The Development of the Junkers Jumo 004B—The World’s First Production Turbojet

1997 ◽  
Vol 119 (4) ◽  
pp. 783-789 ◽  
Author(s):  
C. B. Meher-Homji
Keyword(s):  
Axial Flow ◽  
Vice President ◽  
Second World War ◽  
Historical Background ◽  
German Industry ◽  
World War ◽  
Jet Engine ◽  
The Face ◽  
Second World ◽  
Engine Development

This paper describes the pioneering work of Anselm Franz who, while working for the Junkers Engine company in Germany, designed and made operational the world’s first production jet engine, the Junkers Jumo 004, which was the powerplant for the formidable Messerschmitt ME 262 fighter. The paper covers the historical background of jet engine development in Germany during the Second World War and discusses design details of this remarkable axial flow, 1980 lb (900 kg) thrust engine. The development represented a historic achievement for Anselm Franz and his design team at Junkers. Approximately 6000 engines were built at the end of the Second World War in the face of acute shortages and damage to German industry. The Jumo was brought from conceptual design to production in a span of four years. Franz joined Avco Lycoming in 1952 and worked for 16 years. He retired as Vice President in 1968 after making prolific contributions to the development of several Lycoming engines including the T53, the T55, and the AGT-1500. Anselm Franz passed away at the age of 94 in Stratford, Connecticut. This paper is a modest tribute to a jet engine pioneer who, in spite of his extensive contributions to gas turbine technology, will always be remembered as the man who designed the world’s first production turbojet.

scholarly journals The Development of the Junkers Jumo 004B: The World’s First Production Turbojet

1996 ◽  
Author(s):  
Cyrus B. Meher-Homji
Keyword(s):  
Axial Flow ◽  
Vice President ◽  
Second World War ◽  
Historical Background ◽  
German Industry ◽  
World War ◽  
Jet Engine ◽  
The Face ◽  
Second World ◽  
Engine Development

This paper describes the pioneering work of Anslem Franz who, while working for the Junkers Engine company in Germany designed and made operational the world’s first production jet engine the Junkers Jumo 004 which was the powerplant for the formidable Messerschmitt ME 262 fighter. The paper covers the historical background of jet engine development in Germany during the Second World War and discusses design details of this remarkable axial flow, 1980 Lbs (900 Kg) thrust engine. The development represented a historic achievement for Anslem Franz and his design team at Junkers. Approximately 6,000 engines were built at the end of the second world war in the face of acute shortages and damage to German industry. The Jumo was brought from conceptual design to production in a span of four years. Franz joined Avco Lycoming in 1952 and worked for 16 years. He retired as Vice President in 1968 after making prolific contributions to the development of several Avco engines including the T53. the T55 and the AGT-1500. Anslem Franz passed away at the age of 94 in Stratford, Connecticut. This paper is a modest tribute to a jet engine pioneer who, in spite of his extensive contributions to gas turbine technology, will always be remembered as the man who designed the world’s first production turbojet.

Griffith’s Equation

2020 ◽  
pp. 249-266
Author(s):  
Brian Cantor
Keyword(s):  
Science Fiction ◽  
Second World War ◽  
World War ◽  
Jet Engine ◽  
The First World War ◽  
The Uk ◽  
Corner Cracks ◽  
Second World ◽  
First World ◽  
Engine Development

Most materials fracture suddenly because they contain small internal and surface cracks, which propagate under an applied stress. Griffith’s equation shows how fracture strength depends inversely on the square root of the size of the largest crack. It was developed by Alan Griffith, while he was working as an engineer at Royal Aircraft Establishment Farnborough just after the First World War. This chapter examines brittle and ductile fracture, the concepts of fracture toughness, stress intensity factor and stBiographical Memoirs of Fellows ofrain energy release rate, the different fracture modes, and the use of fractography to understand the causes of fracture in broken components. The importance of fracture mechanics was recognised after the Second World War, following the disastrous failures of the Liberty ships from weld cracks, and the Comet airplanes from sharp window corner cracks. Griffith’s father was a larger-than-life buccaneering explorer, poet, journalist and science fiction writer, and Griffith lived an unconventional, peripatetic and impoverished early life. He became a senior engineer working for the UK Ministry of Defence and then Rolls-Royce Aeroengines, famously turning down Whittle’s first proposed jet engine just before the Second World War as unworkable because the engine material would melt, then playing a major role in jet engine development after the war, including engines for the first vertical take-off planes.

