I don't think that the J-20 has the luxury of carrying drop tanks though. Considering the fact that the center of balance is in the back putting a couple of fuel tanks on might render the plane unflyable.
J-20... The New Generation Fighter II
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I don't think that the J-20 has the luxury of carrying drop tanks though. Considering the fact that the center of balance is in the back putting a couple of fuel tanks on might render the plane unflyable.
Quickie
Colonel
This whole affair is a myth. I did a quick google check and found out that the F-101 is heavier than the AL-31, with its length varying about AL-31, depending on the variants. Remember that a 23% increase in weight would translate to a much smaller increase in dimensions. Would a less than half a metre increase in dimension really matters? Looks to me it's another of those fanboy's egoistic dream that China designs its jet fighter according to the availbility of jet engines.
If the tanks are made of composite... they don't have to drop them, fuel don't reflect radar wave... but if they want to dogfight without loosing their wing(like some f-16 pilot in the 1980) they have to drop them or empty them before or apply some limitation in g force when turning
Composite materials do reflect some radar waves and may contribute significantly to the RCS.
He didn't even get the facts right. Lavi uses PW1120 engine (not F-101) with 91.5kn trust. J-10's AL-31's trust is 122.5kn. That's about 30% more trust. Of course it is bigger and heavier.
kwaigonegin
Colonel
does anyone know if J20 have supercruise capability? In my opinion that would be a huge variable in determining the size/range of it's design based on PLAAF's strategic plan to use this platform as an air to air area denial vehicle out to the 1st island chain.
BAJRANGBAL
New Member
Indian sentenced in US court for selling stealth secrets to China. That's HOT...
J-20 stealth fighter jet 'innovative, not stolen from US plane'
* Source: Global Times
* [08:06 January 25 2011]
* Comments
By Song Shengxia
Chinese defense officials and military analysts insisted Monday that the country's J-20 stealth fighter jet is a result of technological innovation, refuting a report that alleges the aircraft was developed out of technology gleaned from a downed US fighter.
A Croatian admiral who served during the Kosovo War told the AP on Sunday that China formulated the technology for its J-20 jet from a F-117 Nighthawk stealth fighter that was shot down over Serbia in 1999.
"At the time, our intelligence reports told of Chinese agents criss-crossing the region where the F-117 disintegrated, buying up parts of the plane from local farmers," Admiral Davor Domazet-Loso was quoted as saying. "We believe the Chinese used those materials to gain an insight into secret stealth technologies."
An official at the Ministry of National Defense who declined to be named told the Global Times that "it's not the first time foreign media has smeared newly unveiled Chinese military technologies. It's meaningless to respond to such speculations."
China successfully debuted the J-20 in Chengdu, Sichuan Province, earlier this month. The test flight coincided with US Defense Secretary Robert Gates' visit to Beijing, but he was assured the timing was just a coincidence.
Following the successful test flight, speculations and assessments of Beijing's military advancement could be heard throughout the world.
Xu Yongling, one of China's top test pilots, told the Global Times that the J-20 possesses an advanced supersonic cruise ability and powerful air mobility that are technological breakthroughs for the country.
"Different from previous fighters such as the J-7 and J-8, which drew on the merits of aircrafts from other countries, the J-20 is a masterpiece of China's technological innovation," Xu said, comparing the stealth jet to the US Air Force's F-22 Raptor stealth jet and Russia's first stealth fighter, the Sukhoi T-50.
Xu said it would have been impossible for China to glean technology from the US' F-117, whose stealth technology lags far behind fourth-generation fighters and was regarded as "outdated" even at the time when it was reportedly shot down.
And as for the radiation-absorbent, exterior coating technology adopted by the F-117, Xu said it would be hard to copy that technology from the wreckage due to its complicated production process.
Developed in the 1970s and commencing service in 1983, the F-117 Nighthawk was the world's first stealth fighter - nearly invisible to radar.
