Add property wind turbine concept and update project gallery

decisions/2026-09-24-v009-wind-turbine.md

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+# Version 009 — a wind turbine for the property
+
+24 September 2026. Marcus asked to add his own wind turbine to the property,
+the associated Git project and the public project page.
+
+## Design
+
+Added a conventional three-blade horizontal-axis turbine on a freestanding,
+tapered galvanised mast, with an ivory rotor/nacelle, tail vane, foundation cap
+and indicative lockable isolation cabinet. The illustrative location is
+(-36, 40) m, beyond the northwestern edge of the homestead. The hub is 18 m above local
+concept terrain and the rotor is 6 m in diameter. These are visual study
+dimensions, not a selected product, rated output or engineered design.
+
+Retain solar and energy storage. Keep the turbine out of the garden court,
+future pavilion footprints, food beds and basketball reserve. Its final
+position, tower height, foundations, access and electrical route must be
+reconsidered against the actual site. No setback or wind clearance is verified.
+
+## Deliverables and version boundaries
+
+- Public model: `blender/samford-solarpunk-wind-tour-v009.blend`, derived only
+  from the distributable v007 model. Prior binaries remain unchanged.
+- Private model: `/home/marcus/projects-private/samford-valley-home-v009/`
+  contains the turbine added to the licensed v008 Blender scene. Never copy
+  that binary into public Git or the web root.
+- Matching detailed and lightweight viewport geometry; the original 31 tour
+  chapters remain, with turbine chapter 32 added (2 min 40 sec total).
+- Updated concept plan, actual Blender overview render, website and context.
+- The Unreal projects and v007 film retain their previous contents. The turbine
+  has not yet been imported into Unreal or added to the film.
+
+## Before equipment selection
+
+Measure the wind resource at a representative proposed hub height and assess
+terrain, tree/building turbulence and seasonal variation. Then compare a
+supplier's independently supported power curve and expected annual energy
+against the household load and solar/storage plan. No output or payback is
+assumed in this revision.
+
+Obtain site-specific advice on council planning/building requirements, tower
+engineering and geotechnical conditions, noise and neighbours, vegetation and
+wildlife, maintenance access and electrical protection. The electrical designer
+must establish compatible turbine control, braking/dump-load arrangements where
+required, battery/inverter integration, isolation and earthing. If grid-connected,
+confirm the combined generation connection requirements with Energex.
+
+References checked 24 September 2026:
+- [Australian Government Your Home — renewable energy](https://www.yourhome.gov.au/energy/renewable-energy)
+- [Energex — solar connections and other technologies](https://www.energex.com.au/our-services/connections/residential-and-commercial-connections/solar-connections-and-other-technologies)
+
+The existing lack of survey, property boundary, site wind measurements and
+engineering remains explicit. The pending wall-integrated bed is unchanged.