The boat is assembled

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I put together all the details of the boat. Without a pilot, the boat weighs 125 kg, with me – 200 kg. Connected and started an engine. Engine jams, can not give full throttle. Engine fills. I tried to adjust the carburetor, but there are no changes, we need to look further. But the fact that the motor made it clear was enough to understand that the rear wing rises, and the front does not move. On the model there was also a rear wing always the first to come off, but there the power-to-weight ratio was huge, but here it is not enough. According to the plan, it should be so. When the boat accelerates and the front wing starts to take off from the stream of air tending under it, the rear wing will have to push it down, balance it. But still too sluggish the engine blows under the front wing. I digested the engine mount. I lowered the motor 10 cm lower. Now the tip of the propeller is 30 cm from the ground and from the water it will be about 20-25 cm. Started up again, again tormented with an engine that stalled all the time, but still managed to understand that the lifting force under the front wing not enough to pick it up on the spot. The fact is that my wing is made of PVC fabric and it is soft, which was made for weight. And it turns out like a pocket. So I’m thinking, either redo the wing and make it flat below so that the wing plane is closer to the surface of the water and thereby increase the pressure under it, or not get hot and wait for spring to do sea trials. Then I understand firstly how the boat behaves on the water, how the wings work, maybe everything will be fine at speed. And then, based on water tests, you can continue to improve the boat, or leave everything as it is. I do not know what to do. So much effort has been invested and now wait until spring to understand whether I was right or not. Okay, if someone reads this blog, someone who has experience in such matters and some comments would love to hear any constructive criticism. As usual below the photo and video report.

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Pasting and painting

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Christmas and New Year’s holidays came, everyone scattered home and the workroom remained at my disposal. Last week, the boat was glued with fiberglass for two layers. My colleague Tom helped me in this for a small fee, for what many thanks to him. And a week later, on the 24th and 25th, the boat was painted with dark green paint, my brother Vyacheslav helped me, thanks to him. I need to wait a couple of days until the paint finally hardens. In the hangar is plus eight  degrees centigrade, for the paint that I use (two-component polyurethane) this temperature is critical. But I hope everything will be fine. Thanks to global warming, the winter in our latitudes is getting milder and this winter is December 25, plus five on the street and does not seem any snow. These circumstances help me a lot, otherwise I would have to wait for spring, but I do not like to put aside what I had planned. Better I will do everything for the previously pack and put aside until spring and I can live and work quietly waiting for sea trials.

When everything dries well I’ll put together all the boat components. This is a very important occupation and I do not know how much it will take time. After all, I need to twist everything well, fit and adjust. Install the motor, guide the wires into the cab, install the tail and put the control handle. And most importantly, start the engine and check how it works in such a pulling mode and whether there is enough traction. This may take a couple of days or maybe a couple of weeks. In my workshop, I can only go about my business on the weekend, and then take it apart and take it away in the corners. But nothing, I will find the time. In the meantime, photos of the painting process below.

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Установил мотор

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Установил мотор. Точнее примерил новый мотор к лодке. Я строил лодку для имеющегося у меня рокета 120 аеро и моторама для этого мотора у меня уже имелась из моего старого проекта про Aerocar/ смотрите на ранние публикации. Так вот вся рама была сделана для одного мотора но я понимал, что мощности может не хватить.  Мои проблемы решил мой Друг и Учитель обучивший меня когда то летать на параплане Михаил за, что ему бесконечная благодарность надеюсь благодаря его вкладу в мой проект у меня появиться больше шансов успешно довести до испытаний мой проект с Экранопланом. Он предоставил мне мотор Korsair  с мощностью в 21 лошадиную силу и тягой в 65 кг что на 20 кг больше чем на моём предыдущем моторе. Я нуждался в тянущим пропеллере и заказал его у скайраннер. Не прошло и двух недель как пропеллер был у меня в руках. Недорого, быстро и качественно порадовал чехольчик для пропеллера , мелочь а приятно.