In March 1999, during NATO's aerial bombing of Serbia in the Kosovo War, a Serbian anti-aircraft missile shot one of the Nighthawks down. An editorial published by the Taiwan-based China Times on Saturday said that the shooting down of the F-117 could have provided an excuse for Taiwan to reform its military.
Parts of the downed F-117 wreckage - including the left wing with the US Air Force insignia, the cockpit canopy, the ejection seat, the pilot's helmet and a radio - are exhibited at Belgrade's aviation museum, according to an AP report.
"I don't know what happened to the rest of the plane," said Zoran Milicevic, deputy director of the museum, according to the AP. "A lot of delegations visited us in the past, including the Chinese, Rus-sians and Americans ... but no one showed any interest in taking any part of the jet."
Wang Yanan, an associate editor in chief at Aerospace Knowledge magazine, told the Global Times that the F-117 could hardly have inspired the development of the J-20, due to the design differences between the two generations of fighters. He added that it is worthless to take an interest in obsolete technology for developing more state-of-art technologies.
"Despite being dubbed a stealth fighter, the F-117 functioned as a bomber because of its low speed and limited air attacking abilities, while the J-20, more resembling the F-22, is designed to have a powerful air attacking capability with a fast flying speed," Wang said.
Responding to the accusations about China's stealing of new technologies, Wang conceded that, as a forerunner for new technologies, the US can only provide a reference point for other countries but will never leak any details about the technologies, leaving many countries to develop weapons on their own or buy them from another country.
The US has, in recent years, stepped up its offensive against what it calls "Chinese tech spying." The FBI increased its agents assigned to counter alleged Chinese espionage from 150 in 2001 to more than 350 in 2007, USA Today reported.
Separately, Noshir Gowadia, an Indian-born former B-2 bomber engineer convicted of helping China design a stealth cruise missile, was due to be sentenced in court today.
Li Daguang, a Beijing-based military analyst, told the Global Times that such accusations are groundless and originate from envy and wariness of China's technological advancements.
"China not only has the freedom to develop high-end technologies but also the capability to develop them independently," he said.
Zhu Shanshan and Huang Jingjing contributed to this story
Has the Indian ex-B-2 stealth bomber engineer really sold sensitive military technology to China?
An ex-B-2 stealth bomber engineer, who sold sensitive military technology to China, has been given a 32-year jail term
AFP News-- US engineer jailed for tech sale to China
A former B-2 stealth bomber engineer, found guilty of selling sensitive military technology to China, has been given a 32-year prison sentence, a report said.
Quote:
Noshir Gowadia, 66, was convicted of five offenses in August following a trial in a federal court in Hawaii. He had been accused of passing on design information that would allow cruise missiles to avoid infra-red detection.
"We're a little disappointed (the judge) didn't give him a life sentence, that's the sentence that would've sent the best message," assistant US attorney Ken Sorenson said Monday after the sentenced was announced, reported local KHON2 news.
...
During his trial, prosecutors alleged Gowardia made repeated trips to China between 2003 and 2005 to provide defense services in the form of design, test support and test data analysis of technologies related to China's cruise missile programme.
US engineer jailed for selling secrets to China
* Source: Global Times
* [08:18 January 26 2011]
* Comments
A former B-2 stealth bomber engineer guilty of selling classified military technology to China that could help cloak missiles has been sentenced to 32 years in prison, the US Justice Department said Tuesday.
Noshir Gowadia, 66, of Hawaii, was convicted of five offenses in August following a trial in federal court on the US island state. He had been accused of passing on design information that would allow cruise missiles to avoid infrared detection.
"Mr. Gowadia provided some of our country's most sensitive weapons-related designs to the Chinese government for money. He is now being held accountable for his actions," Assistant Attorney General for National Security David Kris said in a statement.
From about 1968 to 1986, Gowadia served as an engineer with defense contractor Northrop Grumman Corporation, where he helped develop the "unique propulsion system and low observable capabilities of the B-2" bomber, the Justice Department said.
