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
Sukhoi Su-27/30/33/35/37 Flanker series & Su-34 Fullback - History, Design, Performance & Dissection
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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.
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Are you not going to consider “optimized” is referring more to the design than just the size?
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?
The area of the grid depends on its size
S=ARmb
m-The number of plans in the grid
b-chord
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If you want to know about lattice wings, see the original source. I did not find the English version
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Working on this now. Both Su-27s. Correct no J-11s?
J11 is not needed, it uses the same engine
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Even the gridfins on the Soyuz was simply used as deployable stabilizers. They did not deflect they simply deployed as stabilizers. Not airbrakes.
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A grid of this shape was used as an aerodynamic brake
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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.
Maybe I am oblivious, I would like your insight.
Interesting so Soyuz Space Capule did. I only find literature stating Stabilizer.
The only mention of emergency air brake is a paper written by a guy in Pakistan in a sigle sentence.
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
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What does higher than usual drag mean to you?
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?
Beat me to it, might as well do the Chinese ones.
relative grid pitch
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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
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Mil 157 kg in 48 sec 3,27 kg/s
AB 363 kg in 30 sec 12,1 kg/s
It seems to be fine
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