EDF Powered Seaplane? 

Got a suggestion or idea? 💡 Comment down here and let me know! 👌

England flying spots are epic!

The fan mounted above the CG will be creating a nose down pitch as you apply power, this won’t help the aircraft get up on the plane in the water so you’re battling with too much drag. Maybe try adjusting the angle of the fan or move its position to reduce the torque rotating around the CG. The hull is a flat bottom so lots of drag, a v-shape hull would reduce this. Keep up the great work.

Sweet! Maybe the hull needs a bit of a redesign? It's almost as if the water is "sucking" the plane down and preventing it from taking off

3:57 foreshadowing... Your sub video is ironically what brought me here lol. Now I stay for the awesome rockets and planes.

That landing was beautiful!

I do so love your enthusiasm and the efforts you make, you try very hard and the most important thing is that you do try, and keep trying!

Teggs Nose / Langley….. I believe that is actually a reservoir, there are underwater plughole that cause down pull there. Also provides drinking water to Macclesfield :)

Needs a v hull bottom with a step in it. The flat bottom sucks and sticks to the water. Shape the fuselage bottom like a float plane float and sponsons on the wing tips. 😎👍🏼

the ground effect after it landed on the water in slow motion was absolutely epic!!

May be old stuff but if you want to make a plane being able to take off from water, you need to reduce skin friction with the water skis. Normally that is done by reducing the camber line on the bottom so the water doesn’t stick to the surface until the trailing edge. So look for that ‘stepped’ profile for the skis.

Brilliant build. Consider putting a thrust cone on the end of the EDF engine for some added thrust. Try about 85% of the frontal diameter of the inlet to get a sort of pinching-the-garden-hose effect.

After an close analysis this plane has a possibly th best design out of all the planes you have made there is only one thing that makes this one stand out

And I must add that I very appreciate your videos and work, it's very noticeable the amount of effort you put into these finominal video, everything from the plans, planes, and the amazing photography work! Your videos are a lot of what inspired me to get in this hobby, and I guess it inspired many more alike! So thank you for your great work and amazing contact!

The rudder on the Hyperboat is blocked by the step. There will be very little control once it planes off. Check out a 3 point hydro or surface drive deep v, then see where the rudder is. Its far back and in the water. You can just extend it down where it is but if you get any speed out of it it will be real twitchy in that far forward a position. Good luck with your builds!

Another good video showing 'no fear' as usual in pursuit of the hobby. If you revisit sea planes take a look at how the Polaris deals with wing floats.

perfect landing

Wonderful! Suggest you look at the bow and keel shapes if you haven't already. And with one engine maybe you need a low profile rudder

The duct fan does not contribute to lift at lower speeds. That is why most seaplanes will have props in front of the wing to generate lift by the air blown over/under the wings without the plane actually being at that (air)-speed.

I like and enjoy your experimental approach,this is how we learn things,take any ordinary two float seaplane and fit an EDF pack either side of the fuselage,that should fly.

If you make the hull and floats like an inverted wing, it's going to make the plane want to suck itself into the water. That's what the step is for in the hull, to break the -ve lift and allow the aircraft to plane and then break away from the water.

It's because of the position of the propeller, it needs lift from the beginning, for that it need speed(initially) or just keep the propeller on the nose.

Possibly, the thrust mounted so far forward creates down pitch, so the bow plows instead of getting it up onto the step, which brings me to my second point, being add a step so you can hydroplane with less hydrodynamic resistance in the take off run.

Firstly, thumbs up for addressing the issue of potential water ingress (at least you tried where so many forget!). Assuming that the aircraft´s C of G was set up perfectly for flight, if the aircraft taxiied nose-down, then surely the hull shape requires more buoyancy towards the nose. I´ve seen "skimmer-type" floats working well on other RC aircraft, though I bet you´re right; you´d do better with true floats. I hesitate to make my last little point, but then again you´re affiliated (if loosely) with Flite Test, who are affiliated to STEM. At the risk of being considered pedantic, then, I shall mention the fact that this is a flying-boat rather than a seaplane. If the aircraft´s fitted with floats which hold the fuselage clear of the water (think Schneider Trophy), it´s a seaplane. I look forward to seeing this model (or a later iteration of it) rise off water; the landing we saw today was utterly beautiful and very gratifying to watch.

