Chinese Hypersonic Developments (HGVs/HCMs)
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Jiang Zonglin, from Chinese academy of science give some important information about JF-22 wind tunnel -
Jiang Zonglin, a researcher at the Institute of Mechanics of the Chinese Academy of Sciences and head of the Huairou Shock Tunnel Project: The first scale is large. The flow field blown out by our wind tunnel has a diameter of 2.5 meters. Generally, the maximum diameter abroad is 1.5 meters. In this way, you can put a larger aircraft. The second is longer. At Mach 10, we reached 40 milliseconds, which is about several times higher than the domestic and international advanced level of the same kind, and the accuracy of the experimental results is also high. The third one has high total temperature, high total pressure and high performance. Now it can reach 2,500 degrees Celsius to 18,000 degrees Celsius, and in terms of total pressure, we can achieve 100 atmospheres until 10,000 atmospheres. So this performance is comparable to no other wind tunnel in the world.
Han Guilai, a researcher at the Institute of Mechanics of the Chinese Academy of Sciences and the site leader of the Huairou Shock Wave Wind Tunnel: We are currently studying an aircraft with two or more stages into orbit. The rocket takes off and lands vertically. In the future, we will use the aircraft to take off and land horizontally, and then Fly to an altitude of, say, 30 kilometers to 40 kilometers, release the second stage, and then fly upwards to form such a relay mode, which is called two-stage or multi-stage orbit entry, so we are also preparing for such a corresponding one recently. The experiment of the separation scheme is mainly to explore the separation process between the lower level and the upper level.
The JF-12 reproduction wind tunnel and the JF-22 ultra-high-speed wind tunnel can realize the experimental conditions of 1.5-3km per second and 3-10km per second respectively, and together constitute an aerodynamic experiment covering Mach number 5-25 and flight altitude 25-90km platform.
Jiang Zonglin: With a Mach number of 10, say more than 100 atmospheres, and an experiment time of 40 milliseconds, we can conduct hypersonic engine tests. Our laboratory proposes a new type of engine called a stationary oblique detonation engine. Now we have achieved Mach number 7 to Mach number 9 with JF-12. Now it seems that our new engine has higher thermal efficiency than the traditional engine, which is 50% higher, and the combustion is stable. JF-22 is going to go from Mach 9 to Mach 16. If such an engine is completed, I think it will be a great impetus to our country's next step in aerospace technology.
In addition, the scientific research team will use this shock wave wind tunnel experimental platform to carry out research on gliding aircraft, space-to-earth shuttle aircraft, and multi-stage orbiting aircraft to support and serve the country's major needs in the field of hypersonic technology and key technological breakthroughs.
Jiang Zonglin: At the level of Mach 20, we can make high-altitude gliding aircraft, which can be said to reach the world in an hour. If we achieve a Mach number of 30, we will actually use such a Mach number when the aircraft re-enters the atmosphere. Therefore, this wind tunnel covers the entire range from aerospace to aviation to detectors, so it has a wide range of applications.
Link -
Jiang Zonglin, a researcher at the Institute of Mechanics of the Chinese Academy of Sciences and head of the Huairou Shock Tunnel Project: The first scale is large. The flow field blown out by our wind tunnel has a diameter of 2.5 meters. Generally, the maximum diameter abroad is 1.5 meters. In this way, you can put a larger aircraft. The second is longer. At Mach 10, we reached 40 milliseconds, which is about several times higher than the domestic and international advanced level of the same kind, and the accuracy of the experimental results is also high. The third one has high total temperature, high total pressure and high performance. Now it can reach 2,500 degrees Celsius to 18,000 degrees Celsius, and in terms of total pressure, we can achieve 100 atmospheres until 10,000 atmospheres. So this performance is comparable to no other wind tunnel in the world.
Han Guilai, a researcher at the Institute of Mechanics of the Chinese Academy of Sciences and the site leader of the Huairou Shock Wave Wind Tunnel: We are currently studying an aircraft with two or more stages into orbit. The rocket takes off and lands vertically. In the future, we will use the aircraft to take off and land horizontally, and then Fly to an altitude of, say, 30 kilometers to 40 kilometers, release the second stage, and then fly upwards to form such a relay mode, which is called two-stage or multi-stage orbit entry, so we are also preparing for such a corresponding one recently. The experiment of the separation scheme is mainly to explore the separation process between the lower level and the upper level.
The JF-12 reproduction wind tunnel and the JF-22 ultra-high-speed wind tunnel can realize the experimental conditions of 1.5-3km per second and 3-10km per second respectively, and together constitute an aerodynamic experiment covering Mach number 5-25 and flight altitude 25-90km platform.
Jiang Zonglin: With a Mach number of 10, say more than 100 atmospheres, and an experiment time of 40 milliseconds, we can conduct hypersonic engine tests. Our laboratory proposes a new type of engine called a stationary oblique detonation engine. Now we have achieved Mach number 7 to Mach number 9 with JF-12. Now it seems that our new engine has higher thermal efficiency than the traditional engine, which is 50% higher, and the combustion is stable. JF-22 is going to go from Mach 9 to Mach 16. If such an engine is completed, I think it will be a great impetus to our country's next step in aerospace technology.
In addition, the scientific research team will use this shock wave wind tunnel experimental platform to carry out research on gliding aircraft, space-to-earth shuttle aircraft, and multi-stage orbiting aircraft to support and serve the country's major needs in the field of hypersonic technology and key technological breakthroughs.
Jiang Zonglin: At the level of Mach 20, we can make high-altitude gliding aircraft, which can be said to reach the world in an hour. If we achieve a Mach number of 30, we will actually use such a Mach number when the aircraft re-enters the atmosphere. Therefore, this wind tunnel covers the entire range from aerospace to aviation to detectors, so it has a wide range of applications.
Link -
There are - 151 comments and growing.
Off topic: See how they can't wait to spread this lol
They cannot accept the fact that China is building warships of equal or even better quality faster and cheaper.
"Building faster and cheaper, so they must be worse products."
It's another stupid meme like the Fujian's cracks. It's not worth anyone's time to discuss here, especially not from the trash that comment on the Drive. And it's OT.
They want to discuss damage control, they can look at
Cant bother to listen to the entire broadcast ( I still have some homework lol) so can anybody confirm/counter this?
I'm surprised he didn't mention the conspicuous lack of tanker collision countermeasures, emergency fentanyl dispensaries and "Safe Space™" compartments
A two-stage HGV test back in April, probably DF-27. The flight is notional only because I sucked on drawing.
But it is different from the confirmed DF-27 test back in Feb:
1. It was launched from Jilantai where usually fields operational missile.
2. It has three impact zones and the DF-27 had only two drop zone in the previous test.
3. It demonstrated the maneuverability of its warhead/third stage, and went straight head down to the ICBM impact zone.
4. The test came right after the DF-27 was leaked to the public, could it be for demonstration purpose for someone concerned to see it?
But it is different from the confirmed DF-27 test back in Feb:
1. It was launched from Jilantai where usually fields operational missile.
2. It has three impact zones and the DF-27 had only two drop zone in the previous test.
3. It demonstrated the maneuverability of its warhead/third stage, and went straight head down to the ICBM impact zone.
4. The test came right after the DF-27 was leaked to the public, could it be for demonstration purpose for someone concerned to see it?