Feel free to discuss here anything related to topic that doesn’t have it’s own theme
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Thanks for creating this.
So we were talking about the new Su-57 engines… will they have 2D/3D nozzles? I’ve seen pics of 2D nozzles but never mounted.
That’s publicly unknown I believe
Wdym? Su-57 always had 2D vectoring nozle.
Su-32 better or worse than F-15E, and how much?(For game)
Maybe i’ve explained myself poorly… at the moment the engine nozzles of the Su-57 are “round”, i’ve seen online a new engine that has F-22 like nozzles but i’ve never seen them actually mounted on a Su-57 until now. Prolly isn’t 2D/3D nozzle but just a stealthier nozzle
Not this one in particular… it looked way more like the F-22 one.
And it wasn’t mounted, the pic that i remember showed the engine at an expo.
Probably the first picture
It’s stagnated since Soviet times, but there are new examples of aircraft tech produced in Russia. The IIR seeker of the Kh-38MTE for one, as the USSR had nothing like IIR tech for air to ground missiles. Thermal sighting systems in general are something Russia has made a lot of progress in compared to the USSR.
Stealth aircraft are another area where Russia is ahead of the USSR, as the closest the Soviets had to stealth was the Oka ballistic missile, and even that is a somewhat different type of technology.
That’s missile tech and not aircraft.
The SU-57 begun it’s design in soviet times. And as far as I have seen nothing really new has been developed around aircraft by Russia, they mostly look at what others have made and do the same.
Sort of a “you can copy my homework but change it so it’s not obvious” situation.
Edit:
Wtf. My post got flagged…
I really hope that people false flagging get some sort of punishment. That type of behaviour should not be encouraged…
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No.
Pls continue here
Idk how this isn’t embarrassing enough that he has to keep going like he wasn’t just outright wrong all the time.
According to Ziggy the Falcon 9 & R-77 grid fins are used in the same manner & SpaceX uses the RD-180 on their russian rockets. Oh, and they don’t re-enter the atmosphere or land.
Are you talking to me or yourself?
Yes they deflect to change attitude of the rocket. You did not see the video?
Yes, I am a 100% right. Space X used US government launches prior to building own engines. The US government uses the RD-180. That is a RUSSIAN rocket.
He added “they are hoping to move away from that.” Why would they hope to move away from that if they never used Russian Rockets from the start?
@Celestia @MiG_23M @_Fantom2451
As the video shows.
Grid fins are not used for airbrakes. That absurd. None of you have any idea how fast reentry is. 19,180 mph (30,870 km/h; 8,570 m/s) The Grid fins are uses for directional change (attitude) while the reentry boost is the ONLY thing that can slow the Rocket down.
I am 100% correct they work EXACTLY like the grid fins of the R-77 :)
Hope this information helps.
Demonstrating inability to comprehend basic text and failure to understand the method from which the grid “airbrakes”.
Lack of understanding is on full display.
I concur that they are not airbrakes amd their purpose is for directional control and flight stabilisation to allow a rocket to effectively fly backwards.
However, they can be used as airbrakes in the same way that the control surfaces split (similar to the rudder airbrake on the su57 and f22)
Any control surface can be used in this manner, but grid fins are a lot more efficient as a lifting component than a planar fin of the same surface area.
Their placement at the top of the booster is a key feature for stabilising a rocket that was flying forwards when leaving the atmosphere, but is now going backwards during re-entry
When the fins are deployed they have to produce enough drag to keep the rocket stable and pointed in the right direction, as without them the center of drag would be in the wrong place, and the rocket body would start cartwheeling through the atmosphere.
I reccomend playing Kerbal Space Program and watching Scott Manley and Matt Lowne if you are interested in learning more about the rocket and space industry.
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I appreciate this.
True.
But we are talking about reentry speeds. Slowing down is the boosters job.
how else is it going to control its attitude? the grid fins…
Why does everybody recommend I play another video game? Is this the education we are working with?
Look the only thing I was wrong about was that Grid fins are actually used for control at reentry as opposed to launch.
They work exactly the same as the R-77. @_Fantom2451 provided proof of that.
Just watch video. They deploy, the booster ignites, and the grid fins correct attitude all the way down.
Why do I need to play another video game to understand this?