La “neutralidad” chilena en la Segunda Guerra Mundial (1939-1943): Un análisis historiográfico con énfasis en la literatura sobre las relaciones Chile-Japón

2016 ◽  
pp. 95
Author(s):  
Pedro Iacobelli Delpiano
Keyword(s):  
World War Ii ◽  
Vice President ◽  
Second World War ◽  
Power Dynamics ◽  
Diplomatic Relations ◽  
World War ◽  
International History ◽  
Roosevelt Administration ◽  
The Us ◽  
Second World

ResumenLa literatura sobre la historia internacional de Chile durante la Segunda Guerra Mundial ha centrado el debate en torno al juego de presiones ejercidas por los Estados Unidos hacia los gobiernos radicales de Jerónimo Méndez Arancibia y Juan Antonio Ríos Morales para conseguir que Chile se sumara a la política continental contra las fuerzas del Eje. La neutralidad chilena fue interpretada como una actitud traicionera por los estadounidenses y en un triunfo por los países del Eje durante 1941 a 1943. Este artículo introduce el debate y busca presentar las posibilidades historiográficas al incluir a Japón, tanto como actor relevante en la política chilena como receptor de la “neutralidad” chilena en el periodo.Palabras clave: Chile, Japón, Segunda Guerra Mundial, Estados Unidos, historiografíaThe Chilean “Neutrality” in World War II (1939-1943): A historiographical analysis focused on the literature of the diplomatic relations between Chile and JapanAbstractThe literature about Chile´s international history during World War II has heavily laid on the power dynamics between the US and the Chilean radical governments of vice-president (interim) Jerónimo Méndez Arancibia and president Juan Antonio Rios Morales. Since the Roosevelt administration sought to secure the rupture of diplomatic relations between Chile and the Axis powers, Santiago´s refusal to break relations was understood as treason by the US and as a diplomatic success by the Axis powers during 1941-1943.This paper delves into the historiographical possibilities in including Japan, either as a relevant actor in the Chilean politics and as receptor of the newsabout Chile´s neutrality.Keywords: Chile, Japan, Second World War, United States, historiographyA “neutralidade” chilena na segunda guerra mundial(1939-1943): uma análise historiográfica, com ênfase naliteratura sobre as relações Chile-JapãoResumoA literatura sobre a história internacional do Chile durante a Segunda Guerra Mundial tem-se centrado no debate em torno ao jogo de pressões exercidas pelos Estados Unidos aos governos radicais de Jerónimo Méndez Arancibia e Juan Antonio Rios Morales, para conseguir que o Chile pudesse se somar a política continental contra as forças do Eixo. A neutralidade chilena foi interpretada como uma atitude traiçoeira pelos norte-americanos e uma vitória para os países do Eixo durante 1941 a 1943. Este artigo introduz o debate e procura a presentar as possibilidades historiográficas ao incluir ao Japão, tanto como um ator relevante na política chilena como o destinatário da “neutralidade” chilena no período.Palavras-chave: Chile, Japão, Segunda Guerra Mundial, Estados Unidos, historiografia

JEWISH IDENTITY IN THE FACE OF ANTI-SEMITISM

1998 ◽  
Vol 41 (3) ◽  
pp. 895-900
Author(s):  
ELISABETH ALBANIS
Keyword(s):  
Second World War ◽  
World War ◽  
Cambridge University ◽  
Anti Semitism ◽  
The Face ◽  
History Of ◽  
English Speaking ◽  
English Speaking World ◽  
Anti Jewish ◽  
Second World

