attention. Things to Consider when Choosing Drone Propellers 1. Type: Type Pros Cons Plastic They are Light in weight You will find balancing issue with this design Affordable choice They produce annoying sound and too much vibrations Carban fiber They suffer lesser vibration and produce minimal sound Too costly Lightweight construction They offer lower thrust as compared to plastic type designs Highly balanced design Flight time is lesser They offer high RPM with quick motor speed. If they crash, motor bearing will naturally take most of the impact. Highly resposnive / 2. Length and Pitch: Pitch can be defined as total distance travelled by your miniquad or drone with single rotation of propeller. For example, in case if we take 10x3.8 value then it means overall length is 10 whereas pitch is 3.8. Generally, propellers that offer lower pitches are able to produce more torque hence their motor naturally works with lesser current. Those who are using high pitch type prop with have different results. In this case, more air gets displaced and it naturally caused more commotion. With this effect, drone will face more vibrations and you will observe more shakes while hovering. Hence, it is advised to buy propeller that offer lower pitch. 3. Size: If you have a drone propeller with small size then it is much easier to control overall speed of your device during flights. This facility is not available with larger propellers. The reason behind uncontrolled speed of larger prop type drones is that they need more time to shift from one speed level to another. But in other case, smaller drone prop are able to offer higher RPM for motors. With this higher RPM rating, blades are capable enough to spin fast and thus UAV can manage impressive flights. Note that you must buy a motor that has lesser kV rating if you want to operate larger propellers. But in case if kV rating is high then it will suit to small sized props. Prefer to buy propellers with lower pitch values so that drones can stay stable in air. 4. Number of Blades: There is no doubt to say that you add more blades to your drone then its props will naturally have more thrust nut they actually become less efficient. The result is almost same as that of installing longer propeller. But if you have multiple blades then there is no need to install longer blades. Analysis says that tri blade type propellers are usually much better than that of two blade type props. Generally, tri blades type drone follow torque curve that ultimately makes yaw axis highly responsive. 5. Price: You can easily buy attractive multicolour type props; they are often available as pack of 4 or 2. While buying a new set, always make sure that your package contains equal number of clockwise and counter clockwise props. Generally, the plastic type props have price tag somewhere between $2 whereas for a set of 4, you have to pay $5. On the other side, the 3 plus bladed propellers use to be more expensive as compared to two blade versions. 6. Conclusion: After going through all these facts, we drive some important concluding points as: You can speed up a small sized prop with ease but larger ones take much time to shift from one speed level to another. One need to install motor with higher RPM for smaller props as they are able to spin at faster pace and can naturally develop perfect lifting mechanism. Lower kV type motors can easily deal with bigger props. If you require lesser vibration with higher stability then it is essential to move ahead with Those who wish to perform acrobatics in air will demand motor connection with small props as it can offer fast turning motor design. Anything below 8 inches will suit your needs in this category. In case if you want to organize flights with additional payload, like a video camera or gimbal etc then it is important to buy a larger prop with slower turning motor unit. Probably a 8 plus inch design will be best idea.1