Akaflieg is an abbreviation for Akademische Fliegergruppe , groups of aeronautical engineering students from individual German universities of technology and Technische Hochschulen , pre and postwar, who design aircraft, often gliders.
46-448: Otto Lilienthal published his book Der Vogelflug als Grundlage der Fliegekunst (Birdflight as the Basis of Aviation) in 1889. This described the basics of modern aerodynamics and aircraft construction. Lilienthal then made many successful flights starting in 1891. However attention then shifted to powered flight after World War I . Gliding re-emerged as a sport after the war because
92-609: A 4 metres (13 ft) high shed, in the shape of a tower, on top of it. This way, he obtained a "jumping off" place 10 metres (33 ft) high. The shed served also for storing his apparatus. In 1893, Lilienthal also started to perform gliding attempts in the "Rhinower Berge", at the "Hauptmannsberg" near to Rhinow and later, in 1896, at the "Gollenberg" near to Stölln. In 1894, Lilienthal built an artificial conical hill near his home in Lichterfelde , called Fliegeberg (lit. fly hill). It allowed him to launch his gliders into
138-430: A dozen models of monoplanes , wing flapping aircraft and two biplanes . His gliders were carefully designed to distribute weight as evenly as possible to ensure a stable flight. Lilienthal controlled them by changing the center of gravity by shifting his body, much like modern hang gliders . They were difficult to manoeuvre and had a tendency to pitch down, from which it was difficult to recover. One reason for this
184-667: A fraternal spirit was created that has been maintained to this day. During the Nazi period some Akafliegs escaped regulation for a while through the patronage of the Deutsche Versuchsanstalt für Luftfahrt (DVL) , a forerunner of the present-day German Aerospace Center (DLR) , however shortly before World War II the akafliegs were forced to integrate into the NS-Deutsche Studentenbund (Nazi-students-federation) . The projects at this time mainly had
230-573: A member of the Hanseatic League the same year or in 1483. The town remained small and non-influential, but achieved a measure of wealth and prosperity with its membership. As a town of considerable military importance, it suffered greatly during the Thirty Years' War when Swedish and Imperial troops battled over it across a twenty-year span. Amid this and subsequent wars, it also endured repeated outbreaks of fire and plague. It
276-463: A military application. After the war, the Akafliegs re-formed in 1951, co-ordinated by Interessengemeinschaft Deutscher Akademischer Fliegergruppen e.V. (Idaflieg) . As of 2009 there are ten groups. The aim of the Akafliegs is the development, design and construction of aeroplanes, especially gliders and scientific research into flight. Much of the practical work is done at the summer meetings of
322-445: A reality. Newspapers and magazines published photographs of Lilienthal gliding, favourably influencing public and scientific opinion about the possibility of flying machines becoming practical. Lilienthal's work led to his developing the concept of the modern wing. His flight attempts in 1891 are seen as the beginning of human flight and the " Lilienthal Normalsegelapparat " is considered the first airplane in series production, making
368-536: A street is named in remembrance. The southern parts of the town were ceded to Prussia by the 1720 Treaty of Stockholm , while a smaller section north of the Peene remained Swedish. It was damaged again during the Seven Years' War in the 1750s and 1760s, with its fortifications being effectively dismantled in 1762. Sweden yielded its remaining part of the town in 1815, when all of Western Pomerania became part of
414-567: Is placed a silver globe inscribed with particulars of famous flights. Lilienthal's brother Gustav and the old mechanic and assistant Paul Baylich attended the unveiling ceremony on 10 August 1932 (36 years after Otto's death). Reports of Lilienthal's flights spread in Germany and elsewhere, with photographs appearing in scientific and popular publications. Among those who photographed him were pioneers such as Ottomar Anschütz and American physicist Robert Williams Wood . He soon became known as
460-471: Is the site of man's first flight. Later he made his flight attempts on an artificial hill near Berlin and above all in the Rhinow Hills. In 1891 Lilienthal succeeded with jumps and flights covering a distance of about 25 metres (82 ft). He could use the updraft of a 10-metre-per-second (33 ft/s) wind against a hill to remain stationary with respect to the ground, shouting to a photographer on
506-485: The Akaflieg Frankfurt which is devoted on research of thermals, mountain wave and flight safety. Otto Lilienthal Karl Wilhelm Otto Lilienthal (23 May 1848 – 10 August 1896) was a German pioneer of aviation who became known as the "flying man". He was the first person to make well-documented, repeated, successful flights with gliders , therefore making the idea of heavier-than-air aircraft
