Altering the ekranoplan

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Winter continues and I continue to prepare for spring. I redid the ekranoplan. He lengthened the front wing by 18 cm to get a little more lift and redesigned the cockpit. Moved the cockpit forward a little to move the center of gravity a little forward. I think this will solve some of the problems that arose at the maximum speed of the boat. I also hastily made a 3d model of the boat as I see it, ideally, and I want to make a new boat if the tests go well and the result satisfies me, then the next boat will be more licked and other materials will be used in it. But this is still only a dream, but for now I am looking for a more powerful motor for testing, if I cannot find it, then I will have to rent again the one that I took last time. Power is not enough for him, but I think it will do for the next experiment. Photos of the model and video of the alteration of the ekranoplan below.

My new boat Streamlined beauty

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After building several classic square-shaped airboats, I decided to make the boat more streamlined and pointed. I understand why classic airboats have such unpretentious shape, it’s all about practicality, but I am an impractical person, I am an artist by nature, and since I idolize the design of the era between the two world wars of 1920-30, I chose the form characteristic of that era. I was inspired by such beautiful boats as Bootleggerboat and Miss Canada 4, so I decided to cross the streamlined boat hull and the propeller engine. Since I am constrained in the possibilities, I managed with what I have, that is, a low-power 21 horsepower engine, and picked up a small streamlined body for it. I chose a drawing of a boat made by William Jackson, the famous American designer who designed a boat called Dragonfly. A small teardrop seaplane for one pilot and an outboard engine. I redesigned the entire rear end by adding another frame and changing the transom to accommodate the propeller-driven paramotor engine. I made the hull of plywood pasted over with one layer of fiberglass, and I sheathed the boat deck with pine plywood and varnished it. The boat has two seats, one behind the other. Steering is carried out using a steering wheel connected to an aluminum tail, designed in the same style as the body. The boat turns out beautiful and impetuous, I like its appearance and I hope you too.

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The second stage of boat building

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Well, the new year is approaching and I am already at the final stretch. Over the past month, there has been little work and using idle time at work and weekends I managed to sheathe the boat with plywood. With a triple made of pine, I sheathed the top and sheathed the bottom and sides with a six millimeter birch. I polished everything and covered it with fiberglass. My friend Roland helped me with this. I also chose a color for the bottom and sides – it will be ruby red. I’ll cover the deck with clear varnish. I painted the bottom in three layers, now it remains to turn the boat over and finally process the deck and cover the bottom of the boat with varnish, after which you can start assembling the engine and tail, which I also made in parallel from aluminum. I think not to paint the tail, leave it aluminum and just draw the number 41. In general, if everything goes well and no excesses happen, I can finish all the processing of the boat and the installation of the engine by the middle of next month, after which I will only have to wait for spring. I would like to finish this boat as soon as I want to do the alteration of the ekranoplan. There are plans to redesign the cockpit and front fender. For summer trials. The only truth is if I can get the engine. Photos of the work done below.

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New boat

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Autumn is in full swing and all boats are laid up. The ekranoplan is disassembled and the motor is removed. With God’s help, I have mastered all my affairs planned for the past summer, but what now? The ekranoplan lost its engine and if there are no changes, then I think further experiments with it will be suspended. What I wanted I managed to do and my conscience is clear, but there can be no talk of further project development without significant finances. Therefore, while everything is frozen and I move on to my other idea that I can implement with the means that I have. So, what’s next, and then remember, if anyone is following my work, I had a project with an airboat to which I attached a cockpit from a flying trike project and put the motor in front with a pulling propeller. Then I felt the idea was very good for aviation and as I like in the spirit of 1920-30 moves of the twentieth century. I comprehended that product of mine and decided to continue in that direction. That is, the boating and aviation theme. Aerolodka, but more graceful with beautiful old-school contours to make it pleasant to look at and ride. I scoured the entire Internet in search of ready-made free drawings of boats of that era so beloved by me. And what I found for myself. This is a 1941 boat called Dragonfly designed and built by Engineer William Jack. This is a seaplane 3 meters long with an oval nose and vintage contours in the back, it has two floats, apparently to facilitate getting to the glider, but taking the general concept of the boat, I altered the rear part by removing these floats and made a solid bottom because the boat will not have an outboard motor but my paramotor with a propeller and therefore had to be redesigned at the back and also in the front I will leave room for one more passenger seat so the nose will not be completely sewn up. I will make it a beautiful aluminum tail, paint the bottom and sides with either green or white paint and cover the deck with clear varnish to emphasize its wooden nature. I think I will get a beautiful boat, I really want to make it as soon as possible. At the moment I have already made all the frames and glued the keel and sides, now I am working on the upper part of the boat and I hope to paste over the deck next week and only then turn it over and take up the bottom. Work is going on soon all weekend I spend in the workshop, so I hope to finish all the rough work by the new year. In the meantime, the photos and drawings are below.

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The final test of the ekranoplan on the water in the 2020 season

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I’ll be brief. I finished with the ekranoplan. The water tests went well and now I have to return the motor to its owner, disassemble the boat and put it in a corner for the time being. This time everything was very fast. The weather was good, I quickly assembled the boat, sat at the helm and started off. With the Polini Thor 250, the boat immediately jumped into the water and glided along the surface. The front wing is always in the air at a speed of 35-40 km / h, the rear wing is also in the air and the boat is held by the water only with rubber strips that I screwed on before the last test. In general, at a speed of 50 km per hour, the boat flies very confidently, but at some point (I want to note that not always) the boat begins to sway and longitudinal instability arises. The first thought that came to my mind was that because the wings were too close to each other, it would be possible to lengthen the hull, or install a horizontal stabilizer to balance the boat in flight. I would also like to redo the motor mount again and reduce the motor angle by five degrees, plus raise it a little higher. Finally, you need to slightly reduce the angle of attack of the front wing by a few degrees. But this is all another time, I was exhausted during this season, there were so many alterations and visits. It is both physically and mentally difficult for one person to do more. Therefore, with a light heart, I postpone this project until modern times, what I wanted to do – lifted my boat into the air. Made my own small ekranoplan. Though not high, it flies. And it is also well managed. I didn’t make any extreme reversals so that some accident didn’t happen. Since the motor is not mine and I didn’t want to get a few thousand euros. Having made three high-speed races on the lake, I understood everything for myself and quickly disassembled the boat, washed off the lake until no one woke up in the vicinity. So now I am satisfied and can calmly engage in other projects that I am already doing in parallel. These will also be motor boats. One will be a two-seater motor boat which I am going to make according to the drawings of 1960 and the second one is a single-seat speedboat according to the drawings of 1941 which I am going to convert into an airboat with aviation styling. So what’s next is more. The video is as usual below.