Launchers on J20 seem fixed for the time being restricting flight profiles in which it can release any weapon.
Click for real thing..https://theaviationist.com/wp-content/u ... er-bay.jpg

What is powering this thing?Singha wrote:new CH5 drone with 67 hour endurance
https://www.rt.com/news/365290-china-ex ... per-rival/
Bradley Perrett, Dan Katz, Graham Warwick Zhuhai
The Chinese military is often criticized for a lack of transparency, for keeping quiet about weapons programs that Western countries, at least, would discuss long before entry into service. But in the case of the Avic J-20 fighter China has been far less secretive than usual.
So the appearance of two J-20s at Airshow China at Zhuhai on Nov. 1 was not the public unveiling widely reported in the general media. Avic and the air force have publicly flown the big fighter in its test program. Even the first flight in January 2011 was watched by a crowd of enthusiasts.Two aircraft arrived but one soon left
The J-20 that maneuvered for the crowd had features that did not look very stealthy
But it also had edge treatment previously seen on aircraft that may have been early production units
Still, the appearance of the two aircraft at Zhuhai offered an opportunity for useful observation. One of them may have been an early unit intended for squadron service. Like two J-20s that have been seen with a new sequence of serial numbers that suggested the beginning of a volume production run, the aircraft had a surface treatment behind its radome intended to control energy received from enemy radars.
But the same aircraft also had a distinctly nonproduction feature: what looked like two ill-fitting access panels on its upper fuselage between the engines. Projecting perhaps 1 cm (0.4 in.) from the surrounding structure, they could ruin stealth characteristics and would therefore be unacceptable for a production aircraft. Since they were serrated to disperse radio energy, they looked like permanent features, not some kind of temporary addition.
This was the aircraft that performed aerobatics at the show. The other left shortly after arrival, no doubt because program managers were unwilling to risk maneuvering two in close proximity. Both are likely employed in development, since the U.S. Department of Defense does not expect the type to enter service before 2018.Each aircraft had a small pod under its fuselage, near the likely position of the front of the left engine. This could have housed some kind of instrumentation, or perhaps a device intended to strongly reflect radar transmissions, ensuring that the aircraft’s true signature could not be measured.
Other features that did not look very stealthy included bulges for lights above and below the wingtips.
In the maneuvers, the pilot generally avoided climbing much while turning, suggesting no abundance of thrust was available—or that the full potential of the engines was not used. Another possibility is that the pilot was simply being careful with a valuable aircraft. The engines in prototype J-20s are probably 27,500-lb.-thrust AL-31Fs from Russia’s United Engine CorChengdu Aircraft, one of the two fighter works of Avic defense subsidiary Avic Aviation Techniques (AAT), is developing the J-20. The design has changed during flight testing, notably in adopting a more slender fuselage section aft of the main landing gear. That should significantly extend the time needed for development. So if the J-20 enters service in 2018 or soon after, it will probably not be mature, says a senior combat-aircraft engineer from another country who has been observing the program.
The J-20’s primary missions are not confirmed, though its evidently large internal fuel volume provides a good clue. According to one theory, the type is intended to exploit its stealth and perhaps an ability to cruise supersonically to penetrate hostile fighter lines and destroy valuable air targets in the rear, such as tankers and surveillance aircraft. Another possibility is that the Chinese have calculated that a large design with long endurance will provide more fighting power on station when combat arises, since aircraft will not need to retire so frequently for refueling.
Perhaps the biggest question about China’s first stealth fighter is just how stealthy it is. The body has a well-disciplined shape of blended facets for controlling direct reflections and minimizing radio energy emitted by currents as they travel along surfaces and bounce off discontinuities. Serrations direct the surface waves away from the boresight, the most dangerous direction, and edge treatments have been latterly applied to reduce surface waves and suppress diffraction.
The body is also shallow, with its volume distributed more laterally than has been usual in earlier fighters. The reflective side area is thereby reduced.
But the J-20 has six aerodynamic surfaces in addition to the two sides of the mainplane, and their edges are not aligned. Further, the engine nozzles remain conventional, not designed to control reflections. Tail booms, used in the Lockheed Martin F-22 and F-35 to shield the nozzles from radars abeam, seem to be placed a little high to do that job properly. The aircraft is likely less stealthy in the aft quadrant than the F-22 or even F-35.
Like the F-22, the J-20 has ventral weapon bays, but they are shorter and narrower, apparently capable of accommodating only four weapons the size of the SD-10 air-to-air missile. They could accept bigger missiles with folding fins. China is reported to be negotiating to buy the Russian Kh-58UShKE, a Mach 4 anti-radar missile that is also intended for internal carriage on the Sukhoi T-50.
Little is known about the avionics on the J-20. The radome shape reveals that the radar antenna cannot be large. Whether that antenna will be an active, electronically scanned array is an important but unanswered question. A faceted fairing, likely housing an electro-optical targeting system as on the F-35, appeared below the nose on the third and fourth prototypes, as did a small fairing for a missile-warning sensor on the ventral fuselage, just aft of the right weapons bay.
