J-20 5th Gen Fighter Thread VIII

by78

General
A few more...

54642838826_0718630393_k.jpg
54643061869_99887b137c_k.jpg

54643074078_0468bb486a_k.jpg

54642838821_85c0f78117_k.jpg

54643062024_93a954ec02_k.jpg

54643073963_86b7518486_o.jpg
 

tamsen_ikard

Senior Member
Registered Member
How good is ws-15 and ws-10c in terms of thrust to weight ratio and how does it compare with f-135 which is the most advanced right now in terms of thrust to weight.
 

ACuriousPLAFan

Brigadier
Registered Member
How good is ws-15 and ws-10c in terms of thrust to weight ratio and how does it compare with f-135 which is the most advanced right now in terms of thrust to weight.

Thrust-to-weight ratio is not exactly a meaningful metric for comparison for military engines (especially when taken alone for consideration), given how there is no single, set value for any military engine. Various factors such as how the engines are designed, which standards and guidelines are used to classify the engine components for calculations, under what conditions are the engines tested, how the heat management for the engine is done, etc. can vary wildly between countries - Meaning that the methods of calculating engine T-W ratios are different for different countries.

For example, the AL-31F has a T-W ratio of 8.127 by Russian standards, but only a T-W ratio of 6.948 by Chinese and French standards. In the meantime, the T-W ratio for the same engine would be 7.0-7.1 by American and British standards.
 
Last edited:

Nx4eu

Junior Member
Registered Member
How good is ws-15 and ws-10c in terms of thrust to weight ratio and how does it compare with f-135 which is the most advanced right now in terms of thrust to weight.
What ACuriousPLAFan is right but anyway here's some public data engine specs i've found and put them in a chart. So you won't have to be scraping the internet for data like me. If anyone wants to add some figures I'll oblige. The Yellow numbers are my speculation/backwards calculations like for example known T/W ratios given, and reverse calculations that wet thrust is generally 50% more than dry thrust. It's just something that helps me keep track of any new info.
1752045247758.png

Chinese engines really have no info/hard to find anything. The Indian kaveri on the other hand, despite being a failed engine it has all the info out there.
 
Last edited:

mack8

Junior Member
What ACuriousPLAFan is right but anyway here's some public data engine specs i've found and put them in a chart. So you won't have to be scraping the internet for data like me. If anyone wants to add some figures I'll oblige. The Yellow numbers are my speculation/backwards calculations like for example known T/W ratios given, and reverse calculations that wet thrust is generally 50% more than dry thrust. It's just something that helps me keep track of any new info.
View attachment 155874

Chinese engines really have no info/hard to find anything. The Indian kaveri on the other hand, despite being a failed engine it has all the info out there.
Fantastic info, i've been looking/asking for such info on chinese engines recently.
 

qwerty3173

Junior Member
Registered Member
What ACuriousPLAFan is right but anyway here's some public data engine specs i've found and put them in a chart. So you won't have to be scraping the internet for data like me. If anyone wants to add some figures I'll oblige. The Yellow numbers are my speculation/backwards calculations like for example known T/W ratios given, and reverse calculations that wet thrust is generally 50% more than dry thrust. It's just something that helps me keep track of any new info.
View attachment 155874

Chinese engines really have no info/hard to find anything. The Indian kaveri on the other hand, despite being a failed engine it has all the info out there.
I think you overestimated the new ws-19 and underestimated the new ws-15 in terms of thrust. More likely be around 110kn and 180kn. Also the new ws-15 most definitely has a larger bypass ratio than 0.25, more like 0.37 from what I've heard.
 

qwerty3173

Junior Member
Registered Member
What ACuriousPLAFan is right but anyway here's some public data engine specs i've found and put them in a chart. So you won't have to be scraping the internet for data like me. If anyone wants to add some figures I'll oblige. The Yellow numbers are my speculation/backwards calculations like for example known T/W ratios given, and reverse calculations that wet thrust is generally 50% more than dry thrust. It's just something that helps me keep track of any new info.
View attachment 155874

Chinese engines really have no info/hard to find anything. The Indian kaveri on the other hand, despite being a failed engine it has all the info out there.
Also the f119 actually had a thrust of 162kn, it was a 35000lb"class"engine but is actually capable of producing around 37000lbs
 
Top