The Blériot III was an early French aeroplane built by pioneer aviators Louis Blériot and Gabriel Voisin . It was later modified and renamed the Blériot IV , but both versions failed to fly.
95-398: The Blériot III was radically different from what was to become the orthodox design for aircraft, having two large elliptical closed wing cells in tandem connected by booms. A single transversely mounted 24 hp (18 kW) Antoinette engine mounted on the lower front wing drove two tractor propellers using flexible drive shafts incorporating reduction gearing to reduce the 1,800 rpm of
190-476: A pervasive cult of personality around Adolf Hitler to influence public opinion. The government controlled artistic expression, promoting specific art forms and banning or discouraging others. Genocide , mass murder , and large-scale forced labour became hallmarks of the regime; the implementation of the regime's racial policies culminated in the Holocaust . After the initial success of German invasion of
285-453: A box wing design along with other advanced technologies. In 1924, the German aerodynamicist Ludwig Prandtl suggested that a box wing, under certain conditions, might provide the minimum induced drag for a given lift and wingspan. In his design, two offset horizontal wings have vertical wings connecting their tips and shaped to provide a linear distribution of side forces. The configuration
380-488: A communist uprising. The Reichstag Fire Decree , imposed on 28 February 1933, rescinded most civil liberties, including rights of assembly and freedom of the press. The decree also allowed the police to detain people indefinitely without charges. The legislation was accompanied by a propaganda campaign that led to public support for the measure. Violent suppression of communists by the SA was undertaken nationwide and 4,000 members of
475-585: A consortium of Tuscan public and private partners, led by the Aerospace Section of the Civil and Industrial Engineering Department of Pisa University, and has resulted in the manufacturing of a 2-seater VLA prototype. The configuration is also claimed to be theoretically efficient for wide-body jet airliners. The largest commercial airliner, the Airbus A380 , must make efficiency trade-offs to keep
570-469: A conventional cantilever monoplane . Wingtip vortices form a major component of wake turbulence and are associated with induced drag , which is a significant contributor to total drag in most regimes. A closed wing avoids the need for wingtips and thus might be expected to reduce wingtip drag effects. In addition to potential structural advantages over open cantilevered wings, closed wing surfaces have some unique aerodynamic properties: The upshot
665-657: A non-aggression pact with Poland. In March 1939, Hitler demanded the return of the Free City of Danzig and the Polish Corridor , a strip of land that separated East Prussia from the rest of Germany. The British announced they would come to the aid of Poland if it was attacked. Hitler, believing the British would not take action, ordered an invasion plan should be readied for September 1939. On 23 May, Hitler described to his generals his overall plan of not only seizing
760-514: A particular constant circulation) can be added to a classical loading like that shown by Durand to obtain a loading like those in the quasi-closed cases below. The two methods of analysis give different-looking versions of the optimum loading that are not fundamentally different. Except for small differences due to the numerical method used for the quasi-closed cases, the two kinds of loading are in principle just shifted versions of each other. Nazi Germany Nazi Germany , officially known as
855-474: A protectorate of France under the condition that its residents would later decide by referendum which country to join, and Poland became a separate nation and was given access to the sea by the creation of the Polish Corridor , which separated Prussia from the rest of Germany, while Danzig was made a free city . Germany regained control of the Saarland through a referendum held in 1935 and annexed Austria in
950-489: A reference classical cantilevered wing with the same wing span and total lift. Both efficiencies are evaluated for their respective optimal lift distributions. Values of ε greater than 1 indicate lower induced drag than that of a classical cantilevered wing for which ε = 1. Note that all of the C-wing configurations have ε greater than 1 and that there is little difference (no difference to the two decimal places shown in two of
1045-477: A rudder to the aft cell, replacing the forward wings with a more conventional biplane arrangement, adding a second engine, and changing the propellers from tractors to pushers. At this point, it was renamed the Blériot IV . Attempts to fly the aircraft as a floatplane were made on 12 and 18 October at Lac d'Engheim. Even with these modifications, the aircraft still refused to leave the ground. They then removed
SECTION 10
#17327914649431140-459: A second national anthem. Germany was still in a dire economic situation, as six million people were unemployed and the balance of trade deficit was daunting. Using deficit spending , public works projects were undertaken beginning in 1934, creating 1.7 million new jobs by the end of that year alone. Average wages began to rise. The SA leadership continued to apply pressure for greater political and military power. In response, Hitler used
