Spars shown in the video from 2:18 to 3:00 minute mark. Mechanism for the slats goes through the front spar.Impressed with the design, but can't see where this Rib sits in the wing, as I can't see any accommodation for the Spar, also part of the mechanism protrudes through the upper skin. I guess the proof is in the testing.
CF and metallic structures don't mix well. With the fuel and all that monkey motion for slats/flaps.Once you have the CNC capability, which he clearly has, to make those ribs isn't that much of a deal. Not cheap, but not nearly as expensive as you might imagine. The aluminium swarf all goes in the recycling bin so not such a big deal either. It's also worth a bit so will get recycled.
Aluminium is more that twice the weight and not nearly as stiff though. With some imagination you could integrate some of the mechanical elements from aluminium inside a moulded CF rib.
Precisely.for spot landing and 150 kts I'd go helicopter