A history of the Jews in the English-speaking world: Great Britain. By W. D. Rubinstein, Basingstoke: Macmillan, 1996. Pp. viii+539. ISBN 0-312-12542-9. £65.00.Pogroms: anti-Jewish violence in modern Russian history. Edited by John D. Klier and Shlomo Lambroza. Cambridge: Cambridge University Press, 1992. Pp. xx+393. ISBN 0-521-40532-7. £55.00.Western Jewry and the Zionist project, 1914–1933. By Michael Berkowitz. Cambridge: Cambridge University Press, 1997. Pp. xvi+305. ISBN 0-521-47087-0. £35.00.Three books under review deal from different perspectives with the responses of Jews in Western and Eastern Europe to the increasing and more or less violent outbursts of anti-Semitism which they encountered in the years from 1880 to the Second World War. The first two titles consider how deep-rooted anti-Semitism was in Britain and Russia and in what sections of society it was most conspicuous, whereas the third asks how Western Jewry became motivated to support the Zionist project of settlement in Palestine; all three approach the question of how isolated or intergrated diaspora Jews were in their respective countries.

2. Historical background

2019 ◽  
pp. 8-28
Author(s):  
Rhona K. M. Smith
Keyword(s):  
Human Rights ◽  
Second World War ◽  
Historical Background ◽  
International Labour Organization ◽  
World War ◽  
International Human Rights ◽  
Human Rights Protection ◽  
Rights Protection ◽  
International Human ◽  
Second World

This chapter provides an historical sketch of international human rights. It considers the divergent views as to the origins of human rights. The chapter traces developments including the law of aliens; diplomatic laws; the laws of war; slavery; minority rights; the establishment of the International Labour Organization; and human rights protection after the Second World War.

scholarly journals Small Revelations, … Maybe Not Even with an Apocalyptic Tone

Humanities ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 128
Author(s):  
Anders E. Johansson
Keyword(s):  
Immanuel Kant ◽  
Common Sense ◽  
Second World War ◽  
Fake News ◽  
World War ◽  
Three Guineas ◽  
The Face ◽  
Real Truth ◽  
And Control ◽  
Second World

This article tries to be funny in a very serious way, following Virginia Woolf’s call in Three Guineas that, in the face of man-made disasters, we may have to make fools of ourselves in relation to common sense. Apocalypses, such as the Anthropocene, climate change, and mass extinction require—like the Second World War that Woolf refused to simplify—a tentative search for knowledge, not controlling and predictable methods in the search for a solution. The article is based on how Jacques Derrida’s discussion with Immanuel Kant regarding how truth should sound before the apocalypse over the years has increasingly come to describe contemporary doxa, within which there is only room for mystagogues, who inaugurate followers in the “real truth” behind “fake news”, or scientisticists, who believe that facts and truth are the same thing. When Derrida shows how these two positions depend on each other, sharing the modern belief that knowledge is associated with development, boundaries and control, he also shows how this narrows knowledge down to the predictable, and, thus, makes it complicit with the mistaken efforts of control responsible for today’s challenges. Against this background, the article analyzes works by the artist, Eva Löfdahl, and links them with questions concerning connections between truth, knowledge, art, and science.

II. The Role of a Theologian in Genocide Prevention: Theology in Postgenocide Rwanda

Horizons ◽  
2020 ◽  
Vol 47 (1) ◽  
pp. 76-89
Author(s):  
Elisee Rutagambwa
Keyword(s):  
International Community ◽  
Second World War ◽  
World War ◽  
World Community ◽  
The Holocaust ◽  
The World ◽  
The Future ◽  
The Face ◽  
Second World

When the world came to its senses after the Second World War and reports of the horrors of the Holocaust began to spread, the international community reacted with disbelief. And when reality proved much worse than even the worst nightmare, the world community reacted unanimously with a general outcry: crimes of this magnitude must never happen again. It appeared quite clear that, in the future, the international community would never again remain inactive in the face of such appalling tragedy. Yet, the firm imperative “never again” has become “again and again,” and the same dreadful crimes have been repeated in many parts of the world.