1235-772: A substantial minority of Germans, who lived mostly in the Sudetenland . Under pressure from separatist groups within the Sudeten German Party , the Czechoslovak government offered economic concessions to the region. Hitler decided not just to incorporate the Sudetenland into the Reich, but to destroy the country of Czechoslovakia entirely. The Nazis undertook a propaganda campaign to try to generate support for an invasion. Top German military leaders opposed
1330-626: A thousand people (out of a population of around 16,000) committed suicide in Demmin around 1 May 1945 as the 65th Army of 2nd Belorussian Front first broke into a distillery and then rampaged through the town, committing mass rapes, arbitrarily executing civilians, and setting fire to buildings. High numbers of suicides took place in many other locations, including Neubrandenburg (600 dead), Stolp in Pommern (1,000 dead), and Berlin, where at least 7,057 people committed suicide in 1945. Estimates of
1425-896: A war fought on two fronts. The invasion conquered a huge area, including the Baltic states, Belarus , and west Ukraine . After the successful Battle of Smolensk in September 1941, Hitler ordered Army Group Centre to halt its advance to Moscow and temporarily divert its Panzer groups to aid in the encirclement of Leningrad and Kyiv . This pause provided the Red Army with an opportunity to mobilise fresh reserves. The Moscow offensive, which resumed in October 1941, ended disastrously in December . On 7 December 1941, Japan attacked Pearl Harbor , Hawaii. Four days later, Germany declared war on
1520-515: A war of conquest to obtain more territory. The Saarland , which had been placed under League of Nations supervision for 15 years at the end of World War I, voted in January 1935 to become part of Germany. In March 1935, Hitler announced the creation of an air force, and that the Reichswehr would be increased to 550,000 men. Britain agreed to Germany building a naval fleet with the signing of
1615-665: Is said to offer improved efficiency for a range of aircraft. In the 1980s, the Ligeti Stratos used this approach. The name "PrandtlPlane" was coined in the 1990s in research by Aldo Frediani et al. of the University of Pisa . It is currently also used in some ultralight aircraft . IDINTOS (IDrovolante INnovativo TOScano) is a research project, co-funded by the regional government of Tuscany (Italy) in 2011 in order to design and manufacture an amphibious ultralight PrandtlPlane. The research project has been carried out by
1710-561: Is that although closed systems can produce large induced-drag reductions relative to a conventional planar wing, there is no significant aerodynamic advantage that uniquely accrues to their being closed rather than open. Various types of closed wing have been described: An early example of the closed wing was on the Blériot III aircraft, built in 1906 by Louis Blériot and Gabriel Voisin . The lifting surfaces comprised two annular wings mounted in tandem. The later Blériot IV replaced
1805-466: The Schutzstaffel (SS) and Gestapo to purge the entire SA leadership. Hitler targeted SA Stabschef (Chief of Staff) Ernst Röhm and other SA leaders who—along with a number of Hitler's political adversaries (such as Gregor Strasser and former chancellor Kurt von Schleicher )—were arrested and shot. Up to 200 people were killed from 30 June to 2 July 1934 in an event that became known as
1900-579: The Völkisch movement . The party, especially its paramilitary organisation Sturmabteilung (SA; Storm Detachment), or Brownshirts, used physical violence to advance their political position, disrupting the meetings of rival organisations and attacking their members as well as Jewish people on the streets. Such far-right armed groups were common in Bavaria , and were tolerated by the sympathetic far-right state government of Gustav Ritter von Kahr . When
1995-541: The 6th Army could be supplied by air, but this turned out to be infeasible. Hitler's refusal to allow a retreat led to the deaths of 200,000 German and Romanian soldiers; of the 91,000 men who surrendered in the city on 31 January 1943, only 6,000 survivors returned to Germany after the war. Losses continued to mount after Stalingrad, leading to a sharp reduction in the popularity of the Nazi Party and deteriorating morale. Soviet forces continued to push westward after
SECTION 20
#17327914649432090-745: The Anglo-German Naval Agreement on 18 June 1935. When the Italian invasion of Ethiopia led to only mild protests by the British and French governments, on 7 March 1936 Hitler used the Franco-Soviet Treaty of Mutual Assistance as a pretext to order the army to march 3,000 troops into the demilitarised zone in the Rhineland in violation of the Versailles Treaty. As the territory was part of Germany,
2185-634: The Anschluss of 1938. The Munich Agreement of 1938 gave Germany control of the Sudetenland, and they seized the remainder of Czechoslovakia six months later. Under threat of invasion by sea, Lithuania surrendered the Memel district in March 1939. Between 1939 and 1941, German forces invaded Poland , Denmark , Norway , France , Luxembourg , the Netherlands , Belgium , Yugoslavia , Greece , and
2280-575: The Battle of Berlin (16 April – 2 May 1945), Hitler and his staff lived in the underground Führerbunker while the Red Army approached. On 30 April, when Soviet troops were within two blocks of the Reich Chancellery , Hitler and his wife Eva Braun committed suicide . On 2 May, General Helmuth Weidling unconditionally surrendered Berlin to Soviet General Vasily Chuikov . Hitler
