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ivell 16 hours ago [-]
This is a strange article. I did not find anything that is a blocker for China. China is a relative new comer to jet engines and this technology is tightly guarded by incumbents and needs time to mature.
If China can master nuclear, space, chips, it seems a bit stretch to say they it is the Jer engines where they fail.
dmitrygr 15 hours ago [-]
Material sciences needed for modern jet engine blades are a closely guarded secret, and thanks to not manufacturing them in china, those secrets have managed to remain not stolen.
yes, compared to the length of time ballpoint pens have existed (88 years -- since 1938), this is very recent - only 9 years ago
dzhiurgis 13 hours ago [-]
Can Chinese companies order just the blades from RR or P&W?
I've watched their manufacturing video recently and shocked how much of it was hand labour - it's not something I'd associate with precision. My partner said they must know better tho lol.
hbd-investor 7 hours ago [-]
This is nonsense
I recognized it immediately when it claimed the J-20 only supercruises at 1.3 mach
Anyone with a engineering degree understands that fighter jets carry a significant amount of fuel.
The J-20 in particular carries 26,000 lbs of fuel while the F-22 carries 18,000 lbs of fuel
Now here is where the disinformation comes in he cites the
F-22 as mach 1.8 supercruise
J-20 as mach 1.3 supercruise
But the actual numbers are
F-22 is mach 1.5 at full fuel load
F-22 is mach 1.82 only when it is nearly empty
The J-20 is mach 1.3 at full fuel load
mach 1.8 only when it is nearly empty
Choosing the J-20 number at full fuel load, and choosing the F-22 supercruise speed when it is nearly empty is deliberate disinformation.
If China can master nuclear, space, chips, it seems a bit stretch to say they it is the Jer engines where they fail.
Fun story: it is not just jet engines - it is only recently that china was able to actually make indigenous ballpoint pens https://www.bbc.com/news/business-38566114
I've watched their manufacturing video recently and shocked how much of it was hand labour - it's not something I'd associate with precision. My partner said they must know better tho lol.
I recognized it immediately when it claimed the J-20 only supercruises at 1.3 mach
Anyone with a engineering degree understands that fighter jets carry a significant amount of fuel.
The J-20 in particular carries 26,000 lbs of fuel while the F-22 carries 18,000 lbs of fuel
Now here is where the disinformation comes in he cites the
F-22 as mach 1.8 supercruise J-20 as mach 1.3 supercruise
But the actual numbers are
F-22 is mach 1.5 at full fuel load
F-22 is mach 1.82 only when it is nearly empty
The J-20 is mach 1.3 at full fuel load
mach 1.8 only when it is nearly empty
Choosing the J-20 number at full fuel load, and choosing the F-22 supercruise speed when it is nearly empty is deliberate disinformation.
Your substack has lost all credibility.