Japanese Opinion of Me-109

Posted By: Martin <mgrant@hei.com>
Date: Tuesday, 13 February 2001, at 3:31 a.m.

Hi guys!
I'm skipping through a book by Martin Caidin called: "ME-109 Willy Messerschmitt's Peerless Fighter" (Caidin owns an early model that he flies!) Anyway, in the chapter "Luftwaffe Strikes" on page 66 on the top of the second column of text, it says and I quote: " Two Fighters (ME-109E-3) that went to Japan had been intended to serve as a basis for Japanese production of the Me-109E-3 by Kawasaki, but Japanese Pilots held the Messerschmitt in strong disfavor because of it's high wing loading and what they considered poor maneuverability".

According to the book, this was early in 1940. I'm not sure of the exact month that the Zeros and Oscars replaced the Claudes and Nates, but man, was there anything that could turn with JAAF or JNAF machines in 1940? Thought you guys may find this little factoid interesting!

Cheers!
Martin  

Posted By: Deniz Karacay <denizkaracay@yahoo.com>
Date: Saturday, 17 February 2001, at 12:57 p.m.

Well, first of all Martin Caidin owns a Bf108 Taifun which is a touring plane and has nothing to do with Me109 except some superficial similarity in outlook. That does not mean to discredit him, he is a great writer, one of the few, to get to the human side of the history.

Anyway, perhaps IJAAF choice of selecting Ki44 over Me109 is a good one. I think Me 109 would be unsuited to Pacific not least of its landing gear design. Approximately %5-%10 of all Me109s were lost in accidents due to the landing gear. It would have been far worse in Pacific. DB601 engine would have given (as later did in Ki61) a lot of headache.

However, that does not mean that Me109 is inferior to Japanese planes. In fact, very few Japanese Fighters had the performance in 1944 equal or better than that of Bf109F4 of 1942. Japanese were rather late to think about E3 in 1940. They should have considered or more correctly Germans should have offered new Me109F to Japanese. But as usual no real support was given by Germany to Japan or vice versa (Remember Japanese not giving rights to build Ki46 which would have made difference over the Eastern Front and Atlantic).

I also think that Japanese way of thinking about air war is not far sighted. Air war is a three-dimensional space and vertical mumbo-jumbo should also be considered as "Maneuver". As a matter of fact, turning radius is a defensive maneuver, MS406 could turn well inside Me109 but it has no chance of winning a fair engagement because no one will turn with him.

More importantly than turning radius is instantaneous rate of turn, which is the degrees you covered in a turn per second. If you have better instantaneous rate or turn, you can still get a good shot even though radius of your turning circle is larger.

Anyway, in a turning fight, both planes will loose altitude so real comparison is hard to make. But if you are caught from above at a lower speed in a more maneuverable plane, your chances to get away are still slim.

Spitfire holds its own against Me109 not due to but besides its good more maneuverability. This is more obvious in the case of Spitfire Mk V against early FW190A.

The successful criteria for a WWII fighter is:

Engine Power
Power to weight ratio
Armament
Ability to take punishment
Maneuverability (well I don't mean a Gee Bee or Caudron racer be good fighter though)

and in that order.

I think what Japanese needed was a FW190 and Ju88 and production rights for BMW801 nothing else. Well they might get some advise from German Fighter pilots as well.

 

Posted By: Hiroyuki Takeuchi <hiryu@bigfoot.com>
Date: Thursday, 15 February 2001, at 7:56 p.m.

The IJAAF bought both the 109. Interestingly enough, the IJNAF bought the He112 (which was put down by the IJN pilots for the same reason of poor maneuverability).

I am very doubtful about the Kawasaki production of the 109 as I have never read about that in Japanese sources.

