J-20 5th Gen Fighter Thread VIII
- Thread starter Blitzo
- Start date
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.
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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.
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.
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Kaveri has every bits of information out in the open precisely because it is a failed project. No one, not even the Indians, wants to use it.
Fantastic info, i've been looking/asking for such info on chinese engines recently.
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.
Also the f119 actually had a thrust of 162kn, it was a 35000lb"class"engine but is actually capable of producing around 37000lbs