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The point I will make is this:This is what author says:
By mating two V-12 Merlin equivalents belly-to-belly around a common crankshaft, [37] . . .
This is what footnote [37] says:
37
In fact, the Vulture was based on the earlier Rolls-Royce V-12 Kestrel engine, but with the blocks re-
bored to yield the same cylinder diameter as the Merlin; Victor Bingham, Major Piston Aero Engines of World
War II (Shrewsbury, England: Airlife Publishing, Ltd., 1998), 134-35.
( wrong - bore of Merlin was 5.4 in, bore of Vulture was 5 in - pg. 200 of 'British piston aero-engines' by Lumsden for Vulture)
Then, about mid-war Zero vs. Spitfire IX:
41
The empty weight of the A6M2 Zero was less than 4,000 pounds to 6,500 pounds for the Spitfire IX,
the most capable version of the Spitfire in operational service in 1943. Both were powered by engines of
about 1,300 horsepower. See Pierre Closterman, Flames in the Sky (London: Chatto and Windus, 1956), 49-
58, for a clinical evaluation by a top-scoring Allied World War II ace of the reasons for the Zero's
effectiveness.
So not true.
A6M2 Zero have had barely more than 1000 HP (easily verifiable from host of wartime data found on this site or at wwiiaircraftperformance.org), the SPitfire IX in 1943 have had 1580 HP for the 1942-vintage Merlin 61 (1700 HP for 1943-vintage 2-stage Merlins). Such merlins will do twice the power of Zero's engines at 25000 ft, not just because they sported the 2-stage supercharger - another fact that somehow was not mentioned in Spitfire article in the essay.
The most powerful engine on in-service Zeros were still under 1200 HP.
We have a thing where sources are wrong, and author made it worse by expanding on it. I'm not sure that books written in 1950s are useful anymore as sources, nor that Pierre Clostermann is enough well regarded as a source for cold facts about technical matters.
Let's recall the myth of Japanese carriers' flight decks being choke-full with aircraft (50+ years passed until that myth was busted), that was bought hook-line-and-sinker by Western authors without cross-checking that with US sources 1st. Or many other myths - no supercharger on V-1710 (that got also repeated on 'Decisive weapons' P-51 episode 30 years ago), or that XP-39 went 390-400 miles, or that P-39 was a good attack aircraft etc (we have whole threads devoted to myths in aviation), or that Bf 109G was so clunky that it went just 380 mph.
I don't hold any author above scrutiny, and in case this essay scrutiny is necessary.
No, I'm not commenting roman numerals, but the stuff that is factually wrong.
Well said, Tomo.N NevadaK - I certainly appreciate your assessment posted above.
We, or at least I, are becoming spoiled with abundance of data just a few keystrokes away, and rarely remember the times when we were eagerly waiting for a new issue of the favorite magazine, or a visit to the library, and believing what was written as a gospel.
Actually, the internet was devised as a means of exchange of information and was used as such prior to becoming readily available to the public in the 90's.
Granted, dialing your destination server's phone number and then placing the handset into the Hays 300bps modem was tedious as was searching through files with a Gopher browser on a 286 computer.
But the information was out there and available.
Before the internet, there was ARPAnet and you could access any .EDU archive and publication that had been published. You also access archives via peer to peer.It is true that the internet had been created for information sharing, but we should recognize what the internet was in the late 90's. For starters, less than 5% of the world population accessed the internet and the amount of data available was quite minuscule when compared to today's multiple exaflops of data. For reference something like 75% of the world's population accesses the internet today. More pertinent to this conversation, online access to books and archives was almost non-existent. Large scale scanning of documents and the creation of digital libraries doesn't really begin until the mid to late 2000's especially when the PDF format was released into public domain.
The information may have been out there, but it was not available.
Let's recall the myth of Japanese carriers' flight decks being choke-full with aircraft (50+ years passed until that myth was busted), that was bought hook-line-and-sinker by Western authors without cross-checking that with US sources 1st.
The empty weight of the A6M2 Zero was less than 4,000 pounds to 6,500 pounds for the Spitfire IX,
the most capable version of the Spitfire in operational service in 1943. Both were powered by engines of
about 1,300 horsepower. See Pierre Closterman, Flames in the Sky (London: Chatto and Windus, 1956), 49-
58, for a clinical evaluation by a top-scoring Allied World War II ace of the reasons for the Zero's
effectiveness.
Hi, newly registered here...
Surely 6,500 pounds is not the empty weight for a IX - that sounds more the max. loaded weight? Empty weight for Spitfire IX should be around 5,000 pounds?
I've quoted the footnote from the essay we're discussing here. IOW - not my numbers.
But at any rate, the 'tare weight' (?; = no guns, radios, armor?) for the Mk.IX seem to be ~5750 lbs; 'empty weight (= no fuel, ammo, pilot) around 6500 lbs?
data sheet
My biggest complaint with the Harmon article is the omission of the F6F Hellcat.
Really? The Hellcat was a good fighter but its strategic impact was nil. Tactically, sure, it really helped. But no Hellcat and what happens? Nothing. The Wildcat gets an extra round of improvements and the Great Marianas Turkey Shoot becomes the Great Marianas Solid But Unremarkable Victory.
To suggest that the Hellcat was strategically significant (and therefore should have been included in the article) is to suggest that, had the US had to make do with [improved] Wildcats, Japan might well have won.
I'd say that it was the F4F and SBD who bore the brunt of the might of Japan (who had also been at war before Germany) and held the line until newer types became available.