Future Idea Comments

assets/js/physics.js

@@ -292,6 +292,41 @@ export function calcVehicleInteriorTemp(Ta, globalRad, solElev, vehicleType = 'c
   return Math.max(Ta, Math.min(Ti, 90));
 }
 
+// ── FUTURE FEATURE v2: Pets Profile — Fur Temperature & Heat Stress ──────────
+// Dogs and cats experience heat very differently from humans:
+//
+//   FUR SURFACE TEMPERATURE
+//     Dark/thick fur absorbs solar radiation and can run significantly hotter
+//     than air temperature — similar in principle to calcConcreteTemp() but
+//     with fur-specific albedo values:
+//       Black fur:   albedo ~0.05  (almost all radiation absorbed)
+//       Brown fur:   albedo ~0.15
+//       Golden fur:  albedo ~0.25
+//       White fur:   albedo ~0.40
+//     Add a calcFurSurfaceTemp(Ta, globalRad, windSpeed, furAlbedo) function
+//     mirroring calcConcreteTemp but with appropriate convective coefficients
+//     for fur (lower hc than concrete — fur insulates).
+//
+//   PAW BURN RISK
+//     Paw pads are highly sensitive to surface temperature. Use calcConcreteTemp()
+//     output directly — the existing concrete surface temp is already the right
+//     number. Threshold guidance:
+//       < 40 °C  — safe
+//       40–52 °C — discomfort / possible burn (hold-your-hand-for-7-seconds test)
+//       > 52 °C  — burns within 60 seconds
+//     Display as a simple traffic-light column in the Pets profile.
+//
+//   BREED-SPECIFIC HEAT STRESS
+//     Brachycephalic breeds (Bulldogs, Pugs, French Bulldogs, Persians) have
+//     severely impaired thermoregulation — their safe UTCI ceiling is much lower.
+//     A breed selector (Normal / Brachycephalic / Senior) applies a risk multiplier
+//     to the UTCI thresholds, similar to the planned activity modifier.
+//
+//   SUGGESTED COLUMNS FOR PETS PROFILE
+//     Hour | Air Temp | UTCI+P | Fur Surface Temp | Paw Burn Risk | Shade Advised
+//
+// ─────────────────────────────────────────────────────────────────────────────
+
 // ── FUTURE FEATURE: Vehicle-at-speed thermal model ────────────────────────────
 // Idea: extend calcVehicleInteriorTemp (or add a companion function) to model
 // cabin temperature for a vehicle travelling at speed, not just parked.
@@ -314,6 +349,23 @@ export function calcVehicleInteriorTemp(Ta, globalRad, solElev, vehicleType = 'c
 //
 // This would be a useful companion output column (e.g. "Vehicle (moving)")
 // for road-trip planning, dog-in-car safety at a rest stop vs. motorway, etc.
+//
+// ── CYCLIST AT SPEED (companion to the above) ────────────────────────────────
+// A cyclist generates their own headwind, so the felt temperature (UTCI) is
+// very different from a stationary person — even without ambient wind.
+// Could share the same speed-class approach as the vehicle model:
+//   Slow (10 mph) / Moderate (15 mph) / Fast (25 mph)
+//
+// Key differences from the vehicle model:
+//   • The cyclist IS the exposed person — use the UTCI polynomial directly
+//     with va = max(ambientWind, cyclingSpeed * conversionFactor)
+//   • No cabin heating effect — the cyclist gets wind chill, not solar entrapment
+//   • High metabolic heat generation raises core temp (links to the activity
+//     modifier planned in compute.js — cycling at speed is a combined effect)
+//   • UVA/UVB exposure is unchanged — still fully exposed to the sun
+//
+// Could be a sub-option within the existing Cycling activity variant rather
+// than a separate column — e.g. a speed picker in the variant controls.
 // ─────────────────────────────────────────────────────────────────────────────
 
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