This model has improved significantly
Anyone up for reviewing this work so far…?
As you can see in the stats the beams in the spec were waaay too skinny
This report gives you more detail on scaling…
TRPT_Ring_Scalability_Report.docx (870.3 KB)
You can play with it here
https://github.com/rodWindswept/KiteTurbineDynamics.jl
I do have concerns with some elements of the description
Just like the kites - most of this is - over my head
e.g. in the following paragraph from the report the phrase “is stretched by the twist geometry”??? bit wary of that … but I’d have to dig so far into the
maths
2.3 Tether Tension: Elastic Stretch Dominates
An important finding from the ODE simulation is that the tether tension at rated operation is T ≈ 2333 N per line, far exceeding the ~111 N predicted by a simple torque-balance model. The dominant mechanism is elastic stretch: each Dyneema tether (EA ≈ 707 kN) is stretched by the twist geometry, with chord length c = √((R·δ)² + L_seg²) > L_seg giving a tensile strain of ≈ 0.4% at rated. This elastic tension scales with rotor radius as T ∝ R² (since EA ∝ d² ∝ R² and R·δ / L_seg is constant when δ is fixed at the optimal twist angle).
it does twiddly round spinny stuff now though
That’s a bonus - makes it much prettier
OMG it’s fast - already addressed those and a few problems and revised and commit pushed to git.
And now done a stacking scalability sweep
TRPT_Stacked_Rotor_Analysis.docx (622.5 KB)