i think the problem is, you need to make the hull near the water step more straight (not very down angled as the wing will then have minus attack angle when trying to take off)

Love the location again beautiful lake and sky

she flies quite well once she's in the air....landing even works well... the problem is getting there (I know...obvious...) Here's a few observations I spotted: she's nose heavy.....floatplanes need to balance on their CG both in the air, AND on the water.... your fan needs some thrust angle to it...if it's forward of the CG, it needs to tilt up a few degrees....if it's aft of the CG, it needs to tilt down a few degrees.. (the specific amount you'd have to fiddle with) In both cases, you want it to lift the nose, not pitch it downward.... she's also sitting "too low" in the water....try adding a pair of small "rail floats" on each lower edge of the fuselage from foam; that should raise her up in the water...something like little torpedoes with like a quarter of them cut out down the length to fit the fuselage. .your "step" needs to be at or slightly forward of your CG for it to be effective (again, to lift it out of the water and not pitch the nose down) I wouldn't count on ductape for waterproofing. it's fine for shedding rain and splashes, but not for keeping water out if it's submerged; it's also "heavy" as tape goes Try clear packing tape...it's more waterproof (though no tape is long term), but should be good for short duration.....or you can try to seal with hot glue using Flitetest's method of "wiping" most of the bead off the joint with a scrap (the way they do for making control hinges)...that should seal nicely, but help minimize adding weight. another idea might be a couple coats of spray lacquer on the lower part of the fuselage, paying close attention to the seams. A third possible, use a good quality wood glue with an outdoor rating when you assemble, instead of hot glue. I would also suggest you give your electrics Peter Sripol's waterproofing treatment... hope some of those help!!

All seaplanes from the past had a wedge-shaped hull. Might you try something similar so that the plane puts less hull in the water as it goes faster and lifts out?

Hi james i really like your videos and follow them Tnx for your nice projects😍

Hello Mike, I love to see your experimental craft ,what about an aircraft that can land on water and submerge to avoid detection !

Great videos I enjoy the ups and the downs, you're a humble man.

Interesante y bonito proyecto. Creo que el secreto está en confeccionar una canoa, el rozamiento del agua, es muy superior al de el aire. Intenta suplementar con algo bajo el fuselaje y así mantener el morro elevado, Pa razón el take-off! Muchas gracias y animo!

Key is the hight of the step and its position, cause only that step decides about lift or swimming. And the real planes have a keel - for some reason like easier take off + straight flow and fly while getting airborne.

I would love to see an update of this plane and your improvements. Did you get it starting from water? Pretty interesting and unique modell. Hope it is still floating or flying and did not sink.

Nice job!!!

I love your channel, awesome videos! But my I make one suggestion that would makes your videos one step better? Get a hand held gimbal for your camera/phone that you film with. Makes your videos silky smooth. Banggood has some decent ones for cheap.

You should try connecting 3 planes together by the wing too and fly it

Pretty nice, dude. 😊 Take a look at the Sea Duck Flite Test made a few time ago. Maybe you can use those landing things?

Thank you, perhaps you can make an episode, where can people get the electronics from, including the remote, and how to connect them together, or how to connect the servo easily, because connecting servos takes time and they are heavy

Hey James, I really enjoy learning from your experiments! Keep it up man!

You needed to make the bottom of the plane look more like the hull of a boat, the "V" shape would have reduced the drag on the aircraft.

I know this is a little picky, but it's not a jet powered seaplane. It's electric. Your wingloading is too high for the available thrust. It also looks really draggy on the water. More power and/or less draggy tip floats, more wing area, flaps...lots of options. Also, EDFs are a pain in the neck. ;) It's a cool project though and in terms of flying, I can't criticize it. You do cool stuff. :)

Stepped hull would be good too,keep up the good work

well make a boat howl for the edf waterplane or put some FT seaduck designing into it! it will work

Have you seen a PBY? The Catalina is one of the greatest seaplane. Copy that profile.

You should try to make a submarine though

i really could have worked, if you look at the landing you can see that the step was working you just needed to get up on it. all you really need to do is redesign the floats so they are more hydrodynamic and adjust the thrust angle to help it climb out of the water and onto the step.

The stepped hull is good, but you might want to consider creating more of an angled underside so that the center-line is a peak that slopes down to the sides, resulting in less contact with the water once you start increasing throttle, like so: avstop.com/ac/flighttrainghandbook/imagefdc.jpg

What about using a hyrdofoil to lift the plane up in the water? Might be able to get more speed and less drag.

