March 30, 2025
Description
After the initial version has been out for some time now. It's time for some improvements,
thanks to some feedback from the community
mirrored from FPV-Wing-Racer (rev.2) by Whitespace - Thingiverse
| Some technical details: | Value | Unit |
| span width | 360 | mm |
| weight | 80* | g |
| top speed | ~ 70** | km/h |
| climbing speed | ~ 6** | m/s |
| glide ration | 1.5:1** | - |
| thrust to weight ration | >1 | - |
| printing time | ~ 4 | h |
| building time | ~ 30 | min |
| print material | PLA+PETG | - |
*with 300mah batt; **just an estimation
If you are further interested in this project or need building support, do not hesitate to contact me directly or write me on Instagram (@phil.white98) or Discord (astro_phil) or join the discussion on reddit.
Designed in Blender https://www.blender.org/
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These settings are essential for the wings, elevons and winglets.
Also try to over extrude the initial layer so that it will have a strong cohesion and I also recommend printing the first layer at ~25mm/s
Parts with the ending R must be printed twice but the second one is mirrored
Only the base part needs support. Support on print bed only is sufficient.
| Item | Value | Unit |
|---|---|---|
| Layer height | 0.15 | mm |
| Initial Layer height | 0.15 | mm |
| Wall line Count | 3 | - |
| Horizontal Expansion (CURA) | -0.05 | mm |
| XY-Size Compensation (Prusa) | -0.05 | mm |
| Elefantfoot Compensation (Prusa) | 0.00 | mm |
| Top/Bottom Pattern | Line | - |
| Line Direction | [61,151] | deg |
| Infill Density | 20 | % |
| Infill Pattern | Line | - |
| Connect Infill lines | True | - |
| Infill line Direction | 90 | deg |
Use Top/Bottom Line direction [-61,-151] for the **left wing** and [0,90] or [90,0] for everything else!
And print the Wings out of PETG if possible. It's more durable.
The elevons are only for replacement the wing already has one attached.
In case of scaling issues
The dimension (X)x(Y)x(Z) of the parts in [mm] :
+ Base : 70x84.1x15.1
+ Wing : 207x178x10.3
+ Winglet : 1.8x89.5x48.3
+ Elevon : 165x21.1x10.3
+ Rod : 9.1x52.5x1.5
If you want to use another camera and motor, please use the Custom File.
Warning: Do not exceed 95g of TOW
Disclaimer: I'm not connected or responsible for the content of the given links. Nor did i receive any sort of sponsorship.!!!
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Sometimes, a starting point is all you need. That's exactly what this first try was. I had no idea about what is important if you design a delta wing, so I startet with something that looked like it could fly, ... not very surprisingly ... it didn't! But Nothing to give up here. Lessons learned. Let's try a different approach.
Switching from a flat profile to an airfoil felt like a move in the right direction. It did not fly yet, but that could be explained by the CG being too far to the front. After fixing that, it "flew" for the first time. Well, it somewhat flew, but it was still very unstable in its flight characteristics. Hard to control and even harder to land.
If you have a look at the Video, you can see how the main fuselage has been moved further towards the rear.
To see it fly for the first time was the motivation boost I needed. Now I could start to try different ideas to optimize the flight characteristics. First of all, I increased the wingspan to the maximum size that fitted on my printer. Furthermore, I noticed with the positioning of the upper airfoil locking holes (whatever to call them) I was able to tune the wing twist in the correct direction. This feature helped to delay the stall behavior of the overall wing and lead to more stable and sharper turn with lower speed. In addition, I noticed that printing on a non-textured print bed gives a way smoother wing surface - which is nice.
Now after the first public version was out for some time now, I got some feedback from the awesome community <3. One of the most mentioned problems was that the click-in system was a pain to click-in and easily breaks in crashes and then you must move all the electronics to a new base part. That's why I introduced the screw-in system, which now should be easier to repair.
Yeah. The Canopy ... I tried to find a design which follows the lightweight 1-Layer idea, but nothing has worked so far. Most of the iterations totally screwed the flight dynamics and stalling was again a big issue. Maybe I will find a suitable solution for this problem in the future. maybe ...
License:
BY-NC-SA
whitespace
