Exactly, and I doubt the J-20 ever incorporates OVT for that very reason, and where I building the F-22B, I would dispense with OVT for that very reason, the F-35 proves that those aircraft are quite agile even without OVT!
Aerodynamics thread
- Thread starter siegecrossbow
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Exactly, and I doubt the J-20 ever incorporates OVT for that very reason, and where I building the F-22B, I would dispense with OVT for that very reason, the F-35 proves that those aircraft are quite agile even without OVT!
PiSigma
"the engineer"
You will lose one of the most important things in a plane - structural integrity.
vesicles
Colonel
I don’t think it’s “52km in 1 min”. “One minute” seems to be the name of a show.
What does it mean by “combat cruising”? Is it the same as super cruise?
In the 1990s, in order to speed up the development of the domestically produced J10 fighters, China began a large-scale in-depth cooperation with the salute company. At the 6th Zhuhai Air Show Press Conference on November 2, 2006, “Salute” officially announced a partnership with Shenyang Liming Aero Engine Co Ltd. to establish a joint venture in China to develop and produce new aero engines and provide services for Chinese Air Force fighters. Engine upgrade and civil feeder aircraft engine design and manufacturing technology. The AL-31FN engine produced by the Russian salute company has always been the main power system of the Chinese J10 fighter equipment. This has enabled the salute company to gradually have independent engine design and manufacturing capabilities, and has developed the AL-31F-M1 and AL-. 31F-M2 and AL-31F-M3-1, AL-31F-M3-2 (ie 99M1/M2/M3/M3-1/M3-2), and claimed that AL-31F-M3-2 rated thrust is 15 tons The thrust-to-weight ratio is above 11 (or unit thrust of 0.8-0.85), and actually has the performance of the fifth-generation engine (currently not yet finalized). Rerica-Saturn is deeply dissatisfied with the involvement of the salute company in the development of AL-31F, which it believes infringes the intellectual property rights of the original design unit, the Reli Design Bureau. The salute company changed its series of engines developed on the AL-31FN to the 99M series. Among them, 99M1 (namely AL-31F-M1) was the main driving power of the J20 stealth fighter in China during the flight test phase.
I speculate that since the “Salute ” company and the Shenyang Liming Company have cooperated closely to establish a joint venture, Shenyang Liming is likely to produce and assemble the engine components of the AL31FN.
I speculate that since the “Salute ” company and the Shenyang Liming Company have cooperated closely to establish a joint venture, Shenyang Liming is likely to produce and assemble the engine components of the AL31FN.
If the maximum 2.5M data is true, the media got the maximum speed of 2.5M, and then the reporter calculated it at a sea speed of 340m/s, and then got a figure of 52 kilometers per minute.
I find the claim of Mach 2.9 supercruise hard to believe.
To be fair, it doesn't say that the J-20 supercruised, just that it "cruised", which could just mean this was its top speed on AB, and *perhaps* during a dive. That's still a rather outlandish figure though. One possibility I've contemplated is that the 52 km/min isn't based on any actual recorded or measured data, but was reverse calculated from the top speed listed on the J-20's Baike page, which says mach 2.8 (also says this on the English Wiki page), assuming an altitude of 25,000 ft. Another possibility is that this figure was reverse calculated the way DaTang suggested assuming at sea level, with the top speed of mach 2.5 being taken from the Chinese Wiki page. Given that the former gets us almost a nice round 52 km/min ((1115*2.8)/60) while the latter gives us 51 km/min ((1225*2.5)/60), I suspect it's the former.
vesicles
Colonel
I think you got it the other way around. The speed of 2.5 Mach was estimated by the poster above based on the photo where the phrase “one minute...... combat cruise for 52 km”. My guess was that he mistakenly interpreted the photo’s message and assumed that the photo means the J-20 covered 52km in one minutes. That’s why I posted what I posted.
The way the text in that image reads though it sounds like 一分钟 isn't a separate clause at all, but a part of the rest of the sentence.