Chinese Air Force (PLAAF) News & Discussions

[MiG-35-BD]

Bottom line is 601 has yet to prove itself, and is an inefficient white elephant of an organization. 611 makes them look bad.

To have an efficient sub contractor base, one has to have open bidding competition, not strict cabalistic dealings. That is what I said if you re-read what I wrote.

 

[帅的一匹]

From Chinese online community, there is a more sensible story that CAC, mainly Institute 611, used subcontractors from space, electronic, ordnance and even ship building industry, whereas SAC and Institute 601 has been always strictly followed orders from their AVIC bosses and subcontracted with other AVIC companies. For sometime in the J-20 program, the PLAAF had to intervene to repel distraction from the AVIC management.

This issue plus some others must have been escalated to the top leadership of the Communist Party. So the real estate, engine and large passenger aircraft businesses were all stripped away from AVIC and former AVIC head Lin Zuoming was forced retired.

Let AVIC go to hell. We need China types of Lockheed Martin and Boeing.

 

[Zarvan]

A Chinese J-10 fighter squadron in Tibet

"Once the engine problem is solved, Chinese planes will be able to easily take off and land in high-altitude areas, making India's air force less effective," Hong Kong-based military analyst Leung said

China's third generation fighter jets seem to have overcome their engine problems plaguing them while flying over high-altitude regions in Tibet bordering India, according to a media report today.

The People's Liberation Army (PLA) has posted video footage of drills by Chengdu J-10 and Shenyang J-11 fighter jets flying low over snow-capped mountains on Monday, suggesting that the military has overcome engine problems afflicting the aircraft at high altitude areas, the Hong Kong-based South China Morning Post (SCMP) reported.

The jets are part of China's fleet of third-generation lightweight multi-role fighter aircraft, powered by Russian AL-31F engines. The J-11 is also part of fleet of China's third-generation fighter aircraft.

According to military observers, the engines had previously lost power above 3,000 metres, leading to a string of accidents, the report said, a rare revelation of the problems faced by the Chinese fighter aircraft in the high-altitude region.

In September 2015, a J-10 from the former Shenyang Military Region crashed during a night patrol when the plane climbed above 3,350 metres, state-run China Central Television reported.

The footage also showed a Shaanxi Y-9 transport aircraft taking off and landing at a high-altitude airport. The Y-9 can carry 106 passengers or 132 troops at one time, the Post report said.

A Xian JH-7 fighter-bomber is also seen flying over the snow-covered terrain, filling out the combat line-up in the PLA Air Forces' Western Theatre Command, which ranges from Chongqing to Tibet and Xinjiang.

"In various exercises, we not only target imaginary rivals, but focus more on acquiring useful and effective combat skills," Zhan Houshun, the western theatres air force commander, said.
Military analysts said the apparent smooth flights by the warplanes in the latest drills suggested the air force had overcome the engines high-altitude problems, bolstering the PLA's defences against India.

Beijing-based military commentator Song Zhongping said the lack of air pressure at high altitudes made flying difficult, a situation complicated by variations in airflow in mountainous terrain.

"The video showed that the engines in Chinese warplanes have been improved in terms of stability over complex geography. It also signalled that China has set up a highly specialised air wing in the country's west," Song was quoted as saying by the Post.

Hong Kong-based military analyst Leung Kwok-leung said the improvements would strengthen China's air defence against India.

"Once the engine problem is solved, Chinese planes will be able to easily take off and land in high-altitude areas, making India's air force less effective," Leung said.

https://economictimes.indiatimes.co...gine-problems-report/articleshow/63321125.cms

 

[war&peace]

That's a good news.

 

[lcloo]

Who is the reporter writing this rubbish? Aircraft may have problems taking off from a high altitude runway due to thin air, but certaintly not while flying above 3,000 metres!!!

And the problem of taking off while carrying full load has been solved by a simple solution - simply just extend the length of the runway.

 

[Deino]

Who is the reporter writing this rubbish? Aircraft may have problems taking off from a high altitude runway due to thin air, but certaintly not while flying above 3,000 metres!!!

And the problem of taking off while carrying full load has been solved by a simple solution - simply just extend the length of the runway.

To admit ... again a pure plain stupid BS-report. It starts with an old image showing several J-10As clearly NOT in Tibet and continues with a lot more worthless crap.

 

[randomradio]

I doubt there's any truth to that. We operate the same engines normally.

 

[JSCh]

Advances in military technology give China edge in Asia-Pacific
By Yang Sheng Source:Global Times Published: 2018/4/3 17:38:39

The pictured is early-warning radar in square formation during a military parade at Zhurihe training base in north China's Inner Mongolia Autonomous Region, July 30, 2017, to mark the 90th founding anniversary of the People's Liberation Army. Photo: IC

China has made significant achievements in radar and strategic bomber technology, according to scientists working in the fields, adding that its military radars can now detect all kinds of stealth fighter jets and bombers deployed in the Asia-Pacific region.