2375-738: The Communist Party of Germany were arrested. On 23 March 1933, the Enabling Act , an amendment to the Weimar Constitution , passed in the Reichstag by a vote of 444 to 94. This amendment allowed Hitler and his cabinet to pass laws—even laws that violated the constitution—without the consent of the president or the Reichstag. As the bill required a two-thirds majority to pass, the Nazis used intimidation tactics as well as
2470-517: The FlyNano Nano on 11 June 2012. The Belarusian built OW-1 experimental aircraft has since its maiden flight in 2007, been the only crewed annular closed wing aircraft to have successfully maintained stable horizontal flight. Flight tests showed that annular closed wing aircraft are less affected by cross wind then planes with other wing configurations . Miscellaneous modern examples include: Closed wings remain mostly confined to
2565-580: The German Empire (1871–1918) as the second. Severe setbacks to the German economy began after World War I ended, partly because of reparations payments required under the 1919 Treaty of Versailles . The government printed money to make the payments and to repay the country's war debt, but the resulting hyperinflation led to inflated prices, economic chaos, and food riots. When the government defaulted on their reparations payments in January 1923, French troops occupied German industrial areas along
2660-743: The German Reich and later the Greater German Reich , was the German state between 1933 and 1945, when Adolf Hitler and the Nazi Party controlled the country, transforming it into a totalitarian dictatorship . The Third Reich , meaning "Third Realm" or "Third Empire", referred to the Nazi claim that Nazi Germany was the successor to the earlier Holy Roman Empire (800/962–1806) and German Empire (1871–1918). The Third Reich, which
2755-565: The Hague Convention , industrial firms in the Netherlands, France, and Belgium were put to work producing war materiel for Germany. The Nazis seized from the French thousands of locomotives and rolling stock, stockpiles of weapons, and raw materials such as copper, tin, oil, and nickel. Payments for occupation costs were levied upon France, Belgium, and Norway. Barriers to trade led to hoarding, black markets , and uncertainty about
2850-511: The League of Nations in October, claiming its disarmament clauses were unfair if they applied only to Germany. In a referendum held in November , 95 per cent of voters supported Germany's withdrawal. In 1934, Hitler told his military leaders that rearmament needed to be complete by 1942, as by then the German people would require more living space and resources, so Germany would have to start
2945-791: The Low Countries . They quickly conquered Luxembourg and the Netherlands and outmanoeuvred the Allies in Belgium , forcing the evacuation of many British and French troops at Dunkirk . France fell as well, surrendering to Germany on 22 June . The victory in France resulted in an upswing in Hitler's popularity and an upsurge in war fever in Germany. In violation of the provisions of
Blériot III - Misplaced Pages Continue
3040-527: The Nazi euthanasia program . Political courts called Sondergerichte sentenced some 12,000 members of the German resistance to death, and civil courts sentenced an additional 40,000 Germans. Mass rapes of German women also took place. As a result of their defeat in World War I and the resulting Treaty of Versailles, Germany lost Alsace-Lorraine , Northern Schleswig , and Memel . The Saarland became
3135-722: The Night of the Long Knives . On 2 August 1934, Hindenburg died. The previous day, the cabinet had enacted the " Law Concerning the Head of State of the German Reich ", which stated that upon Hindenburg's death the office of Reich President would be abolished and its powers merged with those of Reich Chancellor. Hitler thus became head of state as well as head of government and was formally named as Führer und Reichskanzler ("Leader and Chancellor"), although eventually Reichskanzler
3230-522: The Ruhr and widespread civil unrest followed. The National Socialist German Workers' Party ( Nationalsozialistische Deutsche Arbeiterpartei ), commonly known as the Nazi Party, was founded in 1920. It was the renamed successor of the German Workers' Party (DAP) formed one year earlier, and one of several far-right political parties then active. The Nazi Party platform included destruction of
3325-530: The Sudetenland region of Czechoslovakia. Germany signed a non-aggression pact with the Soviet Union and invaded Poland on 1 September 1939, launching World War II in Europe . In alliance with Italy and other Axis powers , Germany conquered most of Europe by 1940 and threatened Great Britain. Racism , Nazi eugenics , anti-Slavism , and especially antisemitism were central ideological features of
3420-470: The federal election of 1932 , the party was the largest in the Reichstag , holding 230 seats with 37.4 per cent of the popular vote. Although the Nazis won the greatest share of the popular vote in the two Reichstag general elections of 1932, they did not have a majority. Hitler refused to participate in a coalition government unless he was its leader. Under pressure from politicians, industrialists, and
