Chinese Engine Development

maozedong

Banned Idiot
here is an article talk about AVIC 624 institute also develops aircraft engines,I don't know what kind the engine that the article talk about, rumors the core engine similar to F-404,
624 institut lacated in Chengdu and Mianyang, Sichuan province.

刘华清副主席关心航空发动机自主创新的点滴回忆

☆ 中航工业涡轮院 黄 利

2011 年1月14日6时,杰出的无产阶级革命家、政治家、军事家,党、国家和人民军队的卓越领导人、党的十四届中央政治局常委、中央军委原副主席刘华清同志永远地离开了我们。噩耗传来,中航工业涡轮院(624所)广大干部职工沉浸在无比悲恸之中,往事如烟,刘副主席长期关怀航空科研和装备建设的往事又浮现在人们眼前,一切都仿佛还在昨天。

从上世纪50年代后期起,我国航空发动机行业在仿制国外发动机的基础上探索自行研制发动机的途径,进行了多个型号研制。但这些新研制的发动机都经历了艰苦曲折的过程。发动机成了飞机的“心脏病”,也拖了飞机和整个航空工业发展的后腿,成为制约我军航空武器平台更新换代的“瓶颈”技术。

航空发动机的这种被动落后局面,引起了党和国家领导人的高度关注。早在上世纪60年代,敬爱的周总理就指出:我国的飞机得了“心脏病”。为了改变这种被动局面,航空动力行业的领导和专家冷静地思考造成这种局面的原因,认真分析研究国外发展航空动力的规律并吸收成功经验后,开始认识到在没有坚实的技术基础和足够的技术储备的情况下进行新发动机的研制,其过程必定是反复曲折,很难达到预想的目标。为加速实现从仿制到自行设计的转变,上世纪七十年代中后期,原第三机械工业部召开发展规划会议,与会专家强列呼吁开展新一代先进发动机预先研究,并建议列入航空工业的发展规划。

在上级的支持下,624所从1980年起,开始了高性能推进系统工程预研,这是我国航空发动机行业第一次按系统工程管理的大型预研项目,是“六五”、“七五”预研重点,技术指标与当时西方在役发动机水平相当。通过近十年的努力,624所等二十多家参研单位累计完成百余项课题,上千份研究报告,获多项国家级和部(省)级成果奖,在一批关键技术上取得突破。

在此基础上,上级领导不失时机地决定在高推预研成果的基础上全力以赴进行七级高压压气机攻关,并同时开展与七级高压压气机相匹配的带气动雾化喷嘴的短环燃烧室和全尺寸大载荷跨音速高温涡轮等高性能部件的研制。由于上级领导高瞻远瞩,高度重视,动员全行业的技术力量进行奋力攻关,全台七级高压压气机顺利进入性能试验阶段,其设计点的性能不仅达到而且超过了设计指标。这是我国自研制成功的第一台高压压气机,填补了国内设计技术的空白。该高压压气机获得国家级科技进步二等奖。随后,相继完成主燃烧室和涡轮部件设计、加工和性能试验,并且都达到设计指标。发动机三大高压部件研制取得了丰硕成果。

1987年,刘华清同志任中央军委委员、副秘书长。他负责主持制订加快空军建设发展规划和具体实施方案,强调加快国防科技和武器装备建设自主创新步伐,对一些需要尽快攻关的重大关键技术项目和久拖不决的问题果断决策,勇于负责。他经常深入国防科研一线,直接了解情况,解决问题。在1989年某重点型号工作会上,已担任中央军委副主席的刘华清同志,在听取624所预研工作汇报时果断指出,中等推力发动机研制工作应该开始论证了。

1990年,刘华清副主席在中共四川省委、成都军区等领导陪同下,来到624所视察并接见该所干部职工代表。刘副主席指出:航空发动机预研非常重要,看了你们发动机预研的成果,感到很满意,很有希望。党中央、国务院、中央军委非常关心航空工业发展问题,关心航空发动机的发展。刘副主席特别强调要缩小与发达国家的差距,时间紧迫,不能再拖、再等了!“希望同志们在现有条件下,抓紧中等推力发动机研制工作。中等推力涡扇发动机你们必须解决,五年解决不了,十年你们也一定要解决。搞航空发动机自力更生是根本,这是国策,是毛主席规定的。现在时间宝贵,航空战线上的同志们要为此而努力,要研制我们新的飞机和发动机。希望同志们上下一股劲、一条心,以无私奉献的精神把航空发动机预研搞上去,把航空工业推向一个新阶段,攀登新高峰,取得一个很好的结果”。刘华清副主席讲话结束时,他又站起来挥着手说,“中推发动机一定要靠自力更生,靠你们624所!越快越好!”

