First of all, aerodynamic forces on a structure are not exactly what we’re talking about, given that tests for aeroelasticity in F1 are free from aerodynamic forces. That aside, wouldn't you agree that the times a space-traveling object is subjected to aerodynamic forces are the most critical? So while the objectives might differ a great deal between a F1 team and Rockets Inc, they both wrestle with the same problem: How will this object behave when exposed to aerodynamic forces, how will its behavior affect other objects and, at the end, how do we figure out the sum of it all. Remember that controlled flex can be used as stabilizer also in the air.
Disclaimer: I'm not a rocket scientist, but my son is, so I've some insight in what their struggles are.
Anyway, we are drifting away from the center of this topic: Should FIA open up that part of the regulations?
We are specifically talking about aerodynamically induced forces. The test loads are applied mechanically for simplicity as bringing a full scale wind tunnel round the word for scruitineering is impractical. This is exactly what the autosport article and Tombazis specifically is getting at. To test the way the wings load up under aerodynamic loads the FIA s forced to come up with mechanical tests that do their best to simulate the aerodynamic loads.
From a safety perspective this isn’t a problem, because you can mechanically apply loads that very much exceed what the wing is capable of generating itself, and that can test for failure. The difficulty is chasing the various competitive advantages that the flexible wing rules attempt to nullify. Allowing wing flex within the budget cap would benefit the sport, I think.
To wrap up the spacecraft related tangent. Not all spacecraft experience aerodynamic forces. Some do during launch and recovery. Some are launched within an aerodynamic fairing and spend their entire lives in the vacuum of space, having never experienced airflow over their surfaces. Hope that clears up that little misunderstanding between you and Stephane.
PS. I am specifically an aerospace engineer with a specialisation in aerodynamics and propulsion. I currently work in the helicopter industry.