Recent content by kool kitty89

On the note of BMEP, it's significant that the Fiat A.30 used a proprietary ethanol blend for its fuel. (nominally 55% gasoline, 23% ethanol and 22% benzol; the latter should be a mixture of mostly benzene, toluene, and xylenes) Ethanol/gasoline fuel blends in the range of 20-40% ethanol can...

If this hasn't already shown up elsewhere on the forums in the last few years, here's also this more comprehensive (and tabulated) NACA report on the XP-42 tests here: https://ntrs.nasa.gov/api/citations/19930091850/downloads/19930091850.pdf Also an archived link for that XP-42 picture (since...

stoxm73 started the thread by suggesting the 11.35 mm Madsden cartridge was short enough to potentially adapt to a rifle caliber machine gun, which would be more the point of such a cartridge as it's a very small and light "heavy" machine gun cartridge, much less powerful than the .50 Vickers...

As others have mentioned, using a back to back, dual cam disc, 2-row configuration as America, many Japanese, and Fiat's 2-row radial engines used, but retaining Bristol's 4-valve per cylinder system of the Jupiter, Mercury, and Pegasus, sould've been the way to go if Bristol had stuck to popper...

I had the impression it was "benzol" being used as fuel component (or straight as fuel) rather than pure benzene, though I think "Benzol" itself was a British brand and "Benzene" may have also been a generic term for a mix of liquid aromatic hydrocarbons. Those types of mixes were typically a...

It's worth noting that the acute toxicity of TEL was its best understood aspect, as was acute lead poisoning (and acute heavy metal poisoning in general, as with mercury). It's the chronic, low level lead exposure that was more poorly understood and being investigated and contended at the time...

The USAF "Reciprocating Engine Characteristics" chart lists the -45 as 1515 lbs, but your source may be more accurate (in any case that's little more than the Merlin 20 series single stage 2-speed drive or Packard V-1650-1 at 1520 lbs). If the earlier simple friction clutch was lighter that...

On the issue of the V-1710-45 (and many or possibly all auxiliary supercharger installations on the V-1710), it appears that the aux stage used a fluid coupling, like an automatic transmission's toque converter, similar to the DB-601/605/603 and some R-2800 aux stages (and the single stage one...

This is something I've thought of several times: take the Gladiator fuselage largely unchanged, possibly strengthening the tail unit (to delete the bracing wires), and use an updated cowling and variable-pitch propeller like the F.5/34 used. This would be particularly good if Gloster stuck to...

I also stumbled on this further development of the HeS 011 as well as a much larger and more advanced axial turbojet design developed for Spanish and Egyptian contracts in the early 1950s. https://forum.warthunder.com/index.php?/topic/435235-heinkel-he-012-supersonic-lightweight-jet/ Paneles...

Some of the later variants of the HeS 8 added a single axial stage behind the centrifugal stage and should indeed have somewhat resembled the HeS 11 to some extent, but smaller, with a conventional centrifugal compressor (not diagonal) with a smaller axial "inducer" fan stage ahead of it at the...

It was mentioned in a few discussions some years ago that one of the reasons water-methanol injection took so long to be fully tested and approved for use (either in American or German aircraft applications) and initially saw only limited, restricted use as with boosted take-off power in the...

Most sources I've seen list the HeS 8 as being designed for a 700 kp thrust, but delivering an initial 500 kp by the time it was used for the He 280's first powered flight (and then rushed with fuel leaks still present in order to meet Udet's deadline), and increased to 550 kp later in 1941, but...

I believe that book is also where the fuel consumption figures come from that Wikipedia had cited some years ago, and Japanese Wikipedia also cites, though the latter lists it as 2.16 lb/lbf/hr for the HeS 3 and 1.6 lb/lbf/hr for the HeS 6, while the former English Wikipedia listing cited the...

OK so I took a look in my copy of "Hans Von Ohain: Elegance In Flight" and on page 263, it has a cut-away diagram of the HeS3b as part of the display reconstructions made for the Smithsonian and Deutsches Museum of Munich, and the following figures are included: diameters housing: 41.5 in...