It may be iterative, but you can’t simply slap a fan section onto an old turbojet core that was never developed to be a turbofan. The whole engine works as one integrated component. Treating components as modular when they’re not designed as such is one reason why the WS-10’s development process was such a nightmare. Mix and match isn’t a good way to do jet engine design when your downstream mechanisms have high dependency on your upstream mechanisms, unless you explicitly design such components with such flexibility in mind first.
Chinese Engine Development
- Thread starter jackbh
- Start date
A turbo jet is essentially the "core", if by core you mean the thing that generates hot gasses. By adding another turbine that is only linked to a fan, your essentially just converting that heat energy into rotational energy.
Yes, but that does not mean an engine designed to be a turbojet would take well to conversion into a turbofan. You make it sound like gas is just homogenous ether. The way your fan section impacts the gas dynamics downstream into your core is a very serious design detail that you’re glossing over.
The FWS-17 engine that was tested was made to replace the Al-222 no ?
Does anyone knows about the actual status of the WS-19 development? Has it been flight tested yet, or is it still in ground tests? or has it even been tested at all?
Are you implying that WS-19 started ground testing only months ago? Going somewhat faster than WS-15 (ground-testing in 2005?), expect WS-19 to enter service in a long, long time, i mean, if ever.
Not comparable situations. The WS-15’s engine core was first tested back in 2008. A complete prototype engine wasn’t assembled until around 2013-4. The component technologies for the WS-15 didn’t even exist at the start of the project, and it’s probable that the WS-15 underwent redesign over time as more component technologies matured. That’s why the WS-15’s development has taken so long. They weren’t just building a new engine but developing the entire technological base from scratch.
The WS-19 won’t need the time to develop a new technological base. It’s using component technology derived from the WS-15. Given that the WS-15 is already in batch production testing that will mean the WS-19’s prototyping and development testing phases should be much shorter. We got an image of the WS-19 from two years back, so technically there’s already an engine probably two years into its testing process.