Conclusion

1999 ◽  
pp. 231-232
Author(s):  
Diane Frost
Keyword(s):  
West Africa ◽  
Second World War ◽  
West African ◽  
Social Consequences ◽  
World War ◽  
The West ◽  
West African Coast ◽  
The Face ◽  
Post War ◽  
Second World

The Kru communities of Freetown and Liverpool emerged in response to, and as a consequence of, British maritime interests. Kru were actively encouraged to leave their Liberian homeland and migrate to Freetown, where they came to constitute an important part of its maritime trade. The Kru formed a significant nucleus of Freetown’s seafarers, as well as the majority of ships’ labourers or ‘Krooboys’ that were recruited to work the West African coast. The occupational niche that the Kru eventually came to occupy in Britain’s colonial trade with West Africa had important social repercussions. The Kru were labelled as unusually competent maritime workers by shipowners and colonial administrators, and the Kru encouraged this label for obvious expedient reasons. The gradual build-up of the Kru’s dominance in shipping during the nineteenth century and until the Second World War contrasts sharply with their position in the post-war period. The breaking down of their occupational niche due to circumstances beyond their control had direct social consequences on the nature of their community. Whilst many Kru clubs and societies depended on seafaring for their very existence, the demise of shipping undermined such societies’ ability to survive in the face of increasing unemployment and poverty....

Einleitung zu Georg Lukács: Warum sind Demokratien den Autokratien überlegen? und Das wirkliche Deutschland

2015 ◽  
Vol 63 (2) ◽  
Author(s):  
Konstantin Baehrens
Keyword(s):  
Political Philosophy ◽  
Intellectual Development ◽  
Philosophical Anthropology ◽  
Second World War ◽  
Historical Background ◽  
World War ◽  
Collective Guilt ◽  
Political Debates ◽  
Second World ◽  
Shed Light

AbstractTwo short typescripts by G. Lukacs from the archive, dating from 1941/42, shed light on his appraisal of the cultural ‘inner reserves’ of Germany and the ‘moral reserves’ of the democracies involved in the Second World War, as well as on Lukacs’s political philosophy at that time. The conception of an intrinsic interrelation of a humanist philosophical anthropology and rationalist epistemology elucidates his egalitarian and democratic account. Both texts are located within the intellectual development of the author in an introduction by the editor, which sketches the historical background and indicates relevant contemporaneous theoretical and political debates, such as the controversies over realism and humanism and also a dispute with K. Jaspers on German collective guilt.

Taiwanese Distant-Water Fisheries in Southeast Asia, 1936-1977

2009 ◽  
Author(s):  
Henry T. Chen
Keyword(s):  
Local Level ◽  
National Level ◽  
Academic Research ◽  
Second World War ◽  
Historical Background ◽  
Fishing Industry ◽  
World War ◽  
Working Lives ◽  
History Of ◽  
Second World

This study provides a detailed study of the fishing nation of Taiwan at a regional and local level in order to address the lack of academic research into the Taiwanese fishing industry in comparison to other nations. Over three stages of analysis it identifies the reasons for the rise and decline of Taiwanese distant-water fisheries. The first stage examines the broader historical background, government policy, and birth of the Taiwanese fishing industry. The second explores the industry at a national level, analysing the relationships between fishing, government, military, and ancillary industries. The third approach narrows the scope to individual fishing communities and explores the working lives and cultural habits of the fishermen. The major focus is the port of Kaohsiung and how it became the major supply base for the fishing industry. It explores Taiwan’s relationship with Japan and the postwar decline due to Japan’s losses in the Second World War. Finally, it considers the development of Taiwanese colonial and postwar fishing policies. It concludes that modern fishing techniques were introduced from Japan, and emboldened Taiwanese fisherman to risk entering remote and foreign waters. The author suggests that further research into Taiwan take would help scholars better understand the history of distant-fisheries. The journal consists of nine chapters, an introduction and conclusion, a list of interviewees, and a bibliography of English and Chinese-language sources.

Sign in / Sign up

Export Citation Format

Share Document