Grid fins on the Falcon 9 are optimized as air brakes to slow the rocket down and have considerably high drag in comparison to grid fins used on the R-77.
To say that anything using grid fins copied Russia is goofy because it’s like saying every single rocket propelled anything is Swedish in origin since that was where the convergent-divergent nozzle was invented. No one goes around claiming every modern rocket with such a nozzle is Swedish-originated.
you need to measure the fuel consumption parameters via localhost or WRTI
At the airfield, head into the house and first measure with mil mode, then with AB. The same should be done at an altitude of 11 km. When the plane runs into resistance
I mean. that’s a bit derived… but in of itself correct sure.
The amount of drag is proportional to frontal area, but shape also plays a significant role.
Depending only on the shape of the objects (i.e with the same frontal area) you can get a coefficient of drag difference of like 10x or more between two different objects.
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?
