Stephen Jones Posted November 6, 2022 Share Posted November 6, 2022 (edited) Swift Glider A design and build project I have started. So here is the design in CAD Which is a little too big for my building table so I have decided to have ago at making the wings in separate parts that I can put together on the hill. This will be a 1st for me as I have only ever made a one piece wing before as the wing joiner I am using Aluminum tube and steel rod already not sure that was the right move as I am struggling to get a smooth fit without sanding the steel rod. Steve Edited November 6, 2022 by Stephen Jones no pictures 2 Quote Link to comment Share on other sites More sharing options...
Stephen Jones Posted November 6, 2022 Author Share Posted November 6, 2022 So here is where I am up to so far, I have the webbing, Aileron and wing tip to complete for the LHS wing. Steve 1 Quote Link to comment Share on other sites More sharing options...
Stephen Jones Posted November 6, 2022 Author Share Posted November 6, 2022 Center section, I also have the webbing and Trailing edge plus skinning to do on the center section. Steve Quote Link to comment Share on other sites More sharing options...
Stephen Jones Posted November 6, 2022 Author Share Posted November 6, 2022 Ribs printed out and stuck onto the sheet Balsa. Cut out and ready to make a start on the RHS of the wing. Steve. Quote Link to comment Share on other sites More sharing options...
John T Posted November 7, 2022 Share Posted November 7, 2022 Looks like an interesting project Steve. Just out of interest, what CAD package are you using? Quote Link to comment Share on other sites More sharing options...
MattyB Posted November 7, 2022 Share Posted November 7, 2022 What wing section are you using? The design looks a bit Halfpipe-ish, though i's obviously not EPP... https://www.northcountyflyingmachines.com/product/halfpipe/ Quote Link to comment Share on other sites More sharing options...
Stephen Jones Posted November 7, 2022 Author Share Posted November 7, 2022 57 minutes ago, MattyB said: What wing section are you using? The design looks a bit Halfpipe-ish, though i's obviously not EPP... https://www.northcountyflyingmachines.com/product/halfpipe/ That is interesting MattB . I was wondering what to do about the Fin now I have an idea Thank you. Steve 👍 Quote Link to comment Share on other sites More sharing options...
Stephen Jones Posted November 7, 2022 Author Share Posted November 7, 2022 6 hours ago, John T said: Looks like an interesting project Steve. Just out of interest, what CAD package are you using? It is Turbo Deluxe 21. I have all the turbo deluxe versions from 14 to 21 as they where on sale at Maplin so every time their was a updated version I got it as it only cost £9.99 a bargain foe the diy enthusiast like me. But they have stopped doing the deluxe versions. Steve Quote Link to comment Share on other sites More sharing options...
Stephen Jones Posted November 7, 2022 Author Share Posted November 7, 2022 Hi MattyB, The aerofoil is one I modified over the years last used on my Guppy which has great high and low speed characteristics. It is Symmetrical and I got it along with a load of other as a free pull out in a magazine but unsure which one as the page only gives page number and date. Steve Quote Link to comment Share on other sites More sharing options...
MattyB Posted November 9, 2022 Share Posted November 9, 2022 (edited) On 07/11/2022 at 17:43, Stephen Jones said: Hi MattyB, The aerofoil is one I modified over the years last used on my Guppy which has great high and low speed characteristics. It is Symmetrical and I got it along with a load of other as a free pull out in a magazine but unsure which one as the page only gives page number and date. Ok, but looking back at that thread it seems your Guppy has a tail: Whilst I’m sure your model will fly, without a specialist plank flying wing aerofoil (its sweep is low enough that it can be considered a plank rather than a chevron wing) it won’t be able to match the performance of wings with something like PW51 or PW98. This is because plank aerofoils are completely different in design to those optimised for use with a tail, meaning you will have to carry far more reflex on your section to make it fly. Unfortunately this will add drag and hurt your performance in the turns. https://www.aerodesign.de/profile/data/pw-airfoils_attachment.pdf Edited November 9, 2022 by MattyB Quote Link to comment Share on other sites More sharing options...