Вчера я переделал раму и примерил мотор он довольно далеко выдвигается вперёд  и кончик пропеллер возвышается над полом в 40 см на воде это будет где то 30 см учитывая возможное волнение получается довольно хороший запас над водой. Не хотелось бы чиркать пропеллером о воду. угол установки пропеллера визуально кажется довольно хорошим и часть воздушного потока будет попадать под переднее крыло. достаточно ли её будет это покажут лишь испытания. Правда можно немного изменить угол подставив шайбы под салинблоки и ещё я раздумываю о том чтобы  зашить нижнюю часть рамы алюминием таким образом получиться ещё одна плоскость по которой воздух устремиться под днище лодки. Все эти мелочи которые могут как и улучшить положение дел так и ухудшить. Поэтому я не могу их сейчас делать а смогу лишь на ходовых испытаниях. Думаю провести небольшое испытание в павильоне где работаю после того как оклею стеклотканью лодку. Соберу всё воедино установлю рули проведу всю электронику и тогда заведу двигатель в павильоне прогрею и дам полный газ тогда уже можно будет даже на стоящей на месте лодке понять некоторые моменты. а пока об этом нечего думать. На следующей неделе я договорился с коллегой и он поможет мне оклеить лодку стеклотканью. Если ничего не сорвётся то через неделю или две напишу как прошла оклейка. Как обычно фото отчёт ниже.

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Work on strengthening the structure

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I thought about the boat and realized that the attachment point of the front and rear is very fragile. I decided to strengthen it with aluminum tubes. I did it this weekend. The boat looks very good, it has a beautiful streamlined hull. Pontoons turned out very well and look organically with the body. One problem that I did not see initially seemed to be plywood as a material – the hull slightly bent at the junction of the front and rear of the boat. Due to the increased humidity in the hangar, plywood absorbed a lot of moisture and bent from improper storage of parts, but now when I connected the front and back, a slight bend appeared. I have a couple of ideas how to fix this, but all this after I have glued the hull of the boat with fiberglass. After pasting the hull, the boat will become tougher and it will be possible to fasten and straighten it normally, and after painting, moisture will no longer affect the hull. I also made a front little ruder and figured out the place where he would stand. It turned out pretty well. As always, the photo report is below. The quality of the photos is not very good, for which I apologize the protective glass broke on the phone and the photos turn out a little muddy.

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I managed till winter

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The front end of the ekranoplan is ready. The frame is welded, the pontoons are glued, everything is ready for gluing with fiberglass. I must say that the device is quite large. The main thing is not to sort out the weight, you need to keep within 150 kg without a pilot then it will be good. Honestly, I can’t imagine how I’ll take the boat to the test, although it can be divided into two parts, the roof of my small car is definitely not enough. And you will also need to find some secluded place to calmly conduct the test without unnecessary onlookers.

What else? I can only cover the boat with fiberglass in early December. a lot of work and the workshop is littered with various furniture so for a month I will not write anything here. If everything goes well, then before the new year the boat will be glued and possibly painted. Then the rudders, engine and cockpit will be installed. As always below the photos of the work done.

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The boat has already gained common features

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The next weekend flew very fast. I worked whole week and thought about this weekend will finally come and as soon as they come I take my project with excitement. The boat has already gained common features. I screwed the sidewalls connecting the front wing to the rear. Put out the wings at the right angle and welded from iron scraps that lay on the work frame for the motor. It turned out quite nice. I wanted to put a motor in order to understand how everything would look together and start it in order to check the operation of the engine with a pulling screw. But there wasn’t enough time for everything, because you still had to disassemble everything and put it in a corner so that tomorrow people will come to work so that nothing would stop them. Such a position annoys me very much and steals a lot of nervous strength, but on the other hand, I don’t give up everything because of some nonsense. I have to adapt, because I have ideas that need to be implemented. So it is with the material, that I can buy something I can take from scraps and residues. The boat will be experimental, you need to run it, try to drive it here, then everything will become clear about the design and materials. If there is a need to build a new boat and there will be funds for it then I will do everything differently, but for now I need to build a decent, strong, as easy as possible work thing, and I am completely concentrated on this. As usual, the photo report is below.

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