Prosecutors alleged that from 2003 to 2005 Gowadia traveled six times to China, where he helped with testing and data analysis that helped authorities in developing a stealthy cruise missile exhaust system.
At the time of his arrest in 2005 he had been paid at least $110,000 by China, the justice department said.
Gowadia was also convicted of exporting classified information about the B-2 bomber, money laundering, and filing false tax returns.
Chinese defense officials and military analysts insisted that the country's stealth fighter jet is a result of technological innovation.
AFP
J-20 stealth fighter jet 'innovative, not stolen from US plane'
* Source: Global Times
* [08:06 January 25 2011]
* Comments
By Song Shengxia
Chinese defense officials and military analysts insisted Monday that the country's J-20 stealth fighter jet is a result of technological innovation, refuting a report that alleges the aircraft was developed out of technology gleaned from a downed US fighter.
A Croatian admiral who served during the Kosovo War told the AP on Sunday that China formulated the technology for its J-20 jet from a F-117 Nighthawk stealth fighter that was shot down over Serbia in 1999.
"At the time, our intelligence reports told of Chinese agents criss-crossing the region where the F-117 disintegrated, buying up parts of the plane from local farmers," Admiral Davor Domazet-Loso was quoted as saying. "We believe the Chinese used those materials to gain an insight into secret stealth technologies."
An official at the Ministry of National Defense who declined to be named told the Global Times that "it's not the first time foreign media has smeared newly unveiled Chinese military technologies. It's meaningless to respond to such speculations."
China successfully debuted the J-20 in Chengdu, Sichuan Province, earlier this month. The test flight coincided with US Defense Secretary Robert Gates' visit to Beijing, but he was assured the timing was just a coincidence.
Following the successful test flight, speculations and assessments of Beijing's military advancement could be heard throughout the world.
Xu Yongling, one of China's top test pilots, told the Global Times that the J-20 possesses an advanced supersonic cruise ability and powerful air mobility that are technological breakthroughs for the country.
"Different from previous fighters such as the J-7 and J-8, which drew on the merits of aircrafts from other countries, the J-20 is a masterpiece of China's technological innovation," Xu said, comparing the stealth jet to the US Air Force's F-22 Raptor stealth jet and Russia's first stealth fighter, the Sukhoi T-50.
Xu said it would have been impossible for China to glean technology from the US' F-117, whose stealth technology lags far behind fourth-generation fighters and was regarded as "outdated" even at the time when it was reportedly shot down.
And as for the radiation-absorbent, exterior coating technology adopted by the F-117, Xu said it would be hard to copy that technology from the wreckage due to its complicated production process.
Developed in the 1970s and commencing service in 1983, the F-117 Nighthawk was the world's first stealth fighter - nearly invisible to radar.
In March 1999, during NATO's aerial bombing of Serbia in the Kosovo War, a Serbian anti-aircraft missile shot one of the Nighthawks down. An editorial published by the Taiwan-based China Times on Saturday said that the shooting down of the F-117 could have provided an excuse for Taiwan to reform its military.
Parts of the downed F-117 wreckage - including the left wing with the US Air Force insignia, the cockpit canopy, the ejection seat, the pilot's helmet and a radio - are exhibited at Belgrade's aviation museum, according to an AP report.
"I don't know what happened to the rest of the plane," said Zoran Milicevic, deputy director of the museum, according to the AP. "A lot of delegations visited us in the past, including the Chinese, Rus-sians and Americans ... but no one showed any interest in taking any part of the jet."
Wang Yanan, an associate editor in chief at Aerospace Knowledge magazine, told the Global Times that the F-117 could hardly have inspired the development of the J-20, due to the design differences between the two generations of fighters. He added that it is worthless to take an interest in obsolete technology for developing more state-of-art technologies.
"Despite being dubbed a stealth fighter, the F-117 functioned as a bomber because of its low speed and limited air attacking abilities, while the J-20, more resembling the F-22, is designed to have a powerful air attacking capability with a fast flying speed," Wang said.
