@@SD352-68 The US had 4 different types of 5th Gen and 5.5 Gen engines for the ATF program in 1988-1990. The GE YF-120L and YF-120N motors were variable cycle engines that produced record thrust across the flight regime for a fighter. The USAF was concerned about risk the most with ATF, so chose to stick with a more conventional engine configuration with the Pratt F119-PW-100, but required the Pratt motors to match the same thrust demonstrated by the GEs while maintaining reliability. We are already flying Adaptive Cycle, 3rd-path engines in the 6th Gen PCA prototypes right now. It has been a funded program with billions already, with the engines being done concurrently/ahead of time with airframes. First flight was already officially acknowledged by DoD last year. Russia still hasn’t been able to make a motor comparable to the Improved Performance Engines of the 1980s meant to address the problems experienced by early operational turbofans in the F-111, F-14A, F-15A/B, and F-16A/B. GE took the B-1’s GE F101 motors and made fighter versions with the F110-GE-100 and GE-129, while Pratt made the F100-PW-229. The F-22A’s F119-PW-100 is a massive leap in capability over the US later 4th Gen IPEs, in that it has FADEC integrated with more advanced materials science and low parts count, with rear-aspect VLO signature in both RF and IR spectrums integrated with the airframe. The JSF F135 motors are another step up in performance and VLO technologies. The 6th Gen motors from GE and Pratt are another step up from that with ceramic composites, additive manufacturing, variable cycle, and 3rd path bypass airflow modulation. Meanwhile, other nations talk about what they’re doing or planning, and still haven’t even caught up to 1986 in the US. China is especially frustrated with their inability to conquer jet engine technology, so they have been orchestrating business acquisition schemes in attempts to purchase more of GE, including their appliance division already. They’ve been buying commercial engines for their airliners through GE/CSF France, and the DoD suspects they are using these engines for fighter engine cores with replacement initial low-pressure stages and added afterburner stages. Russia has been trying to get the Izdeliye-30 motors working for the Su-57, but has constantly failed at that, though they announce updates to when they will be ready about every year. The latest performance specs for the Su-57 indicate it is still limited to Mach 1.3 supercruise even with Izdeliye-30, though there have been conflicting statements about that and no actual flight reports (which is understandable). We didn’t see any actual numbers about the YF-22 and YF-23 performance until very recently with test pilot interviews that were finally cleared for lectures, where we learned that the PAV1 YF-22 with GE variable cycle motors achieved the fastest speed of all 4 ATF prototypes. So right now, the US is still the well-ahead and constantly improving compared with any rivals. The Su-57 and J-20B still do not meet 5th Gen standards, although the J-20 is a lot closer than the Su-57.
Cool concept. I wonder how many country working on similar engine for their next generation fighter jet.
If they're testing it then the technology basically exists.
I wonder what they've got on the drawing board for next.
@@craiga6557 probably hypersonic engine
@@SD352-68 The US had 4 different types of 5th Gen and 5.5 Gen engines for the ATF program in 1988-1990. The GE YF-120L and YF-120N motors were variable cycle engines that produced record thrust across the flight regime for a fighter. The USAF was concerned about risk the most with ATF, so chose to stick with a more conventional engine configuration with the Pratt F119-PW-100, but required the Pratt motors to match the same thrust demonstrated by the GEs while maintaining reliability.
We are already flying Adaptive Cycle, 3rd-path engines in the 6th Gen PCA prototypes right now. It has been a funded program with billions already, with the engines being done concurrently/ahead of time with airframes. First flight was already officially acknowledged by DoD last year.
Russia still hasn’t been able to make a motor comparable to the Improved Performance Engines of the 1980s meant to address the problems experienced by early operational turbofans in the F-111, F-14A, F-15A/B, and F-16A/B. GE took the B-1’s GE F101 motors and made fighter versions with the F110-GE-100 and GE-129, while Pratt made the F100-PW-229. The F-22A’s F119-PW-100 is a massive leap in capability over the US later 4th Gen IPEs, in that it has FADEC integrated with more advanced materials science and low parts count, with rear-aspect VLO signature in both RF and IR spectrums integrated with the airframe.
The JSF F135 motors are another step up in performance and VLO technologies.
The 6th Gen motors from GE and Pratt are another step up from that with ceramic composites, additive manufacturing, variable cycle, and 3rd path bypass airflow modulation.
Meanwhile, other nations talk about what they’re doing or planning, and still haven’t even caught up to 1986 in the US. China is especially frustrated with their inability to conquer jet engine technology, so they have been orchestrating business acquisition schemes in attempts to purchase more of GE, including their appliance division already. They’ve been buying commercial engines for their airliners through GE/CSF France, and the DoD suspects they are using these engines for fighter engine cores with replacement initial low-pressure stages and added afterburner stages.
Russia has been trying to get the Izdeliye-30 motors working for the Su-57, but has constantly failed at that, though they announce updates to when they will be ready about every year. The latest performance specs for the Su-57 indicate it is still limited to Mach 1.3 supercruise even with Izdeliye-30, though there have been conflicting statements about that and no actual flight reports (which is understandable). We didn’t see any actual numbers about the YF-22 and YF-23 performance until very recently with test pilot interviews that were finally cleared for lectures, where we learned that the PAV1 YF-22 with GE variable cycle motors achieved the fastest speed of all 4 ATF prototypes.
So right now, the US is still the well-ahead and constantly improving compared with any rivals. The Su-57 and J-20B still do not meet 5th Gen standards, although the J-20 is a lot closer than the Su-57.
Probably only Americans, everyone else are ages behind
@@LRRPFco52 forget the russians they will rename a good old AL31 again into a 6th generation engine and be happy with that.