Sukhoi Su-27/30/33/35/37 Flanker series & Su-34 Fullback - History, Design, Performance & Dissection

[ZVO_12_INCH]

14-16 pieces(P-77-1/ R-74M/R-74M2)…

Spoiler

https://m.vk.com/wall-140312885_307109

[MiG_23M]

So around 12x R-77-1 and 2x R-74M2? Possibly more.

[BBCRF]

The scheme from Arma 3, nothing to do with the IRL

[ID_Heaven]

RD-180 and Merlin are completely different engines.
RD-180 is closed cycle double chamber engine.
Merlin is open cycle single chamber engine.

[Ziggy1989]

They are different engines.

Where was it stated that they are one of the same?

[ID_Heaven]

@Ziggy1989

Where was it stated that they are one of the same?

SpaceX uses RD-180 on Falcon 9

[Joe_Rogan]

Any day now Ziggy

[ZVO_12_INCH]

It does not contradict other data!
http://otvaga2004.mybb.ru/viewtopic.php?id=1998&p=29#p1365056

[Prophet1313]

@Ziggy1989

grid fins are air brakes

Wait is that what you’re arguing??

Jesus christ stop making me agree with Mig_23M. The Grid fins ABSOLUTLY act as airbrakes. Really, anything that generates lift (in this case the force needed to manipulate the booster) necessarily generates drag and it’s a proportional relationship. If it generates a force on the booster through aerodynamic effects it MUST also generate drag.

@Ziggy1989

Yes, Space X uses Russian RD-180 engines on its Falcon 9 rocket.

They absolutely don’t. The Merlin engine used on the Falcon 9 is entirely homegrown. What you’re thinking of is the Atlas 5. That one did use the RD-180 and that’s why it’s now retired, replaced by Vulcan using BE-4s

[Ziggy1989]

lol sorry, about that Prophet. I would never intentionally.

As for the grid fins, they are not airbrakes. they are at best stabilizers with higher drag for immediate stability for in the Soyuz in the event of emergency as explained in detail.

Spoiler

@Ziggy1989

In an abort situation, the booster may be in the process of tumbling or exploding or both when the spacecraft separates. Having draggy fins toward the back of the package quickly straightens out its flight. providing the maximum separation from the booster during the powered portion of the escape and allowing the fairing to separate cleanly from the spacecraft after the escape tower burns out.

Stable flight of a rocket requires that the center of aerodynamic pressure be behind the center of mass. The Soyuz LES abort has to carry both the orbital module (uncrewed during launch) and the reentry module (crewed) with it because the orbital module is stacked above the reentry module. The service module below that is left behind during an LES abort.

@Ziggy1989

Without the fins, most of the pressure would manifest at the point where the base of the LES tower meets the top of the spacecraft fairing, above the orbital module. The center of mass is near the top of the orbital module when the LES is ignited, moving backwards as the LES rocket propellant is expended. With the center of mass behind the center of pressure, the stack would be unstable. Adding the fins moves the center of aerodynamic pressure back, yielding a stable configuration.

I just showed you a diagram of the Soy

Regarding the Falcon 9 its Grid fins are specifically designed for control of pitch, roll & yaw of the Falcon 9. They are hypersonic grid fins.

Spoiler

@Ziggy1989

Falcon 9’s first stage is equipped with hypersonic grid fins which manipulate the direction of the stage’s lift during reentry. The fins are placed in an X-wing configuration and are stowed on ascent and deployed during reentry.

@Ziggy1989

In the atmosphere, RCS thrusters aren’t powerful enough to steer the rocket, and the engine isn’t ignited everytime. The body of the rocket can generate a little bit of lift when moving at the right angle, like a Soyuz. Grid fins are strong enough to resist to the hypersonic flow, that means the air goes by with a speed greater than Mach5 = 6150km/h or, for scientist, 1710m.s^-1. They can control the attitude of the Falcon even at high speeds.)

While the fins are relatively small – they measure just 4 feet by 5 feet (about 1m by 1.5m) – they can roll, pitch, and yaw the 14-story stage up to 20 degrees in order to target a precision landing.

Grids Fins acts like classic control surfaces we can find on an airplane. If they roll 2 by 2 in the same direction (“up - down” and “left- right”) they can control Yaw and Pitch. If you roll the 4 of them in the same direction, the Falcon9 has an excellent roll rate.

[Joe_Rogan]

Aren’t the grid fins just used for manoeuvring?

[MiG_23M]

Seriously, try comic sans

[BBCRF]

Kh-38?Kab-250?