An interesting episode regarding the Bf109 test in Japan is that when it was tested against the Ki44 and Ki60 prototypes, the 109 was piloted by a German test pilot who used the dive and zoom technique. The IJA testing staff promptly replaced the German pilot with a Japanese pilot because they felt they could not carry on the evaluation since the German pilot "refused" to dogfight. And the fact that the Ki44 (which was supposed to be a dive and zoom type plane) could outmaneuver the 109 is one of the reasons it was adopted.

Posted By: Martin Grant <mgrant@hei.com>
Date: Thursday, 15 February 2001, at 5:21 a.m.

Hi Phil!

Good question. I wondered that one too, but Caidin doesn't say. He just says "Japanese Pilots"....it would be interesting to know if "front line" combat pilots were allowed to test it, or was it some sort of "research" team of Aeronautical (sp) Engineers??

Cheers!
Martin

Posted By: Mike Goodwin <Mike.Goodwin@iname.com>
Date: Thursday, 15 February 2001, at 10:59 a.m.

According to Francillon, The Ki-44 was selected in preference to the Bf-109, so that would have been the IJAAF. There may well have been IJNAF interest too, but I don't know any details.

Cheers,
Mike

Posted By: Richard Dunn <rdunn@rhsmith.umd.edu>
Date: Tuesday, 13 February 2001, at 6:31 p.m.

Martin
Me 109 turning capacity is a real fine point. The Me 109 was a really advanced fighter in certain ways. British pilots who test flew captured versions, as well as Japanese pilots did not realize this. It had leading edge flaps. Unless the leading edge flaps were hanging down or banging against the wing it wasn't really turning! Of course this was also a stall warning but real good 109 pilots knew they could fly into the near stall regime and fight.

Japanese pilots were generally blessed with really docile flying characteristics by their designers.

But... as suggested above things are not always as they seem. Don't take every comment at face value!

RLD

Posted By: Mitch Inkster <shacs007@aol.com>
Date: Thursday, 15 February 2001, at 1:26 a.m.

Richard,
I too would like to know your sources for your remark concerning Brit. test pilots and the Me 109. I find it very hard to believe that this statement would be true; after all, that's what a test pilot does! Any test pilot worth his salt would have taken this ship up and tried to break it. He would have done comparison testing with other frontline a/c, he would have done performance testing, weapons testing etc. etc. As a test pilot it was HIS job to find out all the strategic and performance weaknesses of any design tested. Also consider the fact that many test pilots of the time were also combat pilots as well!

Mitch Inkster

Posted By: Richard Dunn <rdunn@rhsmith.umd.edu>
Date: Thursday, 15 February 2001, at 6:33 p.m.

Mitch
I'm a bit reticent to respond since some folks with preconceived notions seem to get emotional when facts are presented that don't fit their view of things. But here goes. Take this all as someone else's opinion!

The British evaluation of the 109 is pretty well known. If you want the short hand version try William Green, The Warplanes of the Third Reich. An early production Bf 109E-3 (believe this was the version the Japanese evaluated) was evaluated at Boscombe Down and then sent to the Royal Aircraft Establishment at Farnborough for detailed testing beginning May 14th, 1940. To make a long story short the British pilots rated the 109 superior to the Hurricane and Spitfire I configurations then in current use in virtually every category of performance except turning circle. The Hurricane was rated superior in low altitude maneuverability and the Spitfire was considered to have a superior turning circle, markedly so above 20,000 feet. There is the judgment of the test pilots.

Now for "the other side of the story" which some folks apparently don't like to hear. Again, this is NOT my opinion, I'm just quoting.

This is from a chapter in Ishoven's Messerschmitt Bf 109 at War. The chapter titled "Fighting the Spitfire" is authored by Erwin Leykauf.

"During what was later called the Battle of Britain, we flew the Messerschmidt Bf 109E. The essential difference from the Spitfire Mark I flown at that time by the RAF was that the Spitfire was less maneuverable in the rolling plane. With its shorter wings (2 meters less wingspan) and square-tip wings, the Bf 109 was more maneuverable and slightly faster." -- He goes on to talk about the Spit later getting clipped wings and the 109s leading edge flaps. Then: "For us the more experienced pilots, real maneuvering only started when the slots were out. For this reason it is possible to find pilots from that period (1940) who will tell you a Spitfire turned better than the Bf 109. That is not true. I myself had many dogfights with Spitfires and could always outturn them."

