TR Propulsion Systems

[Ripley]

There is an alternative kara akya is loading……..

What?

Wrong thread, maybe

 

[Yasar_TR]

since they specifically utter "early tests" for 2026, I assume it won't be a fully built engine but some modular tests to validate their assumptions before committing to a prototype.

If you are talking about parts Q/C tests, that is an issue that they should be doing now. They have come to a stage where they are ready to build a prototype. In virtual world and in computer drawings they have an engine with each part to be produced already specified to the quality level they demand off of it.
Early test of an engine has to be a test on a complete engine.
Say they are aiming for the engine’s fan to rotate at 4000 to 5000rpm and LP spool to spin at 12000 to 15000rpm and HP spool to spin more than 20000rpm; they would first run it at very low rpm levels and check the performance and wear and tear on parts. Accordingly new parts replace sub par units. When the engine is responding within a given tolerance level then the so called first ignition is made. That is when the engine is pushed to its optimum available rpm. At least that is my understanding.
I can’t imagine any other way an early test can be done on an engine. The engine has to work as a whole to be tested. You can’t test individual parts of a turbofan if the engine is not working.

 

[hugh]

If you are talking about parts Q/C tests, that is an issue that they should be doing now. They have come to a stage where they are ready to build a prototype. In virtual world and in computer drawings they have an engine with each part to be produced already specified to the quality level they demand off of it.
Early test of an engine has to be a test on a complete engine.
Say they are aiming for the engine’s fan to rotate at 4000 to 5000rpm and LP spool to spin at 12000 to 15000rpm and HP spool to spin more than 20000rpm; they would first run it at very low rpm levels and check the performance and wear and tear on parts. Accordingly new parts replace sub par units. When the engine is responding within a given tolerance level then the so called first ignition is made. That is when the engine is pushed to its optimum available rpm. At least that is my understanding.
I can’t imagine any other way an early test can be done on an engine. The engine has to work as a whole to be tested. You can’t test individual parts of a turbofan if the engine is not working.

i am speaking of component level testing of different subassemblies. there could be specialized testing equipment and rigs to get data from these modules without building a complete engine.

but this is a topic i'm not really well versed. Maybe @Nilgiri can weigh in?

 

[Zafer]

Starter system, fuel delivery system, electric power generating system, lubrication system are the main subsystems that can be independently tested without igniting
the engine.

 

[Nilgiri]

S

i am speaking of component level testing of different subassemblies. there could be specialized testing equipment and rigs to get data from these modules without building a complete engine.

but this is a topic i'm not really well versed. Maybe @Nilgiri can weigh in?

Some examples

Aviation Technology Directorate

JAXA Aviation Technology Directorate helps to create a safer and more prosperous society with aeronautics-related research and development activities.

www.aero.jaxa.jp