Have you thought about building a rc waterplane more like the polaris from Steve Shumate?

Awesome video 👍

Your horizontal stabilizer is dragging in the water. For one it's slowing the plane as it's trying to get proper speed for takeoff, and secondly you aren't getting any air passing underneath the elevator to pitch the plane up. You would also need enough room between the tail and the water to get the necessary pitch angle to climb up off the water. Cheers.

You should do a heavy lift drone or airplane.

Top quality!

Have you not see what a sea plane looks like? It's a boat with wings. Your hull is flat and square, so it rides too low in the water. that's why the wing skids didn't work. Redo with a proper hull and you'll get it.

I think you should change the position of the step...

Erm, that took me 10 seconds of the scenery to know exactly where you filmed this.

put half a liter water bottle under the wings and let the plane float on it over water. we did something like that and able to take of from water. but it was 10 years ago and i dont have any footage of it

Where can I get plans to make that airframe?

I'm inspired

I fly a lot of Seaplanes , You are experiencing the Plow Factor on the hull. Need a LOT of up elevator to get it onto the step , the ROW. rise off the Water. Fly a LAKE Amphibian LA-4-200 , 38' Wingspan FAA Aircraft, Need to have extreme up elevator and then onto the step. Well otherwise great attempt. Hydro/Aero/Dynamics .

Hola, de cuánto amper es el speedcontrol?

That was a textbook landing for seaplanes

what foamboard do you use

Maybe try and make a video of a water plane made with non waterproof foam board (not using flite test foam..) For the people who don't have access to these materials..

You should use waterproof cases for your battery😅

You should to more collabs

If there is one thing I’ve learned from making boats with Duck tape it is that duck tape is not waterproof

BOAT PLANE BOAT PLANE

enjoy your videos mate keep them coming :)

Or angle of incidence

if you put lifter flapes are an hydrafoil wing if ront of the sea plane it will help it lift up and then the wings will grab air

Where do you buy foam board in UK?

Nice video! What's this foam with paper layer called and where could I get it, please?

Got a nice preview on ft fans and also where do u get their foam board from?

There is no engine on that plane. That is a motor. Engines use gases and motors use electricity.

more like project water

try to make a submarine

I don’t know how you make your models work. Your sea plane had a flat bottom instead of a hull shape. When you took off the pontoons the motor torque put the starboard wing tip in the water. For a seaplane to take off it needs to get up to plane riding nose high. All your plane did was to plow through the water,

Yes 300th like. You could try make a plane made out of common materials around the house (except electronics) eg cardboard pencils lolly sticks Keep up the great work👍🏻👍🏻

I wonder if you turned the motor around and made it a pusher instead of a puller?

try researching what you want to build. Design requires mathmatics. Trust me if you have thought it up I can garentee somebody else has already tried it. As for you flying boat try looking at the Lake Renagade aircraft. I am sure you can find it on line , everything else is! As for your hyper boat they race hyper RC boats here in the states try looking that up as well

I just discovered your channel.👍🏼👍🏼

(shock)

The thrustline of the engine is above the water. So there exists a momentum around the. which pulls the nose in the water when power is increased. This increases drag, keeping the speed down and counters rotating for take off. 2 bad things. A simple solution will be to increase the angle of the thrustline of the engine so that it pulls a bit upwards (5 - 10 degrees). Make this angle adjustible to experiment. Increasing the Angle of Attack of the wing will also help. If the model flies ok as it did. , I would not experiment with the c.g. too much. 2 foam skids at the wing tips will be sufficient to stop the wingtips from touching the water. Apparantly the torque of the engine pushes 1 tip down..Check out the angle of thrust of this full size Grumann Goos when it is in the water. abc.action.news/watch?v=bwNI4hWAYoE

The step should be in front of the CG

James Bond Submarine plane

Plans/links?

I thoroughly enjoy your videos, However I'm not sure you have a proper understanding of the word "JET". Particularly ironic since the acronym EDF uses the same number of letters.

first

Electric jet engine model?

Hi....would it be possible to send me that building plane of the aircraft?

Lot of talking, short flight, more talking

it is amasinge

Duc Ductt tape is rubbish for waterproofing, use electrical tape next time :)

que des conneries !!!