Curing Ultra-Light Satellites Without the Warp
If you’ve ever tried to bond a thin-wall satellite reflector, you know the nightmare. You’re dealing with these incredibly light composite structures, and the second things get too hot or uneven, the whole part warps. It’s frustrating. The trick is to stop trying to heat the air around the part. Instead, we use high-intensity shortwave IR lamps. They go straight for the resin chemistry. It’s a much cleaner way to get the job done. Getting the heat right To keep the part from shifting, you need a lamp with a really tight power density. We stick with shortwave IR because it punches through the surface fast. If you don’t, you get the “skin effect”—where the outside is hard and cured, but the core is still tacky. Not ideal. By playing with the wattage and the distance between the lamp and the reflector, you can keep the temperature difference across the part down to just a few degrees. The gear you actually need These lamps use high-purity quartz envelopes. They have to, because aerospace resins need some serious heat to set. One quick tip: stick to R7s or SK15 connectors. If the fit is loose, you’ll get arcing, and you’ll end up burning out your sockets. These usually drop right into standard industrial arrays, but double-check your power supply voltage. If it’s off, your filaments will pop way sooner than they should. The catch Here’s the thing: high-density IR is powerful, but it can be a bit too much. While it speeds up your cycle, that heat can start stressing your mounting fixtures. If your cooling system can’t keep up with the ambient heat rise, the tooling starts to soak up the temperature. To avoid that, I’d suggest a closed-loop PID controller with IR sensors. It lets you tweak the power in real-time. It keeps everything stable and ensures your reflector actually stays parabolic.