Talk:Nakajima Ki-84/Archive 1

WPMILHIST Assessment

Stub class on account of cleanup warnings; when these issues are addressed, the article can be bumped up to a higher classification. LordAmeth 10:19, 15 December 2006 (UTC)

So...

... if the submarines were causing problems with landing gear deliveries, where were they being built? I find it difficult to believe they were built offshore? Maury (talk) 03:30, 21 February 2008 (UTC)

I think that the problem was that the American blockade (submarines and mines) was stopping the supply of ores etc needed for the production of good steels. The use of metal if poor tensile strength caused the undercarriage failures.Nigel Ish (talk) 19:09, 21 February 2008 (UTC)

I'll buy that, but as it stands the text implies otherwise. Needs cleanup I guess. Maury (talk) 22:25, 21 February 2008 (UTC)

Japan is actually a chain of islands. A sub sinking a ferry with a few hundred undercarriage kits onboard would already explain the remark. A source indication would help, of course. Lastdingo (talk) 03:23, 27 June 2009 (UTC)

Methanol Water purpose

If the methanol-water injection was similar to the German one (and this is highly likely because physics are the same everywhere), the following should be nonsense: "which protected both the methanol-water tank (used to increase the effectiveness of the supercharger)" Methanol+Water did a lot in the combustion process, but the relationship with a supercharger is highly unlikely. MW injection helped to cool the combustion cylinder, to power up the combustion and thus the power output and to mitigate adverse side-effects. It was injected together with fuel for combustion and not related to a supercharger afaik. http://en.wikipedia.org/wiki/MW-50 I propose to delete "(used to increase the effectiveness of the supercharger)" entirely and without replacement unless someone gets a source for the allegation. Lastdingo (talk) 03:28, 27 June 2009 (UTC)

Pressure induction serves to increase the effective gross compression ratio of an engine, hence super/turbo charged engines typically have lower cylinder compression ratios. Consequently when high pressure forced induction systems are used & the design retains a relatively high cylinder compression ratio (in order not to loose the implied mechanic efficiencies thereof) pre-spark detonation becomes a problem. This can be alleviated by the use of higher octane fuels (which only combust at higher compression ratios) or by systems that achieve the same effect, one of which is water-methanol injection apparatus which operates by lowering the temperature of the charge. Other methods used have been "intercooling" & injecting the fuel post-compression.

So while W-M injection may not increase the effectiveness of the supercharger per se it does allow the use of a higher pressure (read: higher performance) forced induction arrangements, something of an issue of semantics. —Preceding unsigned comment added by 194.75.48.5 (talk) 16:19, 21 September 2010 (UTC)

The single stage supercharger was not enough to give it good performance above 6000 mt. Its armament was good againts fighters or light/medium bombers -> I don't think it was a big problem for the high flying formations of B-29, as said in that article.

Federico. —Preceding unsigned comment added by 141.6.11.17 (talk) 09:38, 15 February 2011 (UTC)

Assessment comment

The comment(s) below were originally left at Talk:Nakajima Ki-84/Comments, and are posted here for posterity. Following several discussions in past years, these subpages are now deprecated. The comments may be irrelevant or outdated; if so, please feel free to remove this section.

main body of article is very short with very little information. There is a long, rambling, poorly written armament section, and a somewhat superfluous section on paint schemes. M Van Houten 05:35, 14 February 2007 (UTC)

Last edited at 05:35, 14 February 2007 (UTC). Substituted at 15:25, 1 May 2016 (UTC)

Provenance of the main photo...

Hi all,

Does anyone know the provenance of this photo? The caption claims it was taken on active duty in the Phillipines, presumably during 1944/55. A quick look at the background shows what appear to be modern airliners parked facing away. Given the article also states there was a single flying aircraft with the Planes of Flame for a time would it more reasonable to assume it was taken during it's time with them?

I have modified the caption of the photo to simply ""KI-84" until further information comes to light.

If it is the planes of Fame aircraft, then the photo's licensing is incorrect, as the photo wasn't taken before 1956 in Japan. The photo really needs a source if its to be kept.Nigel Ish (talk) 23:20, 7 December 2012 (UTC)

"Camouflage and markings: Type N: The entire airframe was left in its original natural metal. ... (see photo of 73 Hiko-Sentai aircraft)." I'd like to see the photo, as suggested by the article. Where and how can I see it? "Pij" (talk) 10:39, 13 June 2013 (UTC)

Presumably it's the aircraft in this photo.Nigel Ish (talk) 21:10, 13 June 2013 (UTC)