SamuraiBlue
Captain
Basically the same principle as a CPU cooler blowing wind to keep the temperature down, but there is still a limit in how much they can lower the temperature.
Chinese Engine Development
- Thread starter jackbh
- Start date
Basically the same principle as a CPU cooler blowing wind to keep the temperature down, but there is still a limit in how much they can lower the temperature.
Exactly, and the same principal as an astronaut operating in extreme heat and cold in space, but the internal cooling/heating of his suit, keeps the 98.6 degree astronaut cool/warm. These parts are extremely tight in tolerance and temperature range, it all has to work together, why when you are buying a turbine/jet aircraft, one of the selling/buying points is time since a "hotsection" where the internals of the "hot section" are inspected/tested or replaced if out of "tolerances".
专家：中美发动机差距不到10年 太行推力接近117s
2014年11月14日 12:52
来源：羊城晚报
记者：林丹
太行发动机真行了？站在太行涡扇10旁的老董很肯定地点头：行了！
太行涡扇10发动机是中国航空研究院606所的产品，老董是606所的参展人员，这几天他天天站在展馆，给感兴趣的专业和非专业人士答疑解惑。老董说，他从南京航空航天大学一毕业就参与了涡扇10的研制。
涡扇10从1978年预研，1987年立项。老董说，它现在已经大批量地装上了歼10b、歼11b和运20大型运输机。
网上一些文章透露，太行发动机的外涵盒子，用上了复合材料，既大减了重量，又提高了强度，也提高了耐高温能力。老董先生带记者到太行发动机的侧面，指着发动机外表那片黑色说：“这是我们所独有的特色，以前这里是用钢材，也有用钛合金，现在用复合材料就轻多了，还耐高温，高强度。”
老董说太行涡扇10发动机的推重比在8左右（发动机的推重比是指发动机的推力和发动机重量（重力）的比值），一般的三代机的发动机，都在8左右。他还透露，现在几个研究所正在联合研制的四代战斗机的发动机，在网上称为涡扇15，那款发动机具备隐身性能。
歼10b作为一个轻型战斗机能够载重近8吨的武器，机动性能非常优秀，这得益于它已经有了一颗强大的中国“心脏”。
记者：12000kgf-14000kgf有什么含义？
老董：这是说明太行发展了很多种机型，我们最好的发动机已经达到14000公斤的推力。（苏35的发动机推力为14500公斤）
记者：达到这样的推力，就是说太行发动机与苏35的发动机推力大致相当了？
老董：是的，而且我们还在向前发展，这几年一直在完善和发展。这是最新的涡扇10发动机，已经定型了。
记者：它已经量产了吗？
老董：已经大批量装上歼10b、歼11b和运20。
记者：为什么歼10，比如八一飞行表演队的歼10用的还是俄罗斯的发动机呢？
老董：中国购买了那么多俄罗斯的发动机，还有已经装上的俄罗斯发动机还没到寿命，当然还要用呵。
记者：涡扇10在发动机寿命和稳定性方面与俄罗斯、美国三代机上的发动机比怎么样？
老董：这方面我们差一些，也可以说有较大的发展空间，比如说有些材料在科研单位的数据是不错的，但在实际应用时，还是不尽如人意，这就是研究航空发动机的难处，一个发动机要在相当长的时间内逐步完善它的稳定性，就算是美国也要十来年，而且还不算他们的预研阶段。
记者：网上有人质疑中国发动机不行，说太行发动机只有300小时的寿命，这是否属实？
老董：这个错大了，我们太行的寿命是1500小时，按照设计要求，300小时是定期维护。
记者：我们的发动机与美国的差距有没有10年？
老董：不到10年。
2014年11月14日 12:52
来源：羊城晚报
记者：林丹
太行发动机真行了？站在太行涡扇10旁的老董很肯定地点头：行了！
太行涡扇10发动机是中国航空研究院606所的产品，老董是606所的参展人员，这几天他天天站在展馆，给感兴趣的专业和非专业人士答疑解惑。老董说，他从南京航空航天大学一毕业就参与了涡扇10的研制。
涡扇10从1978年预研，1987年立项。老董说，它现在已经大批量地装上了歼10b、歼11b和运20大型运输机。
网上一些文章透露，太行发动机的外涵盒子，用上了复合材料，既大减了重量，又提高了强度，也提高了耐高温能力。老董先生带记者到太行发动机的侧面，指着发动机外表那片黑色说：“这是我们所独有的特色，以前这里是用钢材，也有用钛合金，现在用复合材料就轻多了，还耐高温，高强度。”
老董说太行涡扇10发动机的推重比在8左右（发动机的推重比是指发动机的推力和发动机重量（重力）的比值），一般的三代机的发动机，都在8左右。他还透露，现在几个研究所正在联合研制的四代战斗机的发动机，在网上称为涡扇15，那款发动机具备隐身性能。
歼10b作为一个轻型战斗机能够载重近8吨的武器，机动性能非常优秀，这得益于它已经有了一颗强大的中国“心脏”。
记者：12000kgf-14000kgf有什么含义？
老董：这是说明太行发展了很多种机型，我们最好的发动机已经达到14000公斤的推力。（苏35的发动机推力为14500公斤）
记者：达到这样的推力，就是说太行发动机与苏35的发动机推力大致相当了？
老董：是的，而且我们还在向前发展，这几年一直在完善和发展。这是最新的涡扇10发动机，已经定型了。
记者：它已经量产了吗？
老董：已经大批量装上歼10b、歼11b和运20。
记者：为什么歼10，比如八一飞行表演队的歼10用的还是俄罗斯的发动机呢？
老董：中国购买了那么多俄罗斯的发动机，还有已经装上的俄罗斯发动机还没到寿命，当然还要用呵。
记者：涡扇10在发动机寿命和稳定性方面与俄罗斯、美国三代机上的发动机比怎么样？
老董：这方面我们差一些，也可以说有较大的发展空间，比如说有些材料在科研单位的数据是不错的，但在实际应用时，还是不尽如人意，这就是研究航空发动机的难处，一个发动机要在相当长的时间内逐步完善它的稳定性，就算是美国也要十来年，而且还不算他们的预研阶段。
记者：网上有人质疑中国发动机不行，说太行发动机只有300小时的寿命，这是否属实？
老董：这个错大了，我们太行的寿命是1500小时，按照设计要求，300小时是定期维护。
记者：我们的发动机与美国的差距有没有10年？
老董：不到10年。
English translation please
This is an interview with a member of the 606th Institute - responsible for development of Taihang family - who is present at the Zhuhai Airshow.
Some aspects of the Taihang confirmed by this person are:
1. Thrust to weight ratio of latest versions of Taihang are ~8, which is on par with other 4th gen fighter engines.
2. These versions of the Taihang produce ~14,000kgf, not far off from the 117S' 14,500kgf.
3. They are in production and will/is equip/ing J-10Bs, J-11Bs and Y-20s.