Stephen Jones Posted November 9, 2022 Author Share Posted November 9, 2022 Thanks, Matt You are a great source of information. However this model is not what it seems and all will come apparent as the build and design progress. 😉 Steve Quote Link to comment Share on other sites More sharing options...
MattyB Posted November 9, 2022 Share Posted November 9, 2022 Ah, I see - it must be going to sprout a tail then?! 😉 Quote Link to comment Share on other sites More sharing options...
Stephen Jones Posted May 17, 2023 Author Share Posted May 17, 2023 I have done some more work on the wings now that the weather is warmer in my loft/ workshop. I am un decided at the moment weather to make the servo covers out of 1/16th ply and screw all the way through to hold both the servo and hatch in position. 🤔 Steve. 2 Quote Link to comment Share on other sites More sharing options...
Stephen Jones Posted May 21, 2023 Author Share Posted May 21, 2023 A bit more work done on this one. I decided to go for ply servo covers. Which fit very nice . Steve. 2 Quote Link to comment Share on other sites More sharing options...
MattyB Posted May 22, 2023 Share Posted May 22, 2023 (edited) Very nice construction, but I still can't see anything in the design that will help to address your unconventional choice of aerofoil. For your next plank I'd suggest one of the Peter Wick foils, which are incredibly well proven for speedy slope wings. Edited May 22, 2023 by MattyB Quote Link to comment Share on other sites More sharing options...
Stephen Jones Posted June 24, 2023 Author Share Posted June 24, 2023 Phase one nearly complete. A little too big to get a nice photo on my Building board. Steve. 1 Quote Link to comment Share on other sites More sharing options...
Stephen Jones Posted June 24, 2023 Author Share Posted June 24, 2023 Finished Phase one. Ready for its 1st flight. Steve. Quote Link to comment Share on other sites More sharing options...
Phil Green Posted June 24, 2023 Share Posted June 24, 2023 Looks brilliant Steve 🙂 1 Quote Link to comment Share on other sites More sharing options...
Stephen Jones Posted June 24, 2023 Author Share Posted June 24, 2023 32 minutes ago, Phil Green said: Looks brilliant Steve 🙂 Thank You 👍 Quote Link to comment Share on other sites More sharing options...
Ace Posted June 25, 2023 Share Posted June 25, 2023 Looking good SJ, 🤞 for the maiden flight . Quote Link to comment Share on other sites More sharing options...
Stephen Jones Posted June 25, 2023 Author Share Posted June 25, 2023 7 hours ago, Ace said: Looking good SJ, 🤞 for the maiden flight . Thank you. 👍 Quote Link to comment Share on other sites More sharing options...
Stephen Jones Posted June 25, 2023 Author Share Posted June 25, 2023 Forgot to add some pictures. As the wings are removable I came up with this idea to lock them into position and be able to remove them again with out fear of them coming lose mid flight. So I fitted a Pinned hinge and removed the pin. Here you can see the two half's of the hinge fitted into the wing half's. Simply slide the wing together. And if you have fitted them correctly they will marrie up every time. Insert a pin of the right length for a secure slop free locking system. Steve. 1 Quote Link to comment Share on other sites More sharing options...
Stephen Jones Posted June 25, 2023 Author Share Posted June 25, 2023 Took this one to the Slope Today. Now, ether my calculations where spot on or I was dead lucky as I did not have to alter anything. No Trim, No alteration to the CoG. It just flew 1st time without a hitch. I am well pleased with it, This is only Phase one of the model design more to follow. And I will post a video of it as soon as I have edited it. Steve. 😁 4 Quote Link to comment Share on other sites More sharing options...
MattyB Posted June 25, 2023 Share Posted June 25, 2023 Is the horizontal tail fixed, with pitch control via elevons? Quote Link to comment Share on other sites More sharing options...
Stephen Jones Posted June 25, 2023 Author Share Posted June 25, 2023 3 minutes ago, MattyB said: Is the horizontal tail fixed, with pitch control via elevons? Correct 👍 Steve. Quote Link to comment Share on other sites More sharing options...
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