3515-566: The Allied bombing campaign became even more devastating. By targeting oil refineries and factories, they crippled the German war effort by late 1944. On 6 June 1944, American, British, and Canadian forces established a front in France with the D-Day landings in Normandy . On 20 July 1944 , Hitler survived an assassination attempt. He ordered brutal reprisals, resulting in 7,000 arrests and
3610-456: The British and French governments did not feel that attempting to enforce the treaty was worth the risk of war. In the one-party election held on 29 March, the Nazis received 98.9 per cent support. In 1936, Hitler signed an Anti-Comintern Pact with Japan and a non-aggression agreement with Mussolini, who was soon referring to a "Rome-Berlin Axis". Hitler sent military supplies and assistance to
3705-764: The German National People's Party – their former coalition partners – which then disbanded on 29 June. The remaining major political parties followed suit. On 14 July 1933 Germany became a one-party state with the passage of the Law Against the Formation of Parties , decreeing the Nazi Party to be the sole legal party in Germany. The founding of new parties was also made illegal, and all remaining political parties which had not already been dissolved were banned. Further elections in November 1933 , 1936 , and 1938 were Nazi-controlled, with only members of
3800-543: The German state in the Nazi era are "Nazi Germany" and the "Third Reich", which Hitler and the Nazis also referred to as the "Thousand-Year Reich" ( Tausendjähriges Reich ). The latter, a translation of the Nazi propaganda term Drittes Reich , was first used in Das Dritte Reich , a 1923 book by Arthur Moeller van den Bruck . The book counted the Holy Roman Empire (962–1806) as the first Reich and
3895-676: The Nationalist forces of General Francisco Franco in the Spanish Civil War , which began in July 1936. The German Condor Legion included a range of aircraft and their crews, as well as a tank contingent. The aircraft of the Legion destroyed the city of Guernica in 1937. The Nationalists were victorious in 1939 and became an informal ally of Nazi Germany. In February 1938, Hitler emphasised to Austrian Chancellor Kurt Schuschnigg
Blériot III - Misplaced Pages Continue
3990-781: The Nazis referred to as the Thousand-Year Reich , ended in May 1945, after only 12 years, when the Allies defeated Germany and entered the capital, Berlin , ending World War II in Europe . After Hitler was appointed Chancellor of Germany by the President of the Weimar Republic Paul von Hindenburg on 30 January 1933, the Nazi Party began to eliminate political opposition and consolidate power. Hindenburg died on 2 August 1934, and Hitler became dictator by merging
4085-473: The Party and a small number of independents elected. All civilian organisations had their leadership replaced with Nazi sympathisers or party members, and either merged with the Nazi Party or faced dissolution. The Nazi government declared a "Day of National Labor" for May Day 1933, and invited many trade union delegates to Berlin for celebrations. The day after, SA stormtroopers demolished union offices around
4180-468: The Polish Corridor but greatly expanding German territory eastward at the expense of Poland. He expected this time they would be met by force. The Germans reaffirmed their alliance with Italy and signed non-aggression pacts with Denmark, Estonia, and Latvia whilst trade links were formalised with Romania, Norway, and Sweden. Foreign Minister Joachim von Ribbentrop arranged in negotiations with
4275-451: The RAF in what became known as the Battle of Britain , and by the end of October, Hitler realised that air superiority would not be achieved. He permanently postponed the invasion, a plan which the commanders of the German army had never taken entirely seriously. Several historians, including Andrew Gordon , believe the primary reason for the failure of the invasion plan was the superiority of
4370-456: The Royal Navy, not the actions of the RAF. In February 1941, the German Afrika Korps arrived in Libya to aid the Italians in the North African Campaign . On 6 April, Germany launched an invasion of Yugoslavia and Greece . All of Yugoslavia and parts of Greece were subsequently divided between Germany, Hungary, Italy, and Bulgaria. On 22 June 1941, contravening the Molotov–Ribbentrop Pact, about 3.8 million Axis troops attacked
4465-493: The Soviet Union a non-aggression pact, the Molotov–Ribbentrop Pact , signed in August 1939. The treaty also contained secret protocols dividing Poland and the Baltic states into German and Soviet spheres of influence. Germany's wartime foreign policy involved the creation of allied governments controlled directly or indirectly from Berlin. They intended to obtain soldiers from allies such as Italy and Hungary and workers and food supplies from allies such as Vichy France . Hungary
4560-506: The Soviet Union attacked from the east on 17 September. Reinhard Heydrich , chief of the Sicherheitspolizei (SiPo; Security Police) and Sicherheitsdienst (SD; Security Service), ordered on 21 September that Polish Jews should be rounded up and concentrated into cities with good rail links. Initially the intention was to deport them further east, or possibly to Madagascar . Using lists prepared in advance , some 65,000 Polish intelligentsia, noblemen, clergy, and teachers were murdered by
