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Archive for March, 2010

Development secret stories # 1 from “Fighter of phantom”

Posted by kikakuya on March 26, 2010

Chapter 9 Duck of 800 kilos per hour —- “Shinden”

“The aircraft designer has to have the capacity to control the airplane, too. ”

This strategic education of the aircraft development affair started after the beginning of the Pacific War. Japanese Navy considered to have to change the common concept “a designer and a pilot should be different ability”. Army and Navy competed to keep a lot of valuable engineers. They employed students of the engineering department in the university and the special school, covered the golden eggs with military uniform , and made them to a technological officer.

In addition, Navy tried to teach the control of the airplane to the technological officers, and to improve the ability as aircraft designers. Really, the aim was correct.
The aircraft designer can get various senses in the prototype aircraft in case of the double-seats or the twin-engined aircraft only by flying together. However, it cannot be done in case of the single-seated like the fighter.
Nakajima’s engineer KOYAMA has been said to have slipped into a narrow body when the Nakajima Ki-27 were developed. However, he was not gripping the control stick.
The sense that he had obtained must have been far sense. It is because this is not the one which was obtained directly through the control stick by himself.
The designer analyzes it hearing what the pilot says, and he feeds back them to his design. However, the communication of a complete will is difficult, and irritation might often have been caused.
However, if the aircraft designer is a pilot, such worry is solved.
Then in 1947, Japanese Navy executed the aircraft control education to some aircraft designers by proposal of Rear Admirals RIKIZO TADA, Technical Director of the Aircraft headquarters. Five engineer pilots were born by this system in fiscal year 1941.

・Fiscal year 1941:Arms manufacture captain MASATAKA TSURUNO [Fighter aircraft], Arms manufacture captain TADAO YASUDA [Seaplane]
・Fiscal year 1942:Technological captain MASAATU KANEHIRO [Fighter aircraft], Technological captain ROKURO OKUDAIRA [Attack aircraft]
・Fiscal year 1943:Technological captain MASAAKI KATO [Seaplane]

However, though the control training to Arms manufacture officer or Technological officer often had been executed before this system , the level was not real training that got on the fighter aircraft. That was training by the abc training aircraft.
In that sense, the technological captain Tsuruno’s existence was different ability in the Japanese Navy. His work which was done by the end of War also was to be unexampled in Japan as the first engineer pilot whom Japanese Navy regularly had trained.

(To be continued)

*Quotation from “Fighter of the Phantom” written by YOSHIRO IKARI.
The Nakajima Ki-27 was the main fighter aircraft used by the Imperial Japanese Army Air Force.
異端の空―太平洋戦争日本軍用機秘録 (文春文庫)

幻の戦闘機―「零戦」後の陸海軍機の開発秘話 (光人社NF文庫)


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Development secret stories of Japanese Army and Navy fighter

Posted by kikakuya on March 18, 2010

You could get a lot of information about the development secret stories of a lot of Japanese Army and Navy fighter from “Fighter of the Phantom” which was written by YOSHIRO IKARI. It became good key for me to know how “post Mitsubishi A6M ZERO” had been developed and vanished without the actual combat. So, I would like to introduce some development secret stories hardly known in foreign countries. Of course, it’s including Shinden. The document should be shown in order of its development, but the rule is broken. Shinden has to be top document.

First of all, let’s introduce the author of this book. The author is Mr. YOSHIRO IKARI. He was born in Kagoshima in 1925, and graduated from the Tokyo Metropolitan Aircraft Technical School. He was summoned in Army Air Technical Research Institute during the war as a technological captain, and graduated from Yokohama Industrial College (present Yokohama National University) after the war. He has published a lot of documents about relations between mechanism and human such as aircraft, automobiles and railways as a theme.
“Techno-nerd group of burning Honda” “Men who offered life for Skyline GT” “Challenge at Ultra-High Speed” “Yokosuka Naval Air Technical Arsenal” “Six Kawanishi N1K [Violet Lightning]” “Eight pilots of Imperial Japanese Naval Academy” “The Last Flying Ace” Additionally, there are a lot of documents etc.
To my regret, I don’t know his present writing. He would be 85 years old this year. It would be great if the effort which our predecessors accomplished for 70 years or more ago is transmitted through this book even a little. Raising the war cause and the result to the shelf now, this effort could be as our property.
Translation of quotation part is posted next week. Chapter 9 Duck of 800 kilos per hour —- “Shinden”

Japanese is here

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