SAC FC-31 Stealth Fighter: News & Discussions

[Akasa]

FC-31 first seen under assembly？

Screen grabs of CCTV programme about AVIC aired last night

By "FC-31", are you referring to the very first prototype or the improved variant (with the medium thrust engines)?

 

[cirr]

By "FC-31", are you referring to the very first prototype or the improved variant (with the medium thrust engines)?

v2.0

 

[Deino]

v2.0

Hmmm ... To admit - and especially since I do not want to destroy Your high hopes - but due to this china above the emblem I think it's the original prototype.

 

[cirr]

Hmmm ... To admit - and especially since I do not want to destroy Your high hopes - but due to this china above the emblem I think it's the original prototype.

View attachment 252148

The 1st pic is indeed the old prototype，as was made evidently clear in the TV programme。

The rest of the screen grabs are NOT（for the camera was led to a different spot in the factory）。

 

[Deino]

Thanks again !

 

[RealNapster]

BTw what's the Unit price (+-) of an FC-31 ??

 

[cirr]

On show again？

 

[mzeeshanfahd]

come on how long are you going to unrap the beauty ...... do it already .... is it v2 ...

 

[Deino]

On show again？

Ohhh ... no images visible ! All i get is "500 Internal Server error" !

Could You please upload them here ??

Deino

 

[cirr]

Ohhh ... no images visible ! All i get is "500 Internal Server error" !

Could You please upload them here ??

Deino

The website from which the images were taken is currently down。

 

[Deino]

The website from which the images were taken is currently down。

Yes, I noticed that the fyjs-forum / Air Force section (http://www.fyjs.cn/forum.php?mod=forumdisplay&fid=27) is down.

And to admit that's one of the reason's I don't like hot-linking images ... I usually save them and upload them here if I want to post them; a bit more work, but if the original link is down, they are still visible.

Deino

 

[Sasquatch]

@cirr when will we see the 2.0 of the 21/31, possibly before the end of the year ?

 

[Pindi Boy]

Here's a point-by-point comparison of frontal RCS for J-31 vs. F-22

Transparent RAM-coated cockpit canopy: J-31 and F-22. Tie.
Continuous curvature upper radome. J-31 and F-22. Tie.
Faceted lower radome. J-31 and F-22. Tie.
DSI (diverterless supersonic inlet). J-31 only. This means J-31 is stealthier.
J-31 is physically smaller. This means J-31 is stealthier. Less area to reflect radar waves.

In evaluating the frontal RCS of the J-31 and F-22 in X-band, the J-31 is stealthier than the F-22 in two categories and ties in three categories. The J-31 has DSI that blocks radar waves from entering the air intakes and reflecting. Thus, the frontal RCS of the J-31 must be marble-sized or smaller.

1. Chengdu J-20 has maxiumum altitude of 65,620 feet. F-22 maxes out at 60,000 feet.
2. Chengdu J-20 has a combat radius of 1,200 miles. F-22 combat radius is only 470 miles.
3. Chengdu J-20 has EOTS (electro-optical targeting system). F-22 has no EOTS.
4. Chengdu J-20 has EODAS (electro-optical distributed aperture system). F-22 has no EODAS.
5. Chengdu J-20 is optimized for both transonic flight and maneuverability. F-22 is optimized only for maneuverability.

Point #5 is a little complicated, so I'll explain it in more detail. The Chengdu J-20 uses a canard-delta wing design to optimize performance in the transonic range of 0.8 to 1.2 Mach. "Leading edge sweep is ~43°, clearly intended for efficient supersonic flight." The Chengdu J-20 has canards, steerable vertical stabilizers, and ventral fins to increase maneuverability.

The F-22 design only maximizes maneuverability by having large trapezoidal wings and 2-D TVC engine nozzles. The friction caused by large wings is a hindrance to efficient transonic flight. The F-22 has a higher and less-efficient leading-edge wing angle of 47.5°.

 

[Development C&P]

The main parameters：
Length：————————————————16.8m
Wingspan：———————————————11.5m
Height：—————————————————4.8m
Maximum takeoff weight：—————————25000kg
Normal takeoff weight：——————————17500kg
Maximum Mach Number：—————————1.8
Service ceiling：——————————————6km
Maximum G-load：————————————+9/-3 g
Airborne oil combat radius：————————1200km
Take-off run：———————————————400m
Landing run ：———————————————600m
Loaded weight ：——————————————8t
Aircraft life ：——————————————6000-8000/30 fh/y

Source: FC-31 in BeiJing AIR SHOW

 

[cirr]

The main parameters：
Length：————————————————16.8m
Wingspan：———————————————11.5m
Height：—————————————————4.8m
Maximum takeoff weight：—————————25000kg
Normal takeoff weight：——————————17500kg
Maximum Mach Number：—————————1.8
Service ceiling：——————————————6km
Maximum G-load：————————————+9/-3 g
Airborne oil combat radius：————————1200km
Take-off run：———————————————400m
Landing run ：———————————————600m
Loaded weight ：——————————————8t
Aircraft life ：——————————————6000-8000/30 fh/y

Source: FC-31 in BeiJing AIR SHOW

The above are parameters pertaining to FC-31 v1.0

FC-31 v2.0 has better specs。