4655-441: The Soviet Union in 1941, Nazi Germany attempted to implement the Generalplan Ost and Hunger Plan , as part of its war of extermination in Eastern Europe. The Soviet resurgence and entry of the US into the war meant Germany lost the initiative in 1943 and by late 1944 had been pushed back to the 1939 border. Large-scale aerial bombing of Germany escalated and the Axis powers were driven back in Eastern and Southern Europe. Germany
4750-443: The Soviet Union. In addition to Hitler's stated purpose of acquiring Lebensraum , this large-scale offensive—codenamed Operation Barbarossa —was intended to destroy the Soviet Union and seize its natural resources for subsequent aggression against the Western powers. The reaction among Germans was one of surprise and trepidation as many were concerned about how much longer the war would continue or suspected that Germany could not win
4845-419: The United States. Food was in short supply in the conquered areas of the Soviet Union and Poland, as the retreating armies had burned the crops in some areas, and much of the remainder was sent back to the Reich. In Germany, rations were cut in 1942. In his role as Plenipotentiary of the Four Year Plan , Hermann Göring demanded increased shipments of grain from France and fish from Norway. The 1942 harvest
SECTION 50
#17327914649434940-444: The Weimar Republic, rejection of the Treaty of Versailles, radical antisemitism , and anti- Bolshevism . They promised a strong central government, increased Lebensraum ("living space") for Germanic peoples, formation of a national community based on race, and racial cleansing via the active suppression of Jews , who would be stripped of their citizenship and civil rights. The Nazis proposed national and cultural renewal based upon
5035-416: The annular wing (commonly known as the cylindrical or ring wing ), the joined wing, the box wing, and spiroid tip devices. Like many wingtip devices , the closed wing aims to reduce the wasteful effects associated with wingtip vortices which occur at the tips of conventional wings. Although the closed wing has no unique claim on such benefits, many closed wing designs do offer structural advantages over
5130-451: The blockade, imports into Germany declined by 80 per cent. To safeguard Swedish iron ore shipments to Germany, Hitler ordered the invasion of Denmark and Norway , which began on 9 April. Denmark fell after less than a day , while most of Norway followed by the end of the month. By early June, Germany occupied all of Norway . Against the advice of many of his senior military officers, in May 1940 Hitler ordered an attack on France and
5225-400: The business community, President Paul von Hindenburg appointed Hitler as Chancellor of Germany on 30 January 1933. This event is known as the Machtergreifung ("seizure of power"). On the night of 27 February 1933, the Reichstag building was set afire . Marinus van der Lubbe , a Dutch communist, was found guilty of starting the blaze. Hitler proclaimed that the arson marked the start of
5320-403: The cases) between a configuration with a substantial gap (the second entry in each row) and the corresponding closed configuration (the third entry in each row). This is because the optimum lift loading calculated for the quasi-closed cases is very small over the upper centre section, and that part of the wing can be removed with little change in lift or drag. The lift distributions shown here for
5415-408: The centre. A C-wing can achieve very nearly the same induced-drag performance as a corresponding box wing, as shown by the calculations illustrated below. Each of the first three rows in the illustration shows a different C-wing configuration as it is taken through a sequence of theoretical induced-drag calculations in which the wingtips are brought closer together, culminating in the limiting case on
5510-445: The churches. The Nazi regime abolished the symbols of the Weimar Republic—including the black, red, and gold tricolour flag —and adopted reworked symbolism. The previous imperial black, white, and red tricolour was restored as one of Germany's two official flags; the second was the swastika flag of the Nazi Party, which became the sole national flag in September 1935. The Party anthem " Horst-Wessel-Lied " ("Horst Wessel Song") became
5605-411: The country; all trade unions were forced to dissolve and their leaders were arrested. The Law for the Restoration of the Professional Civil Service , passed in April, removed from their jobs all teachers, professors, judges, magistrates, and government officials who were Jewish or whose commitment to the party was suspect. This meant the only non-political institutions not under control of the Nazis were
5700-427: The development and testing of several prototypes, and the design was abandoned. Later proposals for closed-wing designs included the Convair Model 49 Advanced Aerial Fire Support System (AAFSS) and the 1980s Lockheed "Ring Wing" concept. Dr. Julian Wolkovitch continued to develop the idea in the 1980s, claiming it was an efficient structural arrangement in which the horizontal tail provided structural support for
5795-510: The electorate in a plebiscite . Most Germans were relieved that the conflicts and street fighting of the Weimar era had ended. They were deluged with propaganda orchestrated by Minister of Public Enlightenment and Propaganda Joseph Goebbels , who promised peace and plenty for all in a united, Marxist-free country without the constraints of the Versailles Treaty. The Nazi Party obtained and legitimised power through its initial revolutionary activities, then through manipulation of legal mechanisms,
