Chengdu next gen combat aircraft (?J-36) thread

bsdnf

Junior Member
Registered Member
Not to mention that in a WESTPAC context the F/A-XX may be more of a consideration than the USAFs project. And the USNs project not only runs seperate and hasn't been put on hold, but also doesn't rely on the NGAP engine. Instead opting for a more powerful conventional engine, like two "super F135s" so to speak. Meaning the program should overall run into less issues because unlike the USAF the Navy seems to be more pragmatic about what they want to fit their needs.

And I think that, among with the reality that the NGAD situation can change rather quickly is more than enough incentive to pursue the CAC and SAC next generation aircraft with the needed resolve. Do I think that's to the detriment of the J-20? Not really.
FAXX is not faster than NGAD, the Navy also doesn't have enough funding to move the program forward
 

00CuriousObserver

Junior Member
Registered Member
Impossible, whales don’t sleep.

But seriously @Deino will be the best person for them to do a podcast with since he is probably the best informed Western authority in PLAAF evolution. If anything I think their boss Erik Lee will be interested in a podcast about J-36 and Western defense sphere response to it.

I would also be interested with Rick in the podcast too.

Honestly, do we have any connections? Maybe it's something we should approach them with

(Off topic, maybe we should have a thread in the suggestions channel about this)
 

sutton999

Junior Member
Registered Member
Gentlemen, I have a revelation. We have been underestimating the whole thing.

The mainstream posters here have been relaying Weibo/Guancha PLA gossipers. Gossipers who have hearsay but no real inside - Oh, I saw three nozzles, three! - Then, come up with some explanation with which their common sense is comfortable.

After 5 minutes of Google image search "NGAD TBCC" and a meditation.
I conclude that both 6-gen are using two TBCC (parallel turbofan + ramjet) engines right now!

How it works in J36:

The middle main shaft (engaged with two TBCCs through transmission) has a large low-pressure fan (LPfan) that is then serially connected to a small turbojet (APU). The flow out of the middle nozzle replaces the need for a large tail boom.

At low altitudes, the middle LPfan acts as extra bypass, thus two TBCCs in tubefan mode have higher bypass ratio.
At high altitudes, the shaft disengages from transmissions, and all engines act in turbojet mode.
At around Mach2, the inlet flow goes through LPfan and then diverts to the ramjet chamber of TBCCs.(there are 6 pipes that do this in J58), TBCCs switch to ramjet mode.
---
Because of this unique configuration, the J36 prototype will only be made when TBCC is ready. The MD series is the platform testing various combined-cycle engines. In USA, SR-72 is the platform that indicates TBCC readiness.

The chief designer of J36, Wang haifeng, who is also the chief of the TBCC project, breakthrough in 2019.

Two things were revealed weeks before J36 debut.
1. MD-19 MD-22,
2. A 13 years research aims at broadbody hypersonic commercial jet. Test done at 6.56 Mach in 2021. The presentation shows this image.
656.jpg
The Russia 6-gen project PAK DP, the designer claims 4-4.3 Mach, up to 45,000 meters.

SR-72 drawing with tail boom
sR72.jpg
SR-72 drawing without tail boom
SR-72 Darkstar Mach 6.jpg


------------
"The J58 engine had a bypass system that allowed some of the air entering the inlet to be diverted around the engine core and into the afterburner. This bypass air provided additional thrust and cooling at high speeds and also reduced the compressor surge and the inlet pressure recovery."
J58.jpg

------
XD Talon.JPG
 

Nx4eu

Junior Member
Registered Member
Gentlemen, I have a revelation. We have been underestimating the whole thing.

The mainstream posters here have been relaying Weibo/Guancha PLA gossipers. Gossipers who have hearsay but no real inside - Oh, I saw three nozzles, three! - Then, come up with some explanation with which their common sense is comfortable.

After 5 minutes of Google image search "NGAD TBCC" and a meditation.
I conclude that both 6-gen are using two TBCC (parallel turbofan + ramjet) engines right now!

How it works in J36:

The middle main shaft (engaged with two TBCCs through transmission) has a large low-pressure fan (LPfan) that is then serially connected to a small turbojet (APU). The flow out of the middle nozzle replaces the need for a large tail boom.