4. Service life is somewhat inferior to US and Russian engines at ~1500 hours.
5. Technological gap between Chinese and US engines is <10 years.
He also mentioned that J-10s are still equipped with Russian engines because China had bought so many Al-31FNs and the ones installed on older J-10s still haven't reached the end of their service life so of course they will continue using Al-31FNs.
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shen
Senior Member
summary of the Chinese article.
Interview of representative from 606 Institute.
WS-10 is China's third generation engine. WS-15 talked about on the internet is China's fourth generation engine, under development by several institutes, has stealth capability.
Various models of WS-10 have thrust between 12000kgf-14000kgf
WS-10 will be used on J-10B after Russian engines in stock are used up.
WS-10 still lags behind Russian and American third generation engines in lifespan, 1500hrs total life, 300hrs between scheduled maintenance.
China less than 10 years behind American engine technology.
Interview of representative from 606 Institute.
WS-10 is China's third generation engine. WS-15 talked about on the internet is China's fourth generation engine, under development by several institutes, has stealth capability.
Various models of WS-10 have thrust between 12000kgf-14000kgf
WS-10 will be used on J-10B after Russian engines in stock are used up.
WS-10 still lags behind Russian and American third generation engines in lifespan, 1500hrs total life, 300hrs between scheduled maintenance.
China less than 10 years behind American engine technology.
How credible is the news that WS-10 is in production?
shen
Senior Member
check out the J-11B pictures on this forum.
J-11Bs have been flying with them for years. I don't see how it's still questionable as to whether or not Taihangs are in production.
by78
General
Background: this is apparently a conversation between a journalist and an engineer on the team that designed the WS-10 turbofan.
A summary of the conversation:
1) WS-10's T:W ratio is around 8:1.
2) WS-10 engine problems have been solved and production has stabilized. The engine and its derivatives are being propagated to J-10B, J-11B and Y-20.
3) WS-10 continues to be further developed. It already has several variants, with thrust ranging from 12000kgf to 14000kgf. The engine for the SU-35 is around 14500kgf.
4) Russian engines will continued to be used for a while longer not because WS-10 is immature but because China has a lot of Russian engines in stock.
5) WS-10's service life and reliability are still behind its American counterparts. The material science and design are not the problem. The problem lies with production. It will take China ten years or maybe less to reach parity with America in terms service life and reliability.
6) WS-10's service life is around 1500 hours, with 'scheduled maintenance" interval being 300 hours.
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Misc. thoughts from me:
I'm not certain if 'scheduled maintenance' interval translates as MTBO. Maybe someone with better Chinese can help out on this.
I find one part of the interview puzzling: "他还透露，现在几个研究所正在联合研制的四代战斗机的发动机，在网上 称为涡扇15，那款发动机具备隐身性能。" Basically it says that next generation engine (WS-15) is under development and will have 'stealth features' or 'be stealthy'. What exactly is a stealthy engine, I wonder? It's either the interviewer was out of his depth and didn't understand the answer or the interview itself is of suspect provenance.
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