Responding to the accusations about China's stealing of new technologies, Wang conceded that, as a forerunner for new technologies, the US can only provide a reference point for other countries but will never leak any details about the technologies, leaving many countries to develop weapons on their own or buy them from another country.
The US has, in recent years, stepped up its offensive against what it calls "Chinese tech spying." The FBI increased its agents assigned to counter alleged Chinese espionage from 150 in 2001 to more than 350 in 2007, USA Today reported.
Separately, Noshir Gowadia, an Indian-born former B-2 bomber engineer convicted of helping China design a stealth cruise missile, was due to be sentenced in court today.
Li Daguang, a Beijing-based military analyst, told the Global Times that such accusations are groundless and originate from envy and wariness of China's technological advancements.
"China not only has the freedom to develop high-end technologies but also the capability to develop them independently," he said.
Zhu Shanshan and Huang Jingjing contributed to this story
Has the Indian ex-B-2 stealth bomber engineer really sold sensitive military technology to China?
An ex-B-2 stealth bomber engineer, who sold sensitive military technology to China, has been given a 32-year jail term
AFP News-- US engineer jailed for tech sale to China
A former B-2 stealth bomber engineer, found guilty of selling sensitive military technology to China, has been given a 32-year prison sentence, a report said.
Quote:
Noshir Gowadia, 66, was convicted of five offenses in August following a trial in a federal court in Hawaii. He had been accused of passing on design information that would allow cruise missiles to avoid infra-red detection.
"We're a little disappointed (the judge) didn't give him a life sentence, that's the sentence that would've sent the best message," assistant US attorney Ken Sorenson said Monday after the sentenced was announced, reported local KHON2 news.
...
During his trial, prosecutors alleged Gowardia made repeated trips to China between 2003 and 2005 to provide defense services in the form of design, test support and test data analysis of technologies related to China's cruise missile programme.
US engineer jailed for selling secrets to China
* Source: Global Times
* [08:18 January 26 2011]
* Comments
A former B-2 stealth bomber engineer guilty of selling classified military technology to China that could help cloak missiles has been sentenced to 32 years in prison, the US Justice Department said Tuesday.
Noshir Gowadia, 66, of Hawaii, was convicted of five offenses in August following a trial in federal court on the US island state. He had been accused of passing on design information that would allow cruise missiles to avoid infrared detection.
"Mr. Gowadia provided some of our country's most sensitive weapons-related designs to the Chinese government for money. He is now being held accountable for his actions," Assistant Attorney General for National Security David Kris said in a statement.
From about 1968 to 1986, Gowadia served as an engineer with defense contractor Northrop Grumman Corporation, where he helped develop the "unique propulsion system and low observable capabilities of the B-2" bomber, the Justice Department said.
Prosecutors alleged that from 2003 to 2005 Gowadia traveled six times to China, where he helped with testing and data analysis that helped authorities in developing a stealthy cruise missile exhaust system.
At the time of his arrest in 2005 he had been paid at least $110,000 by China, the justice department said.
Gowadia was also convicted of exporting classified information about the B-2 bomber, money laundering, and filing false tax returns.
Chinese defense officials and military analysts insisted that the country's stealth fighter jet is a result of technological innovation.
AFP
BAJRANGBAL
New Member
Jan 23, 2011
B-2 Engineer Convicted of Selling Military Secrets To China
A former B-2 stealth bomber engineer convicted of selling military secrets to China is due to be sentenced in federal court on Monday.
Noshir Gowadia, 66, faces up to life in prison for his conviction on 14 counts, including conspiracy, communicating national defence information to aid a foreign nation, and violating the arms export control act.
Chief U.S. District Judge Susan Oki Mollway is due to issue her sentence after listening to arguments from the prosecution and defence. Gowadia, who has been in custody without bail since his 2005 arrest, is also expected to have an opportunity to make a statement.
