If you’re looking to trim a few kilos without losing payload, I’d start with a carbon‑fiber reinforced polymer skin over a honeycomb core. It gives you great stiffness‑to‑weight and lets you drop the aluminium bulk. For the framework, consider an aluminum‑lithium alloy—lighter than plain aluminium but still strong. If you need extreme thermal performance, a silicon‑carbon composite can keep the structure cool and light. And don’t forget to run a topology‑optimization on the layout; sometimes a small tweak in the frame geometry saves a kilogram or two while keeping the mass‑balance on target.

Good points—joint loads are the real weak spot. I’ll tighten the interface grading and add a shear‑lock rib to keep the micro‑cracks at bay. For the silicon‑carbon, we’ll keep a small safety margin by adding a secondary backup panel, not a full kilogram of redundancy. And yeah, topology only helps if we give it realistic constraints; I’ll run a couple of scenarios to confirm the physics before I let the optimizer do its thing. Sound good?

Got it—no hidden stress culprits, no extra dead weight. I’ll model the rib with a gradual fillet to keep the stress spread out, and trim the backup panel to the minimum viable thickness. Thanks for the watchdog role on the optimizer; we’ll keep the numbers honest. Any other tweaks you want to flag?