SECTION 60
#17327914649435890-471: The end of 1939 in an attempt to destroy Poland's identity as a nation. Soviet forces advanced into Finland in the Winter War , and German forces saw action at sea. But little other activity occurred until May, so the period became known as the " Phoney War ". From the start of the war, a British blockade on shipments to Germany affected its economy. Germany was particularly dependent on foreign supplies of oil, coal, and grain. Thanks to trade embargoes and
5985-413: The engine to 600 rpm. The transmission arrangement accounted for 100 kg of the aircraft's 400 kg weight. The undercarriage consisted of a pair of long floats under the front wing cell and a third below the aft wing cell. Blériot and Voisin attempted to fly it from the Lac d'Engheim in May 1906, but the machine would not become airborne. In October they made major changes to the design, adding
6080-488: The establishment of the Nuremberg Laws of 1935, which stripped them of their basic rights. The Nazis would take from the Jews their wealth, their right to intermarry with non-Jews, and their right to occupy many fields of labour (such as law, medicine, or education). Eventually the Nazis declared the Jews as undesirable to remain among German citizens and society. As early as February 1933, Hitler announced that rearmament must begin, albeit clandestinely at first, as to do so
6175-473: The execution of more than 4,900 people. The failed Ardennes Offensive (16 December 1944 – 25 January 1945) was the last major German offensive on the western front, and Soviet forces entered Germany on 27 January. Hitler's refusal to admit defeat and his insistence that the war be fought to the last man led to unnecessary death and destruction in the war's closing months. Through his Justice Minister Otto Georg Thierack , Hitler ordered that anyone who
6270-859: The failed German offensive at the Battle of Kursk in the summer of 1943. By the end of 1943, the Germans had lost most of their eastern territorial gains. In Egypt, Field Marshal Erwin Rommel 's Afrika Korps were defeated by British forces under Field Marshal Bernard Montgomery in October 1942. The Allies landed in Sicily in July 1943 and were on the Italian peninsula by September. Meanwhile, American and British bomber fleets based in Britain began operations against Germany . Many sorties were intentionally given civilian targets in an effort to destroy German morale. The bombing of aircraft factories as well as Peenemünde Army Research Center , where V-1 and V-2 rockets were being developed and produced, were also deemed particularly important. German aircraft production could not keep pace with losses, and without air cover
6365-430: The floats and added a wheeled undercarriage. On 12 November 1906 further attempts at flight were made at the Parc de Bagatelle , but the aircraft hit an obstacle during a ground run and was damaged beyond repair. To underline this failure, Voisin and Blériot were then to witness Santos-Dumont's successful flight in the 14-bis , made at Bagatelle the same day. After this failure the partnership between Voisin and Blériot
6460-404: The forward annular wing with a biplane and added a canard foreplane to make it a three-surface aircraft . It was able to leave the ground in small hops before being damaged beyond repair. Based on the work of G.J.A. Kitchen, Cedric Lee and G. Tilghman Richards built and flew several annular-wing aeroplanes in which the fore and aft segments were on the same level. The first was a biplane. It
6555-617: The future. Food supplies were precarious; production dropped in most of Europe. Famine was experienced in many occupied countries. Hitler's peace overtures to the new British Prime Minister Winston Churchill were rejected in July 1940. Grand Admiral Erich Raeder had advised Hitler in June that air superiority was a pre-condition for a successful invasion of Britain , so Hitler ordered a series of aerial attacks on Royal Air Force (RAF) airbases and radar stations, as well as nightly air raids on British cities, including London , Plymouth , and Coventry . The German Luftwaffe failed to defeat
6650-407: The need for Germany to secure its frontiers. Schuschnigg scheduled a plebiscite regarding Austrian independence for 13 March, but Hitler sent an ultimatum to Schuschnigg on 11 March demanding that he hand over all power to the Austrian Nazi Party or face an invasion. German troops entered Austria the next day, to be greeted with enthusiasm by the populace. The Republic of Czechoslovakia was home to
6745-431: The plan, as Germany was not yet ready for war. The crisis led to war preparations by Britain, Czechoslovakia, and France (Czechoslovakia's ally). Attempting to avoid war, British Prime Minister Neville Chamberlain arranged a series of meetings, the result of which was the Munich Agreement , signed on 29 September 1938. The Czechoslovak government was forced to accept the Sudetenland's annexation into Germany. Chamberlain
6840-551: The powers of the chancellery and presidency. A 1934 German referendum confirmed Hitler as sole Führer (leader). Power was centralised in Hitler's person, and his word became the highest law. The government was not a coordinated, cooperating body, but rather a collection of factions struggling to amass power. In the midst of the Great Depression , the Nazis restored economic stability and ended mass unemployment using heavy military spending. Financed by deficit spending ,