Avic flew another stealth fighter at Airshow China in 2014. This was the J-31, or FC-31, which AAT’s other main combat-aircraft subsidiary, Shenyang Aircraft Corp., designed and built as an in-house project after losing the competition with Chengdu Aircraft for what became the J-20.
While the J-20 is comparable in size to the F-22 Raptor, the J-31 is closer to the F-35 Lightning. The big difference is that the J-31 is not assured of operational service. That is why it appeared at Zhuhai before the J-20, even though it was developed later. The armed forces control exposure of their new equipment, but the manufacturers are fairly free to show off what they hope to sell to foreigners, which is Shenyang Aircraft’s hope for the J-31.
Still, the air force has previously adopted aircraft that manufacturers created without a development contract, so the possibility of the J-31 entering Chinese service cannot be ruled out. Shenyang Aircraft did not fly it at Airshow China this year.
Chengdu Aircraft won an earlier competition for an air force fighter with what has become the J-10, which is likely to be the mainstay of the air-combat force. While the first version, the J-10A, was used by the air force display team at Zhuhai, the J-10B was exhibited on the ground. This was its first appearance at the show.
A key improvement is a diverterless supersonic inlet, eliminating the plate that fighters have used since the 1950s to slice the turbulent boundary layer from the airflow into the engine.
The Pentagon said in May that the J-10B was expected to enter service in the near term. Accordingly, China has displayed this new equipment for public inspection at close quarters at around the time when it will equip the air force.
Hmmm - here is what I said earlier..same thingbrar_w wrote:J-20 At Zhuhai Shows Unstealthy Features
Bradley Perrett, Dan Katz, Graham Warwick Zhuhai
In the maneuvers, the pilot generally avoided climbing much while turning, suggesting no abundance of thrust was available—or that the full potential of the engines was not used. Another possibility is that the pilot was simply being careful with a valuable aircraft.
shiv wrote: When a plane turns on its side i.e rolls 90 deg there is a loss of lift that causes the plane to lose altitude - in a movement that I have heard described as a side slip. In airshows I have observed pilots in tight turns prevent or reduce loss of altitude by either maintaining a slight "yaw" - so that tailfin lift, which will push the nose down gets compensated by yawing the nose.
For some reason the J-20 at 18 and 34 seconds does not do that - and in the 90 degree roll attitude the nose can be seen to drop and the plane loses altitude. I am not reaching any conclusions about this - the pilot may merely have wanted to stay close to the ground and crowd. But a tight turn in a combat situation will also cause a loss of altitude like this unless compensated by a yaw - and that requires extra power. Lack of power causing loss of altitude was exactly what the HF-24 was accused of in turns.
Well,Since When can russian make such drones?chola wrote:What is powering this thing?Singha wrote:new CH5 drone with 67 hour endurance
https://www.rt.com/news/365290-china-ex ... per-rival/
It is a straight-forward engine efficiency thing to make a vehicle go more than two days with a "24" missile load.
How did they come up with something on the order of the MQ-9's Garret if the specs are true? Russians?
Liu wrote:Well,Since When can russian make such drones?chola wrote:
What is powering this thing?
It is a straight-forward engine efficiency thing to make a vehicle go more than two days with a "24" missile load.
How did they come up with something on the order of the MQ-9's Garret if the specs are true? Russians?
Liu, what are your thoughts on the J20 being powered by a SU27 engine? Any truth in that?Liu wrote:well,
can you imagine that
anupmisra wrote:Liu, what are your thoughts on the J20 being powered by a SU27 engine? Any truth in that?Liu wrote:well,
can you imagine that
Oh shit! Why do the Chinese do this? The video is fake - Suddenly strings appear to be joining up all the drones. Here's a videograbLiu wrote:http://v.ifeng.com/news/mainland/201611 ... aaeb.shtml
http://v.ifeng.com/mil/other/201611/01c ... aaeb.shtml
china successfully tested " smart drones wave system" for the first time.
Well,Prasad wrote:Liu,
From where do these drones get launched from and what'll their Range be? If detected(big if) enemy aircraft can outrun/bypass them easily.
In 1962 and in the Korean war Chinese soldiers did just this. Attack in waves. they also got killed in large numbers. Those toy drones are too small to be a huge threat. I think there is some vivid imagination going on here - but I only need someone from America to tell me that the US has done it so it must be a great and wholesome thing in US hands..Liu wrote:Well,Prasad wrote:Liu,
From where do these drones get launched from and what'll their Range be? If detected(big if) enemy aircraft can outrun/bypass them easily.
The core tech is not drones,but The control/communication system that runs So many drones and launch drone waves.
If Such One system can make many mini drones “drone wave” It can also run many large drones(say mq9/ch5)“drone wave”.
