Designing aircraft landing gear braking systems requires careful consideration of mechanical constraints, as initial solutions that appear sound may fail due to unaccounted forces; the creator demonstrates this through an iterative process where a hinge-based brake mechanism failed because it created unwanted outward pressure on the axle, leading to the development of a torsion bar solution that allows controlled movement while preventing problematic forces.
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Northcoates Nieuport Build Part 40 (**£$!^&** BRAKES!)Added:
Okay, folks. Um, different uh point of view today. We're in the club room of the uh North Cots Flying Club.
And here I've got this handsome gentleman sitting at the end of the room here. He's called >> [laughter] >> He's Paul, who is one of the subscribers to the YouTube channel, and he's also uh hopefully a very talented artist who is going to help me out with this uh the tail uh piece uh and all the the writing on the tail piece, which was basically gross weight, some fuel weights, and that sort of thing, and uh registration number. So, Paul, say hi. Hi. And uh what he's done >> [music] [music] >> And uh what he's done, as you can see on the table here, is he's created uh a template, and he's going to freehand uh the the uh relevant writing on the back.
Um Not quite freehand.
>> Okay. So, Paul Paul Paul explain.
Uh what I've done is is I've created a template, not a stencil, but a template.
So, this allows me to um draw out the writing um in a structured uh space, so everything's neat and tidy, so the top and bottom lines of each piece of the writing will be presented uh neatly.
And the way I've done it is um I've got a picture off the internet of a tail a Newport 11 uh rudder writing thing that I liked, and I traced round it with the rectangles, measured them uh as they appeared on the paper, got the measurement for the white bit on the rudder, scaled up accordingly, hence all these numbers.
And um and this is the writing that I'll be drawing in place, and once I'm happy with the drawing, then uh we tackle it with a paintbrush and the black paint and uh, flip it over and do it all over again to make it look uh, the same on both sides.
So, it should be reasonably close to how it was done originally.
Excellent stuff. Excellent stuff. Thanks Alan so much and we shall keep you informed with more video.
I just love airplanes and building stuff and being a pilot myself and all the rest of it. Of course. Of course. Yeah, it's something that's uh, you're living the dream. I was [laughter] that I'd love to.
So, being able to contribute a little bit.
>> Yeah, I say it's really appreciated and it really is. It's It's uh, Yeah, it's uh, I was just just to mention you really like the color scheme I've got. Yeah.
Yeah. Yeah. And And now it's on it even more so to be honest. You know, when I started putting the paints on I thought you'd you'd have sort of second thoughts, don't you? And quite Not quite sure, you know, have I Is it the right thing? Cuz cuz you're committed at that point, aren't you? That's the thing.
It's that It's that final commitment, if you like. Yeah. Yeah.
>> And to do a redo of something that Yeah.
Yeah. is like one pain. Yeah. Yeah. But now I'm I'm more than happy with it. I after as I said on the the channel, I've taken a few liberties with the the colors. I suppose if I'd have put the um the the roundels in the French style, the opposite way around, it would have been uh We've got to bear more accurate >> You've got to bear in mind it is a French fighter in a you know you're you're fighting from a French field.
Yeah. Yeah.
>> happens to be in English colors. There were some examples of old older British um uh fighters that had some bright colors, too.
>> Yes. Yeah. Yeah. That's uh Well, I mean they were a bit far few and far between, but you know, Sholto maybe was a bit of a rebel. Yeah. Yeah. That's exactly it.
That's that's certainly the my my hero French pilots like >> Yeah. Yeah. You do know you were in Don's there back in >> [laughter] >> Sholto Captain Sholto, didn't we? Yeah.
Yeah.
I'm more like the Meacon I like.
>> [laughter] >> Yeah.
>> Oh man.
Whatever you do, kids, don't get That's it.
That's it. It is.
I'm amazed at how light this is. Yes.
Yes. I mean, I mean, I don't think it even weighs a kilo, does it? I know.
Nothing like it, I don't think.
Which is why I was thinking is it is it going to end up tail heavy or nose heavy? Yeah, this this is my one of my worries.
Why do I say tail heavy or nose heavy, but now that I'm Whatever, anyway. I'm happy to be wrong.
It happens occasionally.
>> [laughter] >> So.
Looks good. That's right.
And it is that way, isn't it?
So, here we are at the start of another week, North Coast Newport build.
You may notice I've got a a hoodie on because without the windy house, it's got cold in here again.
Uh so, I'm going to have to get used to that again. I But, um So, start of another week, and I think we'll uh have a go at these brakes. I'll spin this around and show you what uh my thoughts are. This is very much a a proof of concept idea, I guess. May work, may not. We'll have to see. Um but, it's a sort of a two-part solution to the problem, I guess. But, I'll spin this around, show you what I've got in mind, and uh you can laugh at me all you want, basically.
So, here we go. This is the idea.
I've got a bolt that goes through there, that's part of the build. It's not very good lighting, I'm afraid, here. But, there's a bolt that goes through the axle there, which holds on the stub axle, which holds the wheel. So, that's already there. That's So, I thought I'd utilize what's there, and I've made some brackets, as you can see, there, to go either side of that bolt. Just put a longer bolt in.