6935-606: The provisions of the Reichstag Fire Decree to keep several Social Democratic deputies from attending, and the Communists had already been banned. The Enabling Act would subsequently serve as the legal foundation for the dictatorship the Nazis established. On 10 May, the government seized the assets of the Social Democrats, and they were banned on 22 June. On 21 June, the SA raided the offices of
7030-481: The quasi-closed cases look different from those typically shown for box wings in the classical literature (see Durand, figure 81, for example). The classical solution in Durand was obtained by a conformal-mapping analysis that happened to be formulated in a way that led to equal upward loadings on the horizontal panels of the box. But the optimum lift distribution is not unique. A constant inward loading (corresponding to
7125-712: The realms of studies and conceptual designs, as the engineering challenges of developing a strong, self-supporting closed wing for use in the large airliners which would benefit most from increases in efficiency have yet to be overcome. The closed wing is also used in water, for surfboard fins of the type also known as the tunnel fin . During 2011, the Environmentally Responsible Aviation Project at NASA 's Aeronautics Research Mission Directorate invited study proposals towards meeting NASA's goal of reducing future aircraft fuel consumption by 50% compared to 1998. Lockheed Martin proposed
7220-589: The regime undertook extensive public works projects, including the Autobahnen (motorways) and a massive secret rearmament program , forming the Wehrmacht (armed forces). The return to economic stability boosted the regime's popularity. Germany made increasingly aggressive territorial demands, threatening war if they were not met. Germany seized Austria in the Anschluss of 1938, and demanded and received
7315-793: The regime. The Germanic peoples were considered by the Nazis to be the " master race ", the purest branch of the Aryan race. Jews , Romani people , Slavs , homosexuals , liberals , socialists , communists , other political opponents, Jehovah's Witnesses , Freemasons , those who refused to work , and other "undesirables" were imprisoned, deported , or murdered. Christian churches and citizens that opposed Hitler's rule were oppressed and leaders imprisoned. Education focused on racial biology , population policy, and fitness for military service. Career and educational opportunities for women were curtailed . Nazi Propaganda Ministry disseminated films, antisemitic canards , and organized mass rallies; fostering
7410-407: The right, where the gap has been taken to zero and the configuration has become a closed box wing (referred to as the "Quasi-closed C-wing" because the calculations were carried out in the limit as the gap went to zero). The parameter ε is the optimal aerodynamic efficiency ratio and represents the ratio between the aerodynamic efficiency of a given non-planar wing and the corresponding efficiency of
7505-523: The stock market in the United States crashed in 1929 , the effect in Germany was dire. Millions were thrown out of work and several major banks collapsed. Hitler and the Nazis prepared to take advantage of the emergency to gain support for their party. They promised to strengthen the economy and provide jobs. Many voters decided the Nazi Party was capable of restoring order, quelling civil unrest, and improving Germany's international reputation. After
7600-529: The total German war dead range from 5.5 to 6.9 million persons. A study by German historian Rüdiger Overmans puts the number of German military dead and missing at 5.3 million, including 900,000 men conscripted from outside of Germany's 1937 borders. Richard Overy estimated in 2014 that about 353,000 civilians were killed in Allied air raids. Other civilian deaths include 300,000 Germans (including Jews) who were victims of Nazi political, racial, and religious persecution and 200,000 who were murdered in
7695-473: The use of police powers, and by taking control of the state and federal institutions. The first major Nazi concentration camp , initially for political prisoners, was opened at Dachau in 1933. Hundreds of camps of varying size and function were created by the end of the war. Beginning in April 1933, scores of measures defining the status of Jews and their rights were instituted. These measures culminated in
7790-494: The war drew to a close. Suicide rates in Germany increased, particularly in areas where the Red Army was advancing. Among soldiers and party personnel, suicide was often deemed an honourable and heroic alternative to surrender. First-hand accounts and propaganda about the uncivilised behaviour of the advancing Soviet troops caused panic among civilians on the Eastern Front, especially women, who feared being raped. More than
7885-426: The wing as well as acting as a stabilizing surface. The Spiroid winglet , a design currently under development by Aviation Partners , is a closed wing surface mounted at the end of a conventional wing. The company announced that the winglets fitted to a Gulfstream II reduced fuel consumption in the cruise phase by over 10%. The Finnish company FlyNano flew a prototype of a closed wing ultralight aircraft ,
