You can see the maiden and subsequent tries in the playlist. It was scaled from a drawing of the full size I show that in part 1, but as you may know sometimes that doesn't always work. Something to do with the Reynolds's number. The model came out smaller than I expected and I made a few design errors in the placement of the EDF so it never had enough thrust. I coverted it to a pusher prop and I did get it to fly but not for long, last video in the playlist shows that. Then after that I broke it. She's repairable and I think with the CG moved forward a bit i might try again. Yes the wing area does look small and maybe I might build another wing and enlarge it a bit. Thanks for watching 👍
Hi, Darren yes you are right it was too far forward. If you watch the later videos when I tried to fly it you'll see it just didn't work. I think 20 secs was its total flight time, even swapped out the fan for a pusher prop. I had some design issues and didn't do enough research. It's been scrapped now but I plan to build another this year a bit bigger. I did find a great video on fan and position and jet tube size after I built it. I plan to make the fuselage slightly different and 3d print the jet intake ducts which will make the fuselage a lot easier to make. I was quite pleased with the final finish of the plane and learnt a lot. Thanks for watching and see the later ones if you want a laugh. Keith
@@rckeith Ahh sorry to hear it failed but I guess that's all part of scratch building, I've chucked out a fair lot of concepts myself believe me. A good general rule for most light single-engine jets is to locate the fan unit 1/3rd from the tail, which usually gives you the cushion to use a variety of battery packs up front and the typical tandem arrangement of most light jets means you have room to position the pack as needed for balance. In all the single-engine jets I've done the 1/3rd rule has been true, Hawk, Impala, Strikemaster, Pampa, even the F104. As I said before, loving your work! I am now looking into your aerotetris technique of hotwire cutting the sections according to profiles, I wold love to see more about this process
Very nice project. I will say though at 07:08 you talk of building the tail straight and I tend to disagree. The real aircraft was designed and built with anhedral on it's all moving tail to give the aircraft directional stability under high positive G manoeuvring to sort of channel it on invisible rails... If you are to build this model with a straight all moving tail assembly you'll likely find that it'll want to squirrel left and right under high positive G loading...
Hi Julian, I did have a Nitro BAE Hawk with a straight tail built from Tony Nijhuis kit th-cam.com/video/my_BPUEB_8g/w-d-xo.html and it flew great. But thanks for the warning I'll be mindful of that on the maiden
Wing surface area does seem rather small relative to the fuselage. How is it to fly? Your Nitro BAE Hawk seems a more conventional proportion for RC modeling. Many thanks for the great videos with lots of good information and detail in each.
There is no plan. Just an image, DevFus foam and DevWing foam software are used to create the gcode for the foam cutter. Part 1 of the video series explains how it's made.
Looks really nice. Like seeing all your methods.
Thanks Todd. Hopefully it flies well.
You can see the maiden and subsequent tries in the playlist. It was scaled from a drawing of the full size I show that in part 1, but as you may know sometimes that doesn't always work. Something to do with the Reynolds's number. The model came out smaller than I expected and I made a few design errors in the placement of the EDF so it never had enough thrust. I coverted it to a pusher prop and I did get it to fly but not for long, last video in the playlist shows that. Then after that I broke it. She's repairable and I think with the CG moved forward a bit i might try again. Yes the wing area does look small and maybe I might build another wing and enlarge it a bit. Thanks for watching 👍
I am familiar with your work and I know that you know what you're doing but I was quite surprised to see the fan so far forward?
Hi, Darren yes you are right it was too far forward. If you watch the later videos when I tried to fly it you'll see it just didn't work. I think 20 secs was its total flight time, even swapped out the fan for a pusher prop. I had some design issues and didn't do enough research. It's been scrapped now but I plan to build another this year a bit bigger. I did find a great video on fan and position and jet tube size after I built it. I plan to make the fuselage slightly different and 3d print the jet intake ducts which will make the fuselage a lot easier to make. I was quite pleased with the final finish of the plane and learnt a lot.
Thanks for watching and see the later ones if you want a laugh.
Keith
@@rckeith Ahh sorry to hear it failed but I guess that's all part of scratch building, I've chucked out a fair lot of concepts myself believe me. A good general rule for most light single-engine jets is to locate the fan unit 1/3rd from the tail, which usually gives you the cushion to use a variety of battery packs up front and the typical tandem arrangement of most light jets means you have room to position the pack as needed for balance. In all the single-engine jets I've done the 1/3rd rule has been true, Hawk, Impala, Strikemaster, Pampa, even the F104. As I said before, loving your work! I am now looking into your aerotetris technique of hotwire cutting the sections according to profiles, I wold love to see more about this process
What glue do you use to glue the fuselage sections together?
I use 5 minute expoy a very small amount.
Very nice project. I will say though at 07:08 you talk of building the tail straight and I tend to disagree. The real aircraft was designed and built with anhedral on it's all moving tail to give the aircraft directional stability under high positive G manoeuvring to sort of channel it on invisible rails... If you are to build this model with a straight all moving tail assembly you'll likely find that it'll want to squirrel left and right under high positive G loading...
Hi Julian, I did have a Nitro BAE Hawk with a straight tail built from Tony Nijhuis kit th-cam.com/video/my_BPUEB_8g/w-d-xo.html and it flew great. But thanks for the warning I'll be mindful of that on the maiden
Wing surface area does seem rather small relative to the fuselage. How is it to fly? Your Nitro BAE Hawk seems a more conventional proportion for RC modeling. Many thanks for the great videos with lots of good information and detail in each.
very nice can y send me plan of this airplane please
There is no plan. Just an image, DevFus foam and DevWing foam software are used to create the gcode for the foam cutter. Part 1 of the video series explains how it's made.