Those will go there. They're not vertical at the minute. But, currently, they will go vertical.
And then there will be a hinge. Again, not that hinge. This is just a hinge I had lying about. But, probably a a heavy-duty hinge, like I've put on there, that will go to that.
Probably weld it would be the best get that, I guess. Weld them together. But, we'll see when I get the proper hinge on, see what But, I'd like that vertical there. Needs to be vertical. And then, the whole thing, if I can do this while filming, will move up and down as the axle moves.
So, that works good. That That's good.
The good thing about the hinge idea is it's got strengthening Sorry about the off-camera work.
Strengthening inside there cuz that's only aluminum. It's not very strong. So, I'll put a steel another piece of steel angle inside that bracket there, which that's bolted to.
This would be either welded or bolted, whichever works.
And that will also stop the uh the momentum when you put the brakes on. It's going to stop the axle twisting because it's all Sorry about this. It's all sealed up here. So, that stops the the uh the the rotation movement of the axle because of the the bolt going through it here and that that's locked up there.
So, that's that's the plan with that.
The problem I've got is left to right movement.
Um as in the the axle sliding that way.
That's the big problem with this one.
And I'll show you the solution to that in a second.
Okay, so the second part of the solution for this is some torsion bars.
So, the thought is piece of aluminum tubing.
I've got these bolts that go through here.
Extend those bolts and put that between the This is just a spreader bar basically, this piece. Just a spreader bar.
Put that on that bolt between them and then bolt it through the axle there, one on either side.
It's a bit awkward to film and show this, but that fits quite nicely in actual fact. It's the right gap. Now, obviously, if I put to it it will be on bolt through it with the that we're able to twist. So, with the up and down movement, they will just twist on the which will be less at this point, but they will twist on this bolt here and on the bolt that goes through the the axle, and they will just be able to rotate slightly like that. And that one either side, obviously, all the torsion the strength is going down the pipe down the tube.
So, because it's left and right movement I'm trying to stop.
So, hopefully, that is quite a neat and light solution to my problem.
This is theory.
Um whether it will work in real life, we don't know. And especially undercarriage has a hell of a lot of pressure on it.
Surprisingly more than you think, I guess.
Um but this is this is the the way I'm thinking at the minute. It's quite neat.
It's light.
And it's relatively simple.
But we'll see. I'll show you the other side with the band brake.
This has got the the band in place.
As you can see there. And the idea is when that's vertical, the bolt goes through through there, through here.
Holds it in place vertically.
And then we can get the the cable, which will pull the other side of that band tight.
So, that's that's the thinking. That's that's where I'm looking at.
Obviously, you can see the the this this is just a a trying to make it work and trying to get it set up. Um but I'm sort of quite liking that idea. It in my head, it looks all right.
We shall see. I'll keep you informed.
Okay, so there we go.
Say cheese. There we go.
Our glamorous model today is modeling the the new Newport >> [laughter] >> is modeling the Newport tail.
>> [laughter] >> So, it's coming on. It's coming on. It's looking good. Looking good. There we go.
Looking good. Looking good.
French French letters on the tail.
So, there she is.
All finished and painted, hand painted as the originals would have been.
That's the side pole might have pulled it. Unfortunately, he was only able to do one side.
Um which left the other side for me to do. So, brace yourselves and I'll flip it over.
And that's the other side.
One side I did, one side Paul did. So, it's it's worked out pretty good. Quite impressed with the the work. Really appreciate Paul coming down and taking time out of his uh busy schedule. He was visiting his mother for a birthday and was passing our area and called in.
I wouldn't have got the results I got from that without Paul's base work, of course. So, thanks once again, Paul. Really appreciate your help on that.
So, here we are again.
Back to square one.
My wonderful idea that I think I showed in earlier bit of this video um was an abject failure.
What I failed to take into account was if I had two two hinges which was there and there and a bar between them even though this moved it still moved in an arc.
And it's all right on one wheel, but if the arc's going the other way as well it's got nowhere to go. You just got pressure pushing outwards on each end of the the axle.
So, that was an abject failure. I did mock it up, tried it because I was determined determined that it was going to work.
But maybe if I'd been an engineering student or a musician I might have spotted that earlier.
But what I have thought is part of the process of mocking it up and making it work was putting this hinge in here.
And I suddenly thought if I had instead of a hinge a piece of angle with a bolt sticking up through it I don't know whether I have This is an idea I've possibly mentioned before, but it's certainly an idea I've got plans for.
But you've got a a a piece of angle, bolt sticking up through it and another piece of angle coming this way out like that with a slot in it then as that comes up and down the bolt will move forwards and backwards in the slot.
It'll prevent the movement that way.
And if we limit the limit the slot size it'll prevent the movement for for a f- that way. If you can see that moving.
So, it's sort of a an amalgamation of two ideas.
But I'm a bit disappointed that it didn't work.
But I needed to prove to myself that it didn't work, if that makes sense.
So, it has led to this idea.
And I'm going to give this idea a go now.
I'm determined this thing going to beat me.
Um it's really quite frustrating.
But, um I'm determined to come up with a workable solution.
So, I'll keep you informed.
Um the men with the mic white coats and the straitjacket maybe around before I finish this video series.
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