I'm not suggesting the 109 could outturn ANY of the highly nimble Japanese fighters. All I'm saying is that it is possible to misjudge the 109s capabilities. Let's say that's Leykauf's opinion. If it doesn't suit you, blame him. I've never flown a 109. I'm just the messenger.

RLD

Posted By: Mitch Inkster <shacs007@aol.com>
Date: Friday, 16 February 2001, at 1:13 a.m.

Richard,
Thanks for the reply. But I am still left wondering how much pilot skill was involved in this. It seems to me that a lot of the statements made by your sources are general in nature. Someone with the skill of say, Stanford Tuck, Ginger Lacey, Sailor Malan, Johnnie Johnson would certainly be able to get more out of a given a/c than lesser skilled fliers. The same could be said for Galland, Molders, Wick, Bartels and Assi Hahn to name a few. How would an a/c, any a/c perform the same with different pilots at the controls?

It's not that no one wants to hear what your sources had to say, it's that proof was wanted so that some could search for themselves.

Mitch

Posted By: Richard Dunn <rdunn@rhsmith.umd.edu>
Date: Friday, 16 February 2001, at 3:28 p.m.

Mitch
Sorry to be defensive but...

Actually I think the whole situation may be relatively complicated. The British may have gotten accurate results under the test protocols they used. They may, however, have used standards that did not replicate actual, common combat conditions. That is, entering the turn at maximum speed and not losing height during the turn may not represent a common combat situation. That's how they measured turning circle (not sure if other scenarios were used as well). On the other hand, when the Allies tested the A6M3 against various Allied fighters in Australia, they apparently went to pains to set up realistic combat situations.

Main point I wanted to make was don't accept old "truth" at face value. Keep an open mind and search out the available facts from multiple sources.

You are correct that pilot quality is probably a bigger factor than most others. Which maneuvered better the MiG-15 or F-86? The answer: the one that Chuck Yeager was flying. But when the Allies tested a Ki43-II against a late model P-40N American pilots with minutes, rather than hours, of Oscar flight experience could easily outmaneuver the P-40. So sometimes...

For what its worth.
Rick

Posted By: Mitch Inkster <shacs007@aol.com>
Date: Saturday, 17 February 2001, at 11:48 a.m.

Richard,
Nice post. I tend to agree with you on many points. We are being duped constantly by propaganda. One has to look no further than the Gulf War to see this fact. Again, well posted and certainly food for thought.

Mitch

Posted By: Graham Boak <graham@boak98.freeserve.co.uk>
Date: Wednesday, 14 February 2001, at 9:53 a.m.

Do you have any evidence to back up these comments? The 109E was tested in the UK, in France, in Japan and in Russia, by experienced test pilots at the national flight test centers. All of them made much the same comments. It is exceedingly unlikely that they would not have tested the aircraft to its true limits - after all the leading edge slots on the 109 were manufactured under a Handley-Page patent, so they were well understood by everyone.

Obviously an average squadron pilot would be unable to get the best from a captured aircraft on which he had little experience - but it is insulting to suggest that the test pilots could not measure this.

As an ex-aerodynamicist, it is clear that the 109 used the slats to compensate for its higher wing loading (especially for the landing), and would have been totally outclassed in the turning fight without them. With them, it was much more competitive with the Hurricane and Spitfire, the winner usually being the better pilot (who would then go home and tell all his friends that "Our a/c outturns the enemy....") However, the turning fight would rarely be in completely symmetrical flight, so the 109 suffered from slats coming out on only one wing, resulting in loss of position. The Spitfire, on the other hand, had a sharp stall that novice pilots would tend to fight shy off......