Hu Mingchun, director of the No.14 research institute under the China Electronic Technology Group Corporation (CETC), and also a deputy of the National People's Congress, told the media, "China's radar technology is comprehensively approaching world-class level or is as advanced as foreign technology in general. Now we are at the stage of moving up to the leading role."

"In some areas, China already uses the most advanced radar technology in the world, such as ship-based multi-function phased array radar and airborne early-warning radar," Chinese news portal thepaper.cn quoted Hu as saying on March 29.

Growing challenges

In recent years, the US and its allies have deployed multiple stealth aircraft around China in the Asia-Pacific region.

In October 2017, 12 F-35A fighter jets arrived in Japan, marking the US Air Force's first-ever F-35 deployment to the Asia-Pacific region, the Defense News reported.

More F-35 will be deployed in the coming years, Jane's 360 reported.

"Since the US developed the F-117 in 1981, the increasing development and deployment of the stealth aircraft have brought serious challenges to other countries' homeland air defense," Hu said.

"Targeting the new generation of stealth aircraft's high-altitude, high-speed and advanced stealth capability, China's new generation of anti-stealth radar has been developed, and through practice, its capability in real combat has been proven. The technological competition between stealth and anti-stealth technologies will not stop in the long term," Hu noted.

In November 2016, the CETC's anti-stealth radar YLC-8B, developed by the No.14 research institute, was displayed at the Airshow China 2016 in Zhuhai, South China's Guangdong Province.

"China's anti-stealth radars can detect all kinds of stealth aircraft that the US has deployed in the Asia-Pacific region, including the F-22, F-35 and B-2, which means that when the US wants to use these aircraft to deter China, it has to take into consideration China's radar systems, because they will be detected by Chinese radars and shot down in real combat," Song Zhongping, a military expert and a commentator on Phoenix TV, told the Global Times.

Early warnings

In addition to anti-stealth radar, China also possesses long-range early warning phased array radar, making it the third country after the US and Russia with the capability to conduct independent development of this kind of radar, Hu said. "This has laid a solid foundation for China's anti-missile early warning system."

This kind of radar targets strategic threats such as incoming ballistic missiles, providing enough time for the system to intercept the missile, Song said.

China has also made great strides in strategic bombers. The H-6k is not a newly developed bomber, but its increasing presence in the Asia-Pacific region shows that China is becoming more confident in using its strategic deterrence, said a scholar from a Beijing-based PLA military academy who requested anonymity.

"A nuclear power should have multiple strategic deterrence measures including land-based ballistic missiles, nuclear submarines and strategic bombers. Although currently the H-6k is not at the same level as the US and Russia's most advanced stealth strategic bombers, it's enough for China to deter secessionists in Taiwan since it can carry bombs and cruise missiles to strike military targets on the island from all directions," he noted.

According to the Xinhua News Agency, He Shengqiang, head of the team responsible for the H-6k's development under the Aviation Industry Corporation of China, said, "H-6k's capabilities on information countermeasures and awareness have already reached the level of third and fourth generation bombers.

"The development of the future bombers" is our duty in the new era, and "we need to become the standard maker of this technology, and play the leading role in the future bomber's combat modality," He said.

China's new generation H-20, believed to be a stealth strategic bomber similar to the B-2, is under development.

 

[Bussard Ramjet]

Advances in military technology give China edge in Asia-Pacific
By Yang Sheng Source:Global Times Published: 2018/4/3 17:38:39

The pictured is early-warning radar in square formation during a military parade at Zhurihe training base in north China's Inner Mongolia Autonomous Region, July 30, 2017, to mark the 90th founding anniversary of the People's Liberation Army. Photo: IC

China has made significant achievements in radar and strategic bomber technology, according to scientists working in the fields, adding that its military radars can now detect all kinds of stealth fighter jets and bombers deployed in the Asia-Pacific region.

Hu Mingchun, director of the No.14 research institute under the China Electronic Technology Group Corporation (CETC), and also a deputy of the National People's Congress, told the media, "China's radar technology is comprehensively approaching world-class level or is as advanced as foreign technology in general. Now we are at the stage of moving up to the leading role."

"In some areas, China already uses the most advanced radar technology in the world, such as ship-based multi-function phased array radar and airborne early-warning radar," Chinese news portal thepaper.cn quoted Hu as saying on March 29.

Growing challenges

In recent years, the US and its allies have deployed multiple stealth aircraft around China in the Asia-Pacific region.

In October 2017, 12 F-35A fighter jets arrived in Japan, marking the US Air Force's first-ever F-35 deployment to the Asia-Pacific region, the Defense News reported.

More F-35 will be deployed in the coming years, Jane's 360 reported.

"Since the US developed the F-117 in 1981, the increasing development and deployment of the stealth aircraft have brought serious challenges to other countries' homeland air defense," Hu said.

"Targeting the new generation of stealth aircraft's high-altitude, high-speed and advanced stealth capability, China's new generation of anti-stealth radar has been developed, and through practice, its capability in real combat has been proven. The technological competition between stealth and anti-stealth technologies will not stop in the long term," Hu noted.