7980-411: The wingspan below the 80-meter limit at most airports, but a closed wing with optimal wingspan could be shorter than that of conventional designs, potentially allowing even larger aircraft to use the current infrastructure. The C-wing is a theoretical configuration in which much of the upper centre section of a box wing is removed, creating a wing that folds up and over at the tips but does not rejoin in
8075-494: Was a powerful ally, the relationship was distant, with little co-ordination or co-operation. For example, Germany refused to share their formula for synthetic oil from coal until late in the war. Germany invaded Poland and captured the Free City of Danzig on 1 September 1939, beginning World War II in Europe. Honouring their treaty obligations, Britain and France declared war on Germany two days later. Poland fell quickly, as
8170-562: Was conquered by the Soviet Union from the east and the other Allies from the west, and capitulated on 8 May 1945. Hitler's refusal to admit defeat led to massive destruction of German infrastructure and additional war-related deaths in the closing months of the war. The Allies initiated a policy of denazification and put many of the surviving Nazi leadership on trial for war crimes at the Nuremberg trials . Common English terms for
8265-482: Was dissolved, both men preferring to concentrate on their own design ideas. Voisin set up Appareils d'Aviation Les Frères Voisin with his brother, and Blériot went on to build further experimental aircraft in collaboration with various other people. General characteristics Annular wing A closed wing is a wing that effectively has two main planes which merge at their ends so that there are no conventional wing tips . Closed wing designs include
8360-417: Was dropped. Germany was now a totalitarian state with Hitler at its head. As head of state, Hitler became Supreme Commander of the armed forces. The new law provided an altered loyalty oath for servicemen so that they affirmed loyalty to Hitler personally rather than the office of supreme commander or the state. On 19 August, the merger of the presidency with the chancellorship was approved by 90 per cent of
8455-543: Was followed by a series of monoplanes, the last of the line remaining in use until 1914. In 1944, the German designer Ernst Heinkel began working on an annular-wing VTOL multirole single-seater called the Lerche , but the project was soon abandoned. During the 1950s, the French company SNECMA developed the Coléoptère , a single-person VTOL annular wing aircraft. The aircraft proved dangerously unstable despite
8550-692: Was good, and food supplies remained adequate in Western Europe. Germany and Europe as a whole were almost totally dependent on foreign oil imports. In an attempt to resolve the shortage, in June 1942 Germany launched Fall Blau ("Case Blue"), an offensive against the Caucasian oilfields. The Red Army launched a counter-offensive on 19 November and encircled the Axis forces, who were trapped in Stalingrad on 23 November. Göring assured Hitler that
8645-526: Was greeted with cheers when he landed in London, saying the agreement brought "peace for our time". Austrian and Czech foreign exchange reserves were seized by the Nazis, as were stockpiles of raw materials such as metals and completed goods such as weaponry and aircraft, which were shipped to Germany. The Reichswerke Hermann Göring industrial conglomerate took control of steel and coal production facilities in both countries. In January 1934, Germany signed
8740-497: Was in violation of the Versailles Treaty. On 17 May 1933, Hitler gave a speech before the Reichstag outlining his desire for world peace and accepted an offer from American President Franklin D. Roosevelt for military disarmament, provided the other nations of Europe did the same. When the other European powers failed to accept this offer, Hitler pulled Germany out of the World Disarmament Conference and
8835-432: Was not prepared to fight should be court-martialed, and thousands of people were executed. In many areas, people surrendered to the approaching Allies in spite of exhortations of local leaders to continue to fight. Hitler ordered the destruction of transport, bridges, industries, and other infrastructure—a scorched earth decree—but Armaments Minister Albert Speer prevented this order from being fully carried out. During
8930-489: Was succeeded by Grand Admiral Karl Dönitz as Reich President and Goebbels as Reich Chancellor. Goebbels and his wife Magda committed suicide the next day after murdering their six children . Between 4 and 8 May 1945, most of the remaining German armed forces unconditionally surrendered. The German Instrument of Surrender was signed 8 May, marking the end of the Nazi regime and the end of World War II in Europe . Popular support for Hitler almost completely disappeared as
9025-682: Was the fourth nation to join the Axis, signing the Tripartite Pact on 27 September 1940. Bulgaria signed the pact on 17 November. German efforts to secure oil included negotiating a supply from their new ally, Romania , who signed the Pact on 23 November, alongside the Slovak Republic. By late 1942, there were 24 divisions from Romania on the Eastern Front, 10 from Italy, and 10 from Hungary. Germany assumed full control in France in 1942, Italy in 1943, and Hungary in 1944. Although Japan
#942057