A federal jury in August found Gowadia guilty after deliberating for six days. They had heard 39 days of evidence over nearly four months. The jury acquitted him on three counts.
Prosecutors said Gowadia helped China design a stealth cruise missile to get money to pay the $15,000-a-month mortgage on his multimillion dollar home overlooking the ocean in Haiku on Maui. They said he pocketed at least $110,000 from the sale of military secrets.
They said Gowadia showed his Chinese contacts how his stealth cruise missile design would be effective against U.S. air-to-air missiles.
Gowadia's defence attorneys said it's true the engineer gave China the design for a stealth cruise missile exhaust nozzle but he based his work on unclassified, publicly available information. Gowadia's son has said his father plans to appeal.
The sentencing comes just weeks after China conducted a flight test of its new J-20 stealth fighter during a visit to Beijing by U.S. Defence Secretary Robert Gates.
The Jan. 11 flight was held at an airfield in Chengdu, where prosecutors say Gowadia delivered an oral presentation on classified stealth technology in 2003.
The city is home to the Chengdu Aircraft Design Institute and is a centre for Chinese fighter aircraft and cruise missile reseach and development.
Gowadia helped design the propulsion system for the B-2 bomber when he worked at Northrop Corp., now known as Northrop Grumman Corp., between 1968 and 1986.
Born in India, he moved to the U.S. for postgraduate work in the 1960s and became a U.S. citizen about a decade later. He retired from Northrop for health reasons in 1986, two years before the B-2 made its public debut.
Gowadia moved to Maui in 1999 from the U.S. mainland where he had been doing consulting work after retiring from Northrop.
B-2 Engineer Convicted of Selling Military Secrets To China
A former B-2 stealth bomber engineer convicted of selling military secrets to China is due to be sentenced in federal court on Monday.
Noshir Gowadia, 66, faces up to life in prison for his conviction on 14 counts, including conspiracy, communicating national defence information to aid a foreign nation, and violating the arms export control act.
Chief U.S. District Judge Susan Oki Mollway is due to issue her sentence after listening to arguments from the prosecution and defence. Gowadia, who has been in custody without bail since his 2005 arrest, is also expected to have an opportunity to make a statement.
A federal jury in August found Gowadia guilty after deliberating for six days. They had heard 39 days of evidence over nearly four months. The jury acquitted him on three counts.
Prosecutors said Gowadia helped China design a stealth cruise missile to get money to pay the $15,000-a-month mortgage on his multimillion dollar home overlooking the ocean in Haiku on Maui. They said he pocketed at least $110,000 from the sale of military secrets.
They said Gowadia showed his Chinese contacts how his stealth cruise missile design would be effective against U.S. air-to-air missiles.
Gowadia's defence attorneys said it's true the engineer gave China the design for a stealth cruise missile exhaust nozzle but he based his work on unclassified, publicly available information. Gowadia's son has said his father plans to appeal.
The sentencing comes just weeks after China conducted a flight test of its new J-20 stealth fighter during a visit to Beijing by U.S. Defence Secretary Robert Gates.
The Jan. 11 flight was held at an airfield in Chengdu, where prosecutors say Gowadia delivered an oral presentation on classified stealth technology in 2003.
The city is home to the Chengdu Aircraft Design Institute and is a centre for Chinese fighter aircraft and cruise missile reseach and development.
Gowadia helped design the propulsion system for the B-2 bomber when he worked at Northrop Corp., now known as Northrop Grumman Corp., between 1968 and 1986.
Born in India, he moved to the U.S. for postgraduate work in the 1960s and became a U.S. citizen about a decade later. He retired from Northrop for health reasons in 1986, two years before the B-2 made its public debut.
Gowadia moved to Maui in 1999 from the U.S. mainland where he had been doing consulting work after retiring from Northrop.
Of course it is going to have supercruise! The relatively long body and the canard-delta configuration is designed for efficient high speed performance and manuevers.
A new video of the J-20's landing:
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