隐身战机歼-20已使用国产发动机 军事学者：标志中国空军发展重大突破
来自 / 联合早报 | 文 / 于泽远 北京报道
9/28/2021
知名军事学者宋忠平对本报表示，歼-20用上国产发动机不仅意味着该机可以批量生产，批量列装部队，更标志着长期困扰中国空军发展的航空发动机问题有了重大突破。
中国军方在昨天开幕的珠海航展上大秀航空航天以及陆海作战新装备。空军发言人申进科表示，中国隐身战机歼-20已经用上了国产发动机。这也是官方首次证实歼-20用上了“中国心”。
知名军事学者宋忠平对《联合早报》表示，歼-20用上国产发动机不仅意味着该机可以批量生产，批量列装部队，更标志着长期困扰中国空军发展的航空发动机问题有了重大突破。
与此前从俄罗斯进口的发动机相比，目前歼-20所用的国产“太行”系列发动机推力更大，性能更优，能够更有效地发挥歼-20的机动性和作战能力。
他认为，歼-20只是中国空军进步的一个侧面。这次珠海航展亮点颇多，展示了中国“陆海空天电”全方位作战装备体系取得的新成就，对提升自信，震慑对手，以及推动武器出口都有助益。
两架歼-20战机昨天在珠海航展上进行了飞行表演。歼-20展示指挥员李吉宽对媒体表示，本届航展上进行飞行表演的歼20都换装了国产发动机。歼-20在表演中所采取的一系列动作，更加凸显了该机优异的低空机动性能，尤其是快速指向能力。
国产太行系列发动机比俄制发动机更有优势
从外观上看，改进版歼-20的发动机尾喷口由圆形变成了锯齿状，颜色也从亮银色变成了黑色。有军事学者指出，歼-20这项改进与美制隐身战机F-35的尾喷口类似，可以有效减少战机的各种信号特征，提升整体隐身能力，具有很强的实战价值。同时，国产太行系列发动机不仅推力更大，还采用了全权限数字化发动机控制技术，在油耗、故障率、使用寿命、大修周期方面都比以前的俄制发动机更有优势。
除歼-20外，中国空军“20系列”中的大型运输机运-20、直-20战术通用直升机，空警-500预警机、歼-16D电子战机、教-10高级教练机、轰-6K远程轰炸机、无侦-7高空无人侦察机等已列装的军机，也在航展上亮相。
但备受外界关注的隐身战略轰炸机轰-20没有在航展上现身，官方也未展出该机模型，不少中国军迷对此表示失望。
受疫情影响，原本去年举行的第13届珠海航展推迟到昨天开幕，展馆数量从上届的八个增加到了11个。在航天方面，新一代运载火箭、空间站组合体3D模型、火星车、嫦娥五号月球探测器、新一代载人飞船返回舱等纷纷亮相。在兵器展馆，武器装备实现了“陆海空天电”全覆盖，三分之一以上产品为首次参展，其中包括VT4主战坦克、VT5坦克、两栖装突击甲车、VN1型8×8轮式装甲车等一系列明星装备。
9/28/2021
China has finally showed off its most advanced fighter aircraft with domestic-made engines — a significant milestone as Beijing pushes the capabilities of its J-20 stealth jets in a bid to rival the United States’ F-22.
多个无人机装备首次亮相
无人机装备是本届珠海航展的另一大看点；其中，攻击-11、无侦-8、彩虹-6等无人机首次亮相。
攻击-11无人机具有较强的隐身能力，该机拥有两个内埋式弹舱，弹舱内可携带4枚小型制导炸弹。无侦-8高空高速无人机可对敌防护严密的战略、战役目标实施有效突防，获取敌方高分辨率目标图像，提供侦察和打击效果评估情报。彩虹-6能够执行高空侦察打击、海上反潜及巡逻警戒、远程预警探测、近距空中支援等作战任务，进一步满足未来多种作战样式需求。
多家中国军工企业还为航展带来了10多款无人战车。这些战车既有配备机关炮、反坦克导弹的大型无人作战车，也有长度不到1米只配备机枪的小型无人战车，机动方式既有轮式也有履带式，显示中国在无人战车研发领域已颇具实力。
中国空军新任司令员常丁求昨天也出席珠海航展开幕式。这是他就任空军司令员并在本月晋升上将后，首次公开亮相。
常丁求在致辞中回顾了中国空军的创建发展历程，展望空军发展远景。他说：“中国空军将以更加开放自信的姿态，向世界一流同行学习，向世界一流空军奋飞，坚决捍卫国家主权，坚决捍卫祖国统一。”
中国空军新任司令员亮相中国航展
央视网
9/28/2021
今天，第13届中国航展在广东珠海开幕，中国空军新任司令员常丁求空军上将在开幕式上致辞，这是他就任空军司令员后在社会公众面前首次公开亮相。2015年9月3日胜利日阅兵中，常丁求曾担任歼-10梯队领队长机，带领15架歼-10飞过天安门，接受党和人民检阅。
China has upgraded its best stealth fighter jet with domestic-made engines
Analysis by Brad Lendon, CNN
9/28/2021
Hong Kong (CNN) – China has finally showed off its most advanced fighter aircraft with domestic-made engines — a significant milestone as Beijing pushes the capabilities of its J-20 stealth jets in a bid to rival the United States’ F-22.
Sep 28, 2021
‘China Displays Military MIGHT at Biggest Air Show’
China put on a display of its military prowess with an air show in the skies above the city of Zhuhai.
Multiple planes from China’s air force, including a new stealth fighter jet, streaked through the air.
Crowds watched the aerobatic display unfold, as the six-day event opened after a year’s delay.
The pair of twin-engine J-20s that put on a show for crowds at Airshow China in the southern city of Zhuhai on Tuesday were equipped with the WS-10 engine. The WS-10 was developed by the People’s Liberation Army Air Force to replace Russian engines that were in early versions of the J-20.
In June, the state-run Global Times tabloid said a unit of the J-20s equipped with the domestically developed engines had been activated in the country’s northeast region, with China Central Television showing images of the planes flying in an event commemorating the 100th anniversary of the Communist Party.
But Tuesday marked the first time the homemade jets were revealed to the Chinese public and foreign onlookers.
China first flew the twin-engine J-20 in 2011, and it was introduced to the public during a flyby at the Zhuhai airshow in November 2016. It was declared combat-ready in 2018.
Long touted as China’s answer to the US F-22 — considered the world’s premier stealth fighter jet — and F-35, analysts say the J-20 is intended to fulfill two core roles: air-to-air combat and ground attack.
A 2017 report by the China Power Project at the Center for Strategic and International Studies said the WS-10 engines would give the J-20 low supercruise ability, meaning they could fly at supersonic speeds for prolonged periods.
In its June report, Global Times said the use of the domestic engines showed “the J-20 is becoming more and more technically mature.”
“More PLA units based in different locations across the country are expected to get more J-20s, significantly enhancing the PLA Air Force’s capability of safeguarding the motherland’s sovereignty, airspace and development interests,” the report said, citing an anonymous military expert.
However US officials have long said the J-20 can’t stack up to US stealth fighters.
In 2016, then-US Air Force Chief of Staff Gen. David Goldfein said the J-20’s technology was more akin to the F-117A, early stealth jets the US introduced in 1983 and had retired by 2008.
CNN’s Shawn Deng contributed to this report.