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#1732794129740552-550: The Derwitzer Glider , until his death in a gliding crash in 1896. His total flying time was five hours. At the beginning, in the spring of 1891, Lilienthal managed the first jumps and flights on the slope of a sand pit on a hill between the villages of Derwitz and Krielow in Havelland , west of Potsdam ( 52°24′48″N 12°49′22″E / 52.41333°N 12.82278°E / 52.41333; 12.82278 ). This
598-533: The French horn and had a good tenor voice. After marriage, they took up residence in Berlin and had four children: Otto, Anna, Fritz, and Frida. Lilienthal published his famous book Birdflight as the Basis of Aviation in 1889. Lilienthal's greatest contribution was in the development of heavier-than-air flight. He made his flights from an artificial hill he built near Berlin and from natural hills, especially in
644-527: The German Aerospace Center in wind tunnel and flight tests. The results prove that the glider was stable in pitch and roll and can be flown safely at moderate altitudes. In 1989, a Soviet-era Ilyushin IL-62 passenger jet was flown to Gollenberg, and landed in a nearby field. It now serves as a museum of early flight, and has been named 'Lady Agnes', after Lilienthal's wife. The back of
690-559: The Idaflieg in co-operation with the German Aerospace Center (DLR) , while the results of the research are presented at the winter meetings. The Idaflieg also offers many events and courses to its members such as the specification, design and certification of aeroplanes. The quality of additional education provided by the Akafliegs is widely respected and so German glider manufacturers recruit almost exclusively from
736-616: The Maschinenfabrik Otto Lilienthal in Berlin the first airplane production company in the world. He has been referred to as the "father of aviation" and "father of flight". On 9 August 1896, Lilienthal’s glider stalled and he was unable to regain control. Falling from about 15 metres (49 ft), he broke his neck and died the next day. Lilienthal was born on 23 May 1848 in Anklam , Pomerania Province , in
782-584: The Peene river, just 8 km from its mouth in the Kleines Haff , the western part of the Szczecin Lagoon . Anklam has a population of 12,177 (2021) and was the capital of the former Ostvorpommern district. Since September 2011, it has been part of the district of Vorpommern-Greifswald . In the early Middle Ages , there was an important Scandinavian and Wendish settlement in the area near
828-481: The Rhinow region. The filing of a U.S. Patent in 1894 by Lilienthal directed pilots to grip the "bar" for carrying and flying the hang glider. The A-frame of Percy Pilcher and Lilienthal echoes in today's control frame for hang gliders and ultralight aircraft. Working in conjunction with his brother Gustav, Lilienthal made over 2,000 flights in gliders of his design starting in 1891 with his first glider version,
874-553: The Wehrmacht took over the military school and constructed a military prison on the grounds. In September 1942, the FStGA 8 field penal battalion for Allied prisoners-of-war was established and afterwards relocated to the eastern front. Anklam was nearly completely destroyed by several bombing raids of the U.S. Air Force in 1943 and 1944 and in the last days of World War II , when the advancing Soviets burned and leveled most of
920-595: The "51 Heroes of Aviation". A German Air Force tanker, Airbus A310 MRTT registration 10–24, has been named "Otto Lilienthal" in his honour. The Lilium Jet , a prototype German electric vertical take-off and landing (eVTOL) electrically powered airplane and the company which designed it, Lilium GmbH , were named after him. An authentic replica of the Normalsegelapparat made by the Otto Lilienthal Museum have been investigated by
966-628: The "father of flight" as he had successfully controlled a heavier-than-air aircraft in sustained flight. Lilienthal was a member of the Verein zur Förderung der Luftschifffahrt , and regularly detailed his experiences in articles in its journal, the Zeitschrift für Luftschifffahrt und Physik der Atmosphäre , and in the popular weekly publication Prometheus . These were translated in the United States, France and Russia. Many people from around
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#17327941297401012-478: The 1990 reunification of Germany , Anklam became part of the state of Mecklenburg-Vorpommern , re-created at that time. Anklam was a prosperous medieval city but suffered severely during the Thirty Years' War , the Seven Years' War , and the Second World War , as well as from periodic fires. Nonetheless, Anklam has some significant buildings remaining. The 12th-century church of St Mary was rebuilt in
1058-556: The Akafliegs. Members have to devote approximately 150 to 300 man-hours annually in order to be able to fly with the Akafliegs. The cost of flying for these members is usually much lower than at other gliding clubs. American Universities have also implemented programs similar to the Akafliegs but based around the American style of teaching, Penn State 's AERSP 404H is one example of this implementation. There are also academical gliding clubs with other focus than building aircraft, like