在刘华清副主席的亲切关怀和上级领导的大力支持下,624所在三大高压部件研制的同时,及时起动了核心机设计。经过全体参研单位的奋力拼搏,通力协作,发扬无私奉献精神,在前期大量预先研究的基础上,仅用三年多时间就完成了该核心机地面台和高空台达标试验,随后又完成验证机工程设计,取得航空发动机行业的重大突破,在自行研制航空发动机道路上跨出具有战略意义的一步,并对航空发动机行业的振兴发展产生巨大的推动作用和深远影响。

今天,敬爱的刘副主席虽然离开了我们,但他的崇高风范和品格,他对国防科技事业的关怀和做出的卓越贡献,将永远铭记在广大干部职工的心中,激励我们不断前进。我们可以告慰他老人家的是,今天,我国航空工业和航空发动机事业正面临蓬勃发展的大好机遇,正沿着关键技术预先研究---部件研制----核心机研制---验证机研制---型号研制—系列派生发展的航空发动机研制发展道路阔步向前。我们航空人更加坚信,在党中央、国务院、中央军委的坚强领导下,通过全行业的团结奋斗,在不远的将来,一定可以跨入世界先进水平行列,一定可以早日跻身于世界航空工业强国之林,实现几代人为之而奋斗的夙愿。
 

tphuang

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Very interesting story:

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GE highly praised the quality of GE-90 engine's parts made by Liming.

;):D
i don't see that part that you posted in the ink given at all. I'd love to read the original article of GE praising Liming. If Liming can consistently manufacture good engines, then that'd be great, but it has done pretty shoddy work most of the time.
 

latenlazy

Brigadier
I think it is an official website.

The article says GE and Liming developed a new method to manufacture the part, not to design it.

What I want to suggest is, if Liming was a bad-managed factory as some members here think, how on earth would GE allow Liming to manufacture parts for its engines?
If I'm not wrong, military and civilian grade turbofans have different manufacturing and quality control requirements.
 

ReneDad

New Member
If I'm not wrong, military and civilian grade turbofans have different manufacturing and quality control requirements.

Not to much difference. The cores of the two kind of engines are similar. I think everyone here has known that there were rumors that the core technology of Taihang came from CFM-56, a civilian turbofan, and CFM-56 shared the same core with F101 and F110, that's the powerplants of B-1B and F-16.

Usually the turbine inlet temperature of a civilian engine is lower than a military engine, so it has a longer lifespan. There isn't an afterburner and the BPR is also very different.

Exactly the civilian engine needs better quality control, because if the engine fails there are not ejection seats and parachutes available on a jumbo jet.
 

latenlazy

Brigadier
Not to much difference. The cores of the two kind of engines are similar. I think everyone here has known that there were rumors that the core technology of Taihang came from CFM-56, a civilian turbofan, and CFM-56 shared the same core with F101 and F110, that's the powerplants of B-1B and F-16.

Usually the turbine inlet temperature of a civilian engine is lower than a military engine, so it has a longer lifespan. There isn't an afterburner and the BPR is also very different.


Exactly the civilian engine needs better quality control, because if the engine fails there are not ejection seats and parachutes available on a jumbo jet.
I believe that's exactly why the quality control standards are different. Military turbofans require higher inlet temperatures, which require better material manufacturing.
 

ReneDad

New Member
i don't see that part that you posted in the ink given at all. I'd love to read the original article of GE praising Liming. If Liming can consistently manufacture good engines, then that'd be great, but it has done pretty shoddy work most of the time.

Maybe the "praise" is just some complimentary close, but the fact that Liming produced engine parts for GE can be considered as a proof that Liming isn't as worse as Chinese fanboys think.

Pratt & Whitney F100-100 encountered a lot of problem in its early days of service and there once was a time that F-15s piled in their hangars without engines. It doesn't mean that Pratt & Whitney is a trash manufacturer of aeroengines.
 

Lion

Senior Member
Probably, after WS-10 low quality production problem. CCP fired most of the top post staff of Shenyang Liming and replace with people of real calibre. Thats where GE cooperation comes in and witness the change.
 

ReneDad

New Member
I believe that's exactly why the quality control standards are different. Military turbofans require higher inlet temperatures, which require better material manufacturing.

I think it's mostly about to prevent the creep deformation of turbine blades. Theoretically if the designer chooses a higher temperature, the thrust of the engine is up but the lifespan of the blades are shorten because of the increase of creep deformation of the turbine blades.

Anyway, I didn't suggest that GE would allow Liming to make turbine blades for its engines. The US government is strictly forbidden to export such kind of technology to China. I just suggested that Liming wasn't a factory that every part of its engines had the tendency to snap and break.
 

latenlazy

Brigadier
I think it's mostly about to prevent the creep deformation of turbine blades. Theoretically if the designer chooses a higher temperature, the thrust of the engine is up but the lifespan of the blades are shorten because of the increase of creep deformation of the turbine blades.

Anyway, I didn't suggest that GE would allow Liming to make turbine blades for its engines. The US government is strictly forbidden to export such kind of technology to China. I just suggested that Liming wasn't a factory that every part of its engines had the tendency to snap and break.
I'll agree with you there, but it takes just one or two production problems to hinder an entire assembly line. I have no doubt Liming is ready to make commercial turbofans. It's the question of whether they can make reliable military grade turbofans that's the question.
 

ReneDad

New Member
Probably, after WS-10 low quality production problem. CCP fired most of the top post staff of Shenyang Liming and replace with people of real calibre. Thats where GE cooperation comes in and witness the change.

I think China has been produce parts and assemblies of planes and engines for western manufacturers like Boeing, Airbus and GE for a long time. China imports tens billions dollars of jumbo jets each year, the manufacturers of these planes and engines have to transfer or subcontract some works to their Chinese counterparts. That's the convention of international jumbo jet market.
 
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