At low altitudes, the middle LPfan acts as extra bypass, thus two TBCCs in tubefan mode have higher bypass ratio.
At high altitudes, the shaft disengages from transmissions, and all engines act in turbojet mode.
At around Mach2, the inlet flow goes through LPfan and then diverts to the ramjet chamber of TBCCs.(there are 6 pipes that do this in J58), TBCCs switch to ramjet mode.
---
Because of this unique configuration, the J36 prototype will only be made when TBCC is ready. The MD series is the platform testing various combined-cycle engines. In USA, SR-72 is the platform that indicates TBCC readiness.

The chief designer of J36, Wang haifeng, who is also the chief of the TBCC project, breakthrough in 2019.

Two things were revealed weeks before J36 debut.
1. MD-19 MD-22,
2. A 13 years research aims at broadbody hypersonic commercial jet. Test done at 6.56 Mach in 2021. The presentation shows this image.
View attachment 144130
The Russia 6-gen project PAK DP, the designer claims 4-4.3 Mach, up to 45,000 meters.

SR-72 drawing with tail boom
View attachment 144128
SR-72 drawing without tail boom
View attachment 144129


------------
"The J58 engine had a bypass system that allowed some of the air entering the inlet to be diverted around the engine core and into the afterburner. This bypass air provided additional thrust and cooling at high speeds and also reduced the compressor surge and the inlet pressure recovery."
View attachment 144131

------
View attachment 144134
It's not that we've been underestimating it, we've just been realistic. I know it's foolish to rely on eyeball mk1 to analyze fluid dynamics, but there is nothing on the J-36 that suggests it's capable of hypersonic speeds. Even given all your fanart here, the J-36 shares no characteristics with any hypersonic concept. So how can we not believe what you said is just pure nonsense?
 

Deino

Lieutenant General
Staff member
Super Moderator
Registered Member
Gentlemen, I have a revelation. We have been underestimating the whole thing.

The mainstream posters here have been relaying Weibo/Guancha PLA gossipers. Gossipers who have hearsay but no real inside - Oh, I saw three nozzles, three! - Then, come up with some explanation with which their common sense is comfortable.

After 5 minutes of Google image search "NGAD TBCC" and a meditation.
I conclude that both 6-gen are using two TBCC (parallel turbofan + ramjet) engines right now!

How it works in J36:

The middle main shaft (engaged with two TBCCs through transmission) has a large low-pressure fan (LPfan) that is then serially connected to a small turbojet (APU). The flow out of the middle nozzle replaces the need for a large tail boom.

At low altitudes, the middle LPfan acts as extra bypass, thus two TBCCs in tubefan mode have higher bypass ratio.
At high altitudes, the shaft disengages from transmissions, and all engines act in turbojet mode.
At around Mach2, the inlet flow goes through LPfan and then diverts to the ramjet chamber of TBCCs.(there are 6 pipes that do this in J58), TBCCs switch to ramjet mode.
---
Because of this unique configuration, the J36 prototype will only be made when TBCC is ready. The MD series is the platform testing various combined-cycle engines. In USA, SR-72 is the platform that indicates TBCC readiness.

The chief designer of J36, Wang haifeng, who is also the chief of the TBCC project, breakthrough in 2019.

Two things were revealed weeks before J36 debut.
1. MD-19 MD-22,
2. A 13 years research aims at broadbody hypersonic commercial jet. Test done at 6.56 Mach in 2021. The presentation shows this image.
View attachment 144130
The Russia 6-gen project PAK DP, the designer claims 4-4.3 Mach, up to 45,000 meters.

SR-72 drawing with tail boom
View attachment 144128
SR-72 drawing without tail boom
View attachment 144129


------------
"The J58 engine had a bypass system that allowed some of the air entering the inlet to be diverted around the engine core and into the afterburner. This bypass air provided additional thrust and cooling at high speeds and also reduced the compressor surge and the inlet pressure recovery."
View attachment 144131

------
View attachment 144134

Can we stop please with this nonsense?yoj try to Tell us that after five minutes of googleing you Are Share the J-36 not only idea a so far unknown powerplant but also is capable of performances none of the credible and since years well-respected „big Shrimps“ are denying?
Really. Stop this BS!!
 

sutton999

Junior Member
Registered Member
It's not that we've been underestimating it, we've just been realistic. I know it's foolish to rely on eyeball mk1 to analyze fluid dynamics, but there is nothing on the J-36 that suggests it's capable of hypersonic speeds. Even given all your fanart here, the J-36 shares no characteristics with any hypersonic concept. So how can we not believe what you said is just pure nonsense?
I haven't suggested hypersonic, just TBCC ramjet. Mach 3.5-4 if I have to?
 
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