[dragonflaine71]

Do you guys know where i can regularly check changes in the game through datamines? I usually check it on Reddit but those take a bit of time for them to post.

[Ziggy1989]

@MiG_23M

You should try comic sans with the bold and enlarged letters

You should try to understand what you are reading before you ever highlight it & try to use it in a written argument.

@MiG_23M

Grid fins on the Falcon 9 are optimized as air brakes to slow the rocket down

This dude then proceeds to own himself with the first “source” he manages to provide…Funniest part is that he took the time to snip a screenshot, highlight in two different colors more proof that Falcon 9 grid fins have nothing to do with airbrakes, post it & directly ping me…

It is the landing gears that are dual use & provides the massive increase in drag to slow the 603 ton vehicle in reentry. it & directly pinged me… Your boy, Elon himself said it. The grid fins are not mentioned because they are irrelevant to the equation.

Now he is worried about bolded text?! lmfao.

Spoiler

Question, when you were sitting there deciding on which highlighter colors to use, how excited where you?

Keep it real, you took the entire day to find what you somehow thought was some sort of mic drop bombshell. You failed to understand the context of what Musk was saying & were hyper fixated on the obvious. Large body surfaces generate drag & can reduce terminal velocity. This does not apply the grid fin, nor does it apply for the Falcon 9. Thats why it was not mentioned in drag and reducing any speeds.

If they were, Musk would have mentioned it as well. He did not because even though he is a hyper capitalist billionaire leader of the bourgeois larping as Tony Stark, he is not uneducated enough to believe hypersonic grid fins (the primary control surfaces the Falcon 9) would be optimized as an airbrake.

Spoiler

This is the most primitive demonstration of an adult’s reading comprehension & the lowest capability to critically think I have ever seen employed in a written argument.

I am actually a little embarrassed that I ever engaged rather than pity.
You cannot even use the internet effectively to reinforce your points without impeaching yourself & highlighting the worst evidence that diffuses your entire thought process.

Dude screeched 24 hours on a completely made-up assumption that the Hypersonic grid fins of the Falcon 9 are actually OPTIMIZED as airbrakes & refused to provide a single source almost the entire time.
When he finally does share his one “source”. A transcribed statement from Elon Musk…

He ignorantly post & even highlights (lol) Musk’s clarification that the landing gear provides sufficient massive drag & are dual use in reducing terminal velocity by 50% upon retry in atmosphere. This dual use in the landing gear reduces the amount of propellant therefore more is available & dedicated to successfully stopping & landing the vehicle,

The 6ft grid fins are not mentioned by Elon Musk nor by any legitimate scientific source of producing enough drag to reduce the immense velocity & inertia (Kinetic Energy) generated by the 229.6 foot tall, 603.96 Ton (1,207,920lb) Falcon 9 as it hits all speed regimes in reentry & while in atmosphere.

It’s not mentioned because it is absolutely the most absurd, uneducated brain-dead idea that it would.

@MiG_23M

Seriously, try comic sans

Spoiler

Oh, look everyone, the textbook tactics of a loser.

When a man feels it necessary to moan about bolded text another man types TWICE because no one cared the first time is not a healthy look. Its only because you have nothing else to say but feel you must.

I specifically enhance the text to draw attention to those who have a poor reading comprehensions its very effective :) Thats why it’s most apparent when I reply to you. If I could draw a picture & use colored text I would because you sure as hell need them in all forms of communications. Understanding context is clearly not your strong suit. As shown in your highlighted “research” above into the Falcon 9 grid fins…

Everyone else can read perfectly fine, retain information & possesses a deeper understanding than basic surface reading. I do not need to bold text with anyone else really. Just you.

[ZVO_12_INCH]

Yes, there was such information…

Spoiler

[BBCRF]

They are not used outside

[_Fantom2451]

6 R-77-1/M outside + 4 R-77M inside

@BBCRF

Can you do it for the F-15 and MiG-29?

Don’t have F-15, can do for MiG-29 later

[MiG_23M]

@Ziggy1989

You should try to understand what you are reading before you ever highlight it & try to use it in a written argument.

Yes! This! So stop highlighting stuff. Or use comic sans so we know you’re posting satire.

(Yes it’s been quite obvious in this discussion that you’re defiantly and arrogantly wrong).

[_Fantom2451]

@MiG_23M

Anyhow, if I recall correctly the maximum R-77’s is 12-16 depending on future Sukhoi variants. I’m excited to see them implement the dual racks on the belly between the nacelles.

You will have to wait for Su-35 for dual racks. It can carry 12 max.