In November 2016, the CETC's anti-stealth radar YLC-8B, developed by the No.14 research institute, was displayed at the Airshow China 2016 in Zhuhai, South China's Guangdong Province.

"China's anti-stealth radars can detect all kinds of stealth aircraft that the US has deployed in the Asia-Pacific region, including the F-22, F-35 and B-2, which means that when the US wants to use these aircraft to deter China, it has to take into consideration China's radar systems, because they will be detected by Chinese radars and shot down in real combat," Song Zhongping, a military expert and a commentator on Phoenix TV, told the Global Times.

Early warnings

In addition to anti-stealth radar, China also possesses long-range early warning phased array radar, making it the third country after the US and Russia with the capability to conduct independent development of this kind of radar, Hu said. "This has laid a solid foundation for China's anti-missile early warning system."

This kind of radar targets strategic threats such as incoming ballistic missiles, providing enough time for the system to intercept the missile, Song said.

China has also made great strides in strategic bombers. The H-6k is not a newly developed bomber, but its increasing presence in the Asia-Pacific region shows that China is becoming more confident in using its strategic deterrence, said a scholar from a Beijing-based PLA military academy who requested anonymity.

"A nuclear power should have multiple strategic deterrence measures including land-based ballistic missiles, nuclear submarines and strategic bombers. Although currently the H-6k is not at the same level as the US and Russia's most advanced stealth strategic bombers, it's enough for China to deter secessionists in Taiwan since it can carry bombs and cruise missiles to strike military targets on the island from all directions," he noted.

According to the Xinhua News Agency, He Shengqiang, head of the team responsible for the H-6k's development under the Aviation Industry Corporation of China, said, "H-6k's capabilities on information countermeasures and awareness have already reached the level of third and fourth generation bombers.

"The development of the future bombers" is our duty in the new era, and "we need to become the standard maker of this technology, and play the leading role in the future bomber's combat modality," He said.

China's new generation H-20, believed to be a stealth strategic bomber similar to the B-2, is under development.

Can the radar track the stealth aircrafts in their stealthy flying mode in real time?

 

[帅的一匹]

Can the radar track the stealth aircrafts in their stealthy flying mode in real time?

It's not video game, it's real.

 

[LKJ86]

 

[ozranger]

Starting jet engines in high altitude could be problematic because the starter degrades in power greatly in high altitude. Reportedly PLAAF's engineers fixed the engine starting problem on imported Su-27 in trial deployment to Tibet and passed on the experience to SAC and CAC for improving engine starting facility with AL-31F/FN mounted on J-11 and J-10. This problem is very unique and only applies to aircraft, especially military aircraft, operated in Tibet.

 

[Figaro]

Who is the reporter writing this rubbish? Aircraft may have problems taking off from a high altitude runway due to thin air, but certaintly not while flying above 3,000 metres!!!

And the problem of taking off while carrying full load has been solved by a simple solution - simply just extend the length of the runway.

Probably some ignorant SCMP reporter like Minnie Chan again. She was the same one who said that China couldn't manufacture single crystal blades, the WS-15 exploded on the testing rig, and that the J-15 couldn't take off from steam cats because of their "heaviness". And of course, let's not forget about the totally 100% credible SCMP "unnamed sources". Given their past experience, I'm not surprised of this bull

Starting jet engines in high altitude could be problematic because the starter degrades in power greatly in high altitude. Reportedly PLAAF's engineers fixed the engine starting problem on imported Su-27 in trial deployment to Tibet and passed on the experience to SAC and CAC for improving engine starting facility with AL-31F/FN mounted on J-11 and J-10. This problem is very unique and only applies to aircraft, especially military aircraft, operated in Tibet.

But 3000 meters???

 

[ozranger]

But 3000 meters???

It has nothing to do with that stupid report. What I tried to say is that there is a problem when starting a jet engine like AL-31F/FN in high altitude. As reported the problem is not on the engine itself but on the starter. In early years PLAAF engineers resolved the problem on imported Su-27 by splitting the start process into stages. This problem is now completely gone on all indigenously manufactured J-11, J-10 and other aircraft. So I guess there is an experience transfer from PLAAF and physical improvement on the design of the starters or start procedures.

Obviously now it is pretty easy to have major jet planes including J-11, J-10, JH-7 and large jet propelled UAVs deployed to Tibet.

 

[lcloo]

The problems of taking off in high altitudes has been resolved. Every new aircraft proto-types have to pass high altitude take off test before PLAAF accepts them (Z-20, Y-20, J-20, Z-18 etc). To understand the problem, we have to look at two things.

(1) the thin air in high altitude means less air pressure difference is asserted on the aircraft's wings during take-off, thus render lower lift. To generate sufficient lift to take off with full load, greater speed is required. The solution is building longer runway upto 5 km in length.

(2) thin air also means less oxygen per cubic metre, thus engine combustion is rendered less efficiency. The solution is to make sure adequate oxygen (or some other highly combustible gas) is suck into the combustion chamber of the engine. How PLAAF did that ? I don't know, may be they install oxygen injection noozzles inside the engine?