The overall effect however is clear from the years of experience - 109s choose to fight in the vertical and Hurricanes/Spitfires in the horizontal (until the Spitfires had enough power to dominate in the vertical too.)

As the Japanese fighters had lower wing loading and similar power loading to the 109E their superiority in the horizontal is self-evident. They could out-maneuver the aircraft that could out-maneuver the 109.

Posted By: Martin <mgrant@hei.com>
Date: Wednesday, 14 February 2001, at 8:38 a.m.

Hi Richard!
Re-reading your message about turning radius of the 109, I see what you mean. Some pilots from other nations such as England/Japan may not have known how to squeeze the performance out of an aircraft given to them for evaluation. It no doubt took pilots assigned to them (such as the 109) many missions and hours to fully learn their a/c capabilities and temperaments. Much as a Luftwaffe Pilot given a limited time in a Zero may not learn quickly how to squeeze optimum performance out of her. I found it interesting when you say that Japanese Pilots were blessed with relatively "docile" flying characteristics in their a/c. I've read that the 109 could be tricky...
Cheers!
Martin

Posted By: Martin Grant <mgrant@hei.com>
Date: Wednesday, 14 February 2001, at 5:15 a.m.

Right you are! I am under the opinion that range and maneuverability was EVERYTHING to the Japanese Pilots, not that that is a bad thing...they sure were good pilots w/good planes, but the "Western" designs often tried to meet that with stability, ruggedness and fire power ...the ME 109 was a great craft. I have a feeling though, that if one ever tried to "mix it up" as it were with a Zero in it, that they'd have to resort to superior speed and armament to "boom and Zoom" as well. Agile JAAF and JNAF craft would no doubt turn inside a ME-109. Interesting stuff. Thanks for your comments!

Cheers!
Martin

Posted By: Tony Williams <autogun@globalnet.co.uk>
Date: Thursday, 15 February 2001, at 1:21 a.m.

The 109 certainly couldn't rely on superior armament to the Zero; in fact, the Bf 109E had virtually the same armament as the version of the Zero in service at the start of the war (two rifle-calibre guns, two low-velocity 20mm cannon), but from the 109F onwards there was only one cannon in most versions, whereas the Zero increased its firepower.

Tony Williams
Author: "Rapid Fire: The Development of Automatic Cannon, Heavy machine Guns and Their Ammunition for Armies, Navies and Air Forces"
Details on my military gun and ammunition website:

http://www.users.globalnet.co.uk/~autogun/index.htm

Posted By: Martin <mgrant@hei.com>
Date: Monday, 19 February 2001, at 1:52 a.m.

Makes sense to me! YOu know, another reason why the Me-109, at least the early versions circa "E" series at least, would not have been suitable for Japanese purposes is it's lack of range. It has been theorized that the lack of range is what cost Germany the Battle of Britain. Possibly. At any rate, they could not escort their bombers to target and back or even to target most times over England. Range was paramount in the pacific! Thanks for your insight!

Cheers!
Martin

Posted By: Deniz Karacay <denizkaracay@yahoo.com>
Date: Monday, 19 February 2001, at 8:18 a.m.

Well, I tell you, if Germans had Zero in the Battle of Britain, their losses might well be higher. Zero was unsuited to hit and run tactics over Europe as well. Remember how well done against Japanese formations with crude early warning in CBI theatre. Over Britain, it would have been worse.

Posted By: Martin
Date: Monday, 19 February 2001, at 8:34 a.m.

Hi Deniz!
You could well be right. The Germans may have suffered worse losses had they had Zeros at their disposal during battle of Britain. However, I have read where Saburo Sakai said something about "who knows" what would have happened if they'd had Zeros that could escort their bombers to and from target. Its purely subjective. However, the Zeros did well against the British pilots in their spits and hurricanes in the pacific. At least early in the war. But you could well be right.

Cheers!

Martin

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