1104-600: The German kingdom of Prussia . His parents were Gustav and Caroline, née Pohle. He was baptised in the evangelical-lutheran St. Nicholas church and confirmed in St. Mary's church in Anklam. Lilienthal's middle-class parents had eight children, but only three survived infancy: Otto, Gustav , and Marie. The brothers worked together all their lives on technical, social, and cultural projects. Lilienthal attended grammar school and studied
1150-663: The Otto Lilienthal Museum doubts that these were his last words. Otto Lilienthal was buried at Lankwitz public cemetery in Berlin. Guinness World Records recognizes Otto Lilienthal as the first person recorded to be fatally injured in a glider accident. Lilienthal's research was well known to the Wright brothers , and they credited him as a major inspiration for their decision to pursue manned flight. They abandoned his aeronautical data after two seasons of gliding and began using their own wind tunnel data. Of all
1196-591: The Otto Lilienthal Museum website. The only negatives, preserved in the Deutsches Museum in Munich, were destroyed during World War II . Anklam Anklam ( German pronunciation: [ˈaŋklam] ), formerly known as Tanglim and Wendenburg , is a town in the Western Pomerania region of Mecklenburg-Vorpommern in north-eastern Germany . It is situated on the banks of
1242-559: The Prussian province of Pomerania . In the 19th century, Anklam was connected with Berlin and Stettin ( Szczecin ) by rail and developed its manufacture of linen and woolen goods , leather , beer , and soap . Its 1871 population was 10,739, which had risen to 14,602 by the turn of the century. By the time of the First World War , it possessed a military school and developed iron foundries and sugar factories. In 1939
1288-411: The Rhinow Hills. The day was very sunny and not too hot (about 20 °C, or 68 °F). The first flights were successful, reaching a distance of 250 metres (820 ft) in his normal glider. During the fourth flight Lilienthal's glider pitched upward and then headed down quickly. (It is believed that his glider stalled.) Lilienthal had previously had difficulty in recovering from this position because
1334-474: The aircraft operates as a registry office, decorated for marriages. The jet previously served with East Germany's state airline Interflug . Lilienthal was regularly joined by photographers at his request. Most of them are well known, like Ottomar Anschütz . Lilienthal also took his own photographs of his flying machines after 1891. There are at least 145 known photographs documenting his test flights, some of excellent quality. All of them are available online at
1380-678: The building of powered aircraft was restricted in Germany by the Treaty of Versailles . The main originator of the gliding movement was Oskar Ursinus , who in 1920 organised the first contest, known as the Rhön-Contest, on the Wasserkuppe . Thereafter the contest was held annually. Students of Technische Hochschulen brought gliders which they had developed and built themselves for testing to these contests. An esprit de corps developed known as Rhöngeist . These informal beginnings caused
1426-466: The flare at the end of a flight easier. He speculated that flapping wings of birds might be necessary and had begun work on such a powered aircraft. While his lifelong pursuit was flight, Lilienthal was also an inventor and devised a small engine that worked on a system of tubular boilers . His engine was much safer than the other small engines of the time. This invention gave him the financial freedom to focus on aviation . His brother Gustav (1849–1933)
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1472-685: The flight of birds with his brother Gustav (1849–1933). Fascinated by the idea of manned flight, Lilienthal and his brother made strap-on wings, but failed in their attempts to fly. He attended the regional technical school in Potsdam for two years and trained at the Schwarzkopf Company before becoming a professional design engineer. He later attended the Technische Hochschule in Berlin (now Technische Universität Berlin ). In 1867, Lilienthal began experiments in earnest on
1518-519: The force of air, but interrupted the work to serve in the Franco-Prussian War . Returning to civilian life, he was a staff engineer with several engineering companies and received a patent, his first, for a mining machine. He founded his own company to make boilers and steam engines. On 6 June 1878, Lilienthal married Agnes Fischer, daughter of a deputy. Music brought them together; she was trained in piano and voice while Lilienthal played
1564-522: The formation of groups of engineers at Technische Hochschulen with the aim of scientific and practical education. The first groups were formed in 1920 in Aachen, Darmstadt and Berlin-Charlottenburg, but others soon followed. Many of the first members had been pilots in the German Air Force. However it was the love of flying rather than militarism or nationalism that motivated them. As a result
1610-443: The glider relied on weight shift which was difficult to achieve when pointed at the ground. His attempts failed and he fell from a height of about 15 metres (49 ft), while still in the glider. Paul Beylich, Lilienthal's glider mechanic, transported him by horse-drawn carriage to Stölln , where he was examined by a physician. Lilienthal had a fracture of the third cervical vertebra and soon became unconscious. Later that day he
