Recent content by greybeard

Göring-Mischung

It seems that the 9./JG3 was also equipped with F-4/Zs in June 1942. In a Russian book, then, the I./JG53 and the 5./JG1 are mentioned in this regard, but I don't know the language.

I'm trying to understand what the operational use of this model was. Unfortunately, the data I have managed to collect is fragmentary; appears to have been employed in North Africa by JG27 and JG53 but I lack details on which groups and in what time period. I hope someone can help me.

Sorry guys, I think there is a gigantic misunderstanding: I see we slipped from a simple question of mine to rocket science. Probably my fault since English is not my native language. So far I believe first answer by Engineman is clear enough for me: unit of measure of aviation oil viscosity is...

Frankly, so far I'm a bit confused :confused:. Mainly because I miss a criterion for aeronautical oil. On Wikipedia, I read that there's a standard for automotive, the SAE J300. According to it the 10W/40 equals a centipoise viscosity of 7000 at -25°C and between 12.5 and 16.3 centistokes at...

When I frequented the local flying club many years ago, I heard technicians say that they used "100 viscosity" lubricating oil for the piston engines of small touring planes. At the time, common car engine oils had grades of 10W/40 or so. I've always wondered why airplanes needed such high...

Thanks for your reply. Fascinating matter; although propelling an aircraft is undoubtedly more exciting, I thing to stop it is also important.

When were wheel brakes introduced in aviation? How were they made and how did they work? I have fragmentary data on the subject: an old print of the P-39 Airacobra where it talks about "Hydraulic Multi-Disc Brakes", a detail of the undercarriage of the Bf 109 showing a drum brake, I saw the...

Please don't repeat the same assumption based discussion here from the previously linked thread!🙏 Let's do this: let's take the curves of the famous diagram as valid, and therefore with the Spitfire which almost equals the Fw 190 in roll speed. My initial question remains to be proved...

Of course, assuming the subject of this thread is true. But even if it isn't, there are still important structural differences (which I mentioned) in favor of the 190.

Thank you! That was exactly the information I was looking for!👍 Do you happen to also have some diagrams showing the relationship between stick movement and aileron movement (or other control surfaces...). Sorry, I don't understand how this is possible (and with what effect on aircraft control...).

Done! Thank you!:)

it's hard to believe that the Spitfire stands so far above its contemporaries just for the removal of the wing tips... Moreover, everything else that the Fw 190 had to justify the performance would be missing (rigid rather than wired control system, etc.).:confused:

Thanks, but I can't find anything I said in the link. Just an interminable discussion about wing spars where no one really knows why the Fw 190 had such a high roll rate, just guessing. I find it a pity that this information has been lost, or rather that it has not been disseminated in the...

I remember very well that the exceptional roll speed was explained by the fact that the transmission ratio between stick and ailerons varied with the speed of the aircraft: maximum movement at minimum speed and minimum movement at maximum speed (for the same joystick excursion, the which reduced...