Are you not going to consider there is no source stating that Grid Fins are used as airbrakes ever & there is no source stating it by DESIGN?
Optimized: make the best or most effective use of (a situation, opportunity, or resource).
He said, “optimized as airbrakes”. Grid Fins are not air brakes BY DESIGN.
Find one source that states Grid Fins are used as air brakes in rockets, I will be here all week.
If I say the Su-27 is optimized as a stealth bomber, is that statement any less absurd because I put the word optimized in it?
A summary is fine. As far as I understand, lattice wings are used best for subsonic and supersonic flight envelopes with poor performance at transonic speeds. While I’m not oblivious it would make for a poor airbrake and its purpose is flight control, does Space X’s specific design of the lattice wings contribute to higher than usual drag on reentry compared to a standard design? I notice they are more curved.
The Drag of the grating depends very much on the relative thickness of the grating profile. The number of plans, i.e. cells and shapes. They can be used both to improve handling at high M numbers and for braking. It depends on which grid you install
Look at the mass of the Falcon 9. Of course, they need to be larger than the R-77s…
Larger size equal more drag. The Weight & mass of the Falcon 9 would necessitate & larger control surface (Grid Fin). They are optimal for control surfaces at supersonic & hypersonic speeds.
This all comes down to what is your definition of higher than usual drag?
The process of stabilizing would happen through the grid fins inducing a very large amount of drag thereby ensuring the aft section of the stack will always point 180 degrees away from the velocity vector. It’s the same principle as seen in ejector seats that deploy a tiny parachute to stabilize the glide until the main parachute deploys
I believe the increase in fuel I noticed during live matches is rooted in the increased defensive flying. However, I do not feel any increase in performance carrying R-77s as opposed to R-27ERs.
“One after the other” means that STT is carried out on two targets in turn to guide the missile into the terminal semi-active radar guidance stage.
It undoubtedly shows the process of the Su-27 using the N001 (N001V) radar, using semi-active radar guided missiles to attack two targets simultaneously through the TWS + datalink remote control method.
i’m saying that object of the same size/area can have drastically different drag depending on the “front” facing shape.
(and to add to that; the “roughness” of the “sides” and “back” of the object also matters, like a golf ball and a sphere of the same size/area)
Like this:
Edit:
that is why the “front” of the grid isn’t flat but rather has “peaks” like these:
