Chinese Engine Development

latenlazy

Brigadier
So, this compressor will be part of an engine currently in development?
Not necessarily I guess. This is probably to test high-altitude engine performance on the ground instead of flying the aircraft test-bed in the future.
Pretty sure compressors like this one are meant to drive a constant airstream for wind tunnels. You need to simulate different flight conditions for ground based engine tests, which means your airstream isn’t static, and will have to change speeds based on the particular simulated speed you’re testing engine performance at.
 

taxiya

Brigadier
Registered Member
Pretty sure compressors like this one are meant to drive a constant airstream for wind tunnels. You need to simulate different flight conditions for ground based engine tests, which means your airstream isn’t static, and will have to change speeds based on the particular simulated speed you’re testing engine performance at.
But the linked article did say that one of the application is for high altitude engine test.

The super-large axial compressor unit AV140, innovatively developed by Shaanxi Blower (Group) Co., Ltd. has been successfully tested in the plant on September1st, each performance indexes of which has reached the international advanced level. The compressor unit, independently developed by Shaangu, is widely used in many industry processes such as high altitude aero-engine test station, super-large blast furnace, catalytic cracking, large air separation, pharmacy, nitric acid, sulphuric acid, long-distance gas transportation ,compression energy storage, etc.. The operation performance of the compressor has reached to the advance level in the world, with flowrate of 20,000 -25,000 m³/min and pressure ratio of 8-9. Its innovatively new high-efficiency blade profile and hollow shaft ensures the more stable and efficient operation of the overall unit.

I think the all the variable parameters can be simulated by controlling the test station, pressure, temperature and air speed.

Here is the Chinese version
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AV140是目前全球最大的轴流压缩机,轮毂直径1.4米,该系列最大风量可以达到25000m³/min,采用陕鼓全新开发的高效叶型,压缩能力强,效率高、调节范围宽;采用空心转子,减轻了转子重量,提升了转子动力特性;独特的密封结构,为压缩机稳定运行保驾护航;合理的结构优化布局设计,压缩机稳定性好、噪音低,更加节能高效、绿色环保。此次试车成功的机组将应用于我国航空发动机高空试验台位的抽气系统领域。该机组同类型大型轴流压缩机机组可在我国航空航天连续式跨声速风洞试验、冶金特大型高炉、催化裂化、大型空分、制药、硝酸、硫磺制酸、远程气体输送、压缩储能等多领域进行应用。
Another application (2nd bold texts) related to aerospace and aircraft is "continues transonic wind tunnel" meaning air speed can be adjusted.
 
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latenlazy

Brigadier
But the linked article did say that one of the application is for high altitude engine test.



I think the all the variable parameters can be simulated by controlling the test station, pressure, temperature and air speed.

Here is the Chinese version
Please, Log in or Register to view URLs content!


Another application (2nd bold texts) related to aerospace and aircraft is "continues transonic wind tunnel" meaning air speed can be adjusted.
High altitude engine testing for broader range of flight conditions requires wind tunnels that can simulate moving airstreams.
 

Quickie

Colonel
But the linked article did say that one of the application is for high altitude engine test.



I think the all the variable parameters can be simulated by controlling the test station, pressure, temperature and air speed.

Here is the Chinese version
Please, Log in or Register to view URLs content!


Another application (2nd bold texts) related to aerospace and aircraft is "continues transonic wind tunnel" meaning air speed can be adjusted.

It probably can be used to suck out the air from a low-pressure chamber to simulate the thin air in high altitudes. I suppose this is what was meant when the news report mentioned about "high altitude aero-engine test station".
 

by78

General
The
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has successfully completed testing. It will be used in the upcoming high-altitude engine test bench. It's capable of moving air at 20,000 to 25,000 cubic meters per minute and has a pressure ratio of 8 to 9, which is the highest in the world among industrial axial compressors. The unit has a total length of 11.5 meters, a width of 5.7 meters, and a height of 4.5 meters; the total weight is more than 400 tons. The core component of the hollow rotor is nearly 11 meters in length, weighs nearly 70 tons, and the inner diameter of the rotor is 1.4 meters.

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So basically, China is going for something similar to
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. It will be a critical piece of infrastructure for developing future military as well as civilian engines, especially high-bypass turbofans. Quite a few of these large axial compressors will be installed at the facility, divided among the test cells. And just like the ASTF, I'm sure it will come with an onsite supercomputer as well. A milestone development for sure.

ASTF facility from the outside:
190924-F-F3405-0001.jpeg

One of the large ASTF test cells, large enough for testing high-bypass turbofans:
190924-F-F3405-0002.jpeg
 
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taxiya

Brigadier
Registered Member
High altitude engine testing for broader range of flight conditions requires wind tunnels that can simulate moving airstreams.
I don't quite get what you are trying to say. Is there anything that can be tested for an engine in a low pressure chamber with static air stream? I mean if you can build a chamber big enough to house a full-size engine and maintain low pressure in it, that chamber is a wind tunnel, right. You just need to circulate the low pressure air in it from one side to the other while maintaining the low pressure.
 
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taxiya

Brigadier
Registered Member
It probably can be used to suck out the air from a low-pressure chamber to simulate the thin air in high altitudes. I suppose this is what was meant when the news report mentioned about "high altitude aero-engine test station".
yes, that is what it all about.
 

taxiya

Brigadier
Registered Member
I don't quite get what you are trying to say. Is there anything that can be tested for an engine in a low pressure chamber with static air stream? I mean if you can build a chamber big enough to house a full-size engine and maintain low pressure in it, that chamber is a wind tunnel, right. You just need to circulate the low pressure air in it from one side to the other while maintaining the low pressure.
@latenlazy, please ignore this, I in #5528 probably misunderstood your reply in #5527 as "this thing is not meant for high altitude test", probably a brain short-circuit in my head. :D
 
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