Liu wrote:well,
can you imagine that Su30K or LCA meet the attack from hundreds of such smart mini drones, which are controlled by only one team ?
obvioulsy , however hard Su30MK fight ,one su30MKK can not shoot all such mini drones down.....and is destined to be defeated by those "drone waves" at last.
BTW, the last record of such "smart drone war" is created by Yankees, they contolled 50 drones at the same time.
1) Electronic counter measures for breaking the datalink, followed by basic gunwork can take out most of these low-speed swarms, as do a lot of radar-laid AA guns like Skyshield. If you go for highspeed drones, the costs increase exponentially for China.Liu wrote: The core tech is not drones,but The control/communication system that runs So many drones and launch drone waves.
If Such One system can make many mini drones “drone wave” It can also run many large drones(say mq9/ch5)“drone wave”.
This video shows that "state of the art" is still external control with some autonomous capability. The Chinese drone claim is currently a bluff. As we have seen the Chinese propensity to bluff is based on Sun Tzutiyapa of scaring the carp out of others and winning wars without fighting. I surprise myself by actually feeling more disappointed than happySingha wrote:see the demo here
Surely yes. But how much cheaper do you think these swarms of drones are going to cost to design and maintain.Liu wrote:well,
can you imagine that Su30K or LCA meet the attack from hundreds of such smart mini drones, which are controlled by only one team ?
obvioulsy , however hard Su30MK fight ,one su30MKK can not shoot all such mini drones down.....and is destined to be defeated by those "drone waves" at last.
such “drones wave” surely will change the game of air fight.
that is what Chinese sicentist are devloping...
BTW, the last record of such "smart drone war" is created by Yankees, they contolled 50 drones at the same time.
Austin wrote:If the J-20 Stealth Fighter Is So Amazing Why Is China Buying Russia's Su-35?
http://nationalinterest.org/blog/the-bu ... ign=buffer
Aah! I did not know that parts of this research has been made public. Good to see many familiar faces in that video.brar_w wrote:The issue is survivability. No one is going to counter these drones with missiles or even the gun. The way to deal with swarm drones is to go after the very thing that makes them work i.e. networks. Same thing with cheap UAV's that leaverage commercial technologies..you can't have military technology that is many times more expensive as a viable counter strategy. You need to rope in commercial technology and make them go after these things and have the expensive options exist only as backup. There are CSWaP challenges with tiny micro swarm drones..your networks are only as robust and hardened as your ability to develop highly resiliant ones within those CSWaP challenges!.
This was the ONR funded drone swarm demo at Georgia Tech - Mostly derived using comerrical technology. The USN is actually thinking this tactically and has a back end network and even launchers in the dev. testing phase but this peice (video) is largely commercially derived. They have put (or are about to soon) as many as 30 off of a ship at sea.
https://www.youtube.com/watch?v=OwSj-iQ09n0
https://www.youtube.com/watch?v=8FukTsKmXOo
Rusians Did in 1960s ,BUT found It Did not work ,So gave up.chola wrote:The chinis will cheat, lie and steal to get to where they want. I do not blame them for that.
And simply by looking at the plethora of systems they have available for exports proves that the strategy worked.
But it is not possible that they did this on their own even by "copying" and "cloning." You can make a copy of the F-16 in your garage (you have a big harage and unlimited funds) but it wouldn't fly. But if Lockheed Martin had stepped in to advise you (and you had unlimited funds) then the chance of it flying improves exponentially.
The chinis are able to make viable the J-20 and the J-31 and the JF-17 and the J-10 ONLY with explicit help from the Russians. Hell, none of them would even fly without Russian engines.
If we want to narrow the gap with the PRC, leverage our "partnership" with the russkies to cut off their support for the chinis. Overnight, all development will stop in the PLAF if the Russians withhold aid.
If the russians refuse, then they can go to hell with their crap.
Liu wrote: Rusians Did in 1960s ,BUT found It Did not work ,So gave up.
J-10 and JH-7 aren't Russian design.aditp wrote:Liu wrote: Rusians Did in 1960s ,BUT found It Did not work ,So gave up.
Oh Yes! It did work. The PLAAF didnt have a forward deployable airforce until the late 80s/early 90s till the Soviet Union went kaput and the cash strapped Russians supplied Su-27s to China, and the Chinese had the opportunity to hire out of job Russian scientists and engineers. All your frontline aircraft today are Russian designs. NONE are Chinese. FACT.
well ,in fact, in 1970s-1980s, tech block did not exist, because yankees and west countries would sell most techs to CHina.aditp wrote:Liu wrote: Rusians Did in 1960s ,BUT found It Did not work ,So gave up.
Oh Yes! It did work. The PLAAF didnt have a forward deployable airforce until the late 80s/early 90s till the Soviet Union went kaput and the cash strapped Russians supplied Su-27s to China, and the Chinese had the opportunity to hire out of job Russian scientists and engineers. All your frontline aircraft today are Russian designs. NONE are Chinese. FACT.