1656-548: The ground to manoeuvre into the best position for a photo. In 1893, in the Rhinow Hills, he was able to achieve flight distances as long as 250 metres (820 ft). This record remained unbeaten for him or anyone else at the time of his death. Lilienthal did research in accurately describing the flight of birds, especially storks , and used polar diagrams for describing the aerodynamics of their wings. He made many experiments in an attempt to gather reliable aeronautical data. During his short flying career, Lilienthal developed
1702-567: The men who attacked the flying problem in the 19th century, Otto Lilienthal was easily the most important. ... It is true that attempts at gliding had been made hundreds of years before him, and that in the nineteenth century, Cayley , Spencer , Wenham , Mouillard , and many others were reported to have made feeble attempts to glide, but their failures were so complete that nothing of value resulted. Before its closure in 2020, Berlin's then busiest airport, Berlin Tegel "Otto Lilienthal" Airport ,
1748-598: The present town now known as Altes Lager Menzlin . Anklam proper began as an associated Wendish fortress. In the Middle Ages the town was a part of the Duchy of Pomerania . During the German expansion eastwards , the abandoned fortress was developed into a settlement named Tanglim after its new founder. The site possesses importance as the head of navigation on the Peene. It was elevated to town status in 1244 and became
1794-681: The town. During the final stages of the war, in February 1945, the German-perpetrated death march of Allied POWs from the Stalag XX-B POW camp passed through the town. After the war, Anklam became part of the East German state of Mecklenburg-Vorpommern , and after the dissolution of the province it was part of Bezirk Neubrandenburg from 1952 to 1990. The town was rebuilt in the rather uniform socialist style. After
1840-495: The wind no matter which direction it was coming from. The hill was 15 metres (49 ft) high. There was a regular crowd of people that were interested in seeing his gliding experiments. In 1932, the Fliegeberg was redesigned by a Berlin architect Fritz Freymüller as a memorial to Lilienthal. On top of the hill was built a small temple-like construction, consisting of pillars supporting a slightly sloping round roof. Inside
1886-476: The world came to visit him, including Samuel Pierpont Langley from the United States, Russian Nikolai Zhukovsky , Englishman Percy Pilcher and Austrian Wilhelm Kress . Zhukovsky wrote that Lilienthal's flying machine was the most important invention in the aviation field. Lilienthal corresponded with many people, among them Octave Chanute , James Means, Alois Wolfmüller and other flight pioneers . On 9 August 1896, Lilienthal went, as on previous weekends, to
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1932-563: Was occupied by imperial forces from 1627 to 1630, and thereafter by Swedish forces . After the war, Anklam became part of Swedish Pomerania in 1648. In 1676, it was captured by Frederick William of Brandenburg . In 1713, Anklam was looted by soldiers of the Tsardom of Russia . That it was not burned to the ground, as ordered by Peter the Great , was in large part due to the resistance of Christian Thomesen Carl ("Carlson"), after whom
1978-558: Was living in Australia at the time, and Lilienthal did not engage in aviation experiments until his brother's return in 1885. There are 25 known Lilienthal patents. Lilienthal performed his first gliding attempts in the spring of 1891 at the so-called "Spitzer Berg" near to the villages of Krielow and Derwitz, west of Potsdam. In 1892, Lilienthal's training area was a hill formation called "Maihöhe" in Steglitz , Berlin. He built
2024-554: Was named after him. In September 1909, Orville Wright was in Germany making demonstration flights at Tempelhof aerodrome. He paid a call to Lilienthal's widow and, on behalf of himself and Wilbur, paid tribute to Lilienthal for his influence on aviation and on their own initial experiments in 1899. In 1972, Lilienthal was inducted into the International Air & Space Hall of Fame . In 2013, American aviation magazine Flying ranked Lilienthal No. 19 on their list of
2070-439: Was that he held the glider by his shoulders, rather than hanging from it like a modern hang glider. Only his legs and lower body could be moved, which limited the amount of weight shift he could achieve. Lilienthal made many attempts to improve stability with varying degrees of success. These included making a biplane which halved the wing span for a given wing area, and by having a hinged tailplane that could move upwards to make
2116-521: Was transported in a cargo train to Lehrter train station in Berlin , and the next morning to the clinic of Ernst von Bergmann , one of the most famous and successful surgeons in Europe at the time. Lilienthal died there a few hours later (about 36 hours after the crash). There are differing accounts of Lilienthal's last words. A popular account, inscribed on his tombstone, is " Opfer müssen gebracht werden! " ("Sacrifices must be made!"). The director of
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