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Letov LF-107 Luňák

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The LF-107 Luňák (English: Kite ) is a Czech aerobatic glider designed by Prague -based company Rudý Letov in the late 1940s. The design was developed within a prolific group of aeronautical engineers and sailplane pilots, including K. Dlouhý (later author of LET L-13 Blaník ), J. Matejček, and B. Boček, led by chief designer Vladimír Štros.

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56-557: The first flight of the prototype took place on June 25, 1948, and a second prototype flew in July. The prototype participated later in the same year in aerobatic competition in Grenchen , Switzerland , and in Ziar , Poland in 1949, where its good aerobatic and gliding characteristics drew considerable attention. Unfortunately, serial production was disrupted by geopolitical developments, as

112-665: A Bar Gules in the Chief a demi-Eagle Sable displayed addextré of the Sun-in-splendour and senestré of a Crescent Argent in the Base seven Towers three and four Gules (for Transylvania ); enté en point Gules a double-headed Eagle proper on a Peninsula Vert holding a Vase pouring Water into the Sea Argent beneath a Crown proper with bands Azure (for Fiume ); over all an escutcheon Barry of eight Gules and Argent impaling Gules on

168-668: A Mount Vert a Crown Or issuant therefrom a double-Cross Argent (for Hungary ) . The field of a shield in heraldry can be divided into more than one tincture , as can the various heraldic charges . Many coats of arms consist simply of a division of the field into two contrasting tinctures. These are considered divisions of a shield, so the rule of tincture can be ignored. For example, a shield divided azure and gules would be perfectly acceptable. A line of partition may be straight or it may be varied. The variations of partition lines can be wavy, indented, embattled, engrailed, nebuly , or made into myriad other forms; see Line (heraldry) . In

224-506: A chief undé and a saltire undé . Full descriptions of shields range in complexity, from a single word to a convoluted series describing compound shields: Quarterly I. Azure three Lions' Heads affronté Crowned Or (for Dalmatia ); II. chequy Argent and Gules (for Croatia ); III. Azure a River in Fess Gules bordered Argent thereon a Marten proper beneath a six-pointed star Or (for Slavonia ); IV. per Fess Azure and Or over all

280-660: A former hill castle , are located above this village. In the 2015 federal election , the most popular party was the SVP which received 32.9% of the vote. The other parties were the SP (22.6%), the FDP (19.5%), the CVP (9.1%), BDP 5.4%, glp 4.8%, Greens 2.9%, and the DPS 1.0%. Although Grenchen is a small city, it has its own airport, Grenchen Airfield , with facilities for the transport of goods. It

336-478: A pattern of vertical (palewise) stripes is called paly . A pattern of diagonal stripes may be called bendy or bendy sinister , depending on the direction of the stripes. Other variations include chevrony , gyronny and chequy . Wave shaped stripes are termed undy . For further variations, these are sometimes combined to produce patterns of barry-bendy , paly-bendy , lozengy and fusilly . Semés, or patterns of repeated charges, are also considered variations of

392-553: A six or more room apartment cost an average of 1477.07 CHF (US$ 1180, £660, €950). The average apartment price in Grenchen was 77.3% of the national average of 1116 CHF. The vacancy rate for the municipality in 2010 was 2.38%. The historical population is given in the following chart: The entire village of Grenchen is part of the Inventory of Swiss Heritage Sites . The ruins of Burg Grenchen , also known as Bettleschloss ,

448-571: A total of 7,532 households that answered this question, 38.6% were households made up of just one person and there were 55 adults who lived with their parents. Of the rest of the households, there were 2,275 married couples without children and 1,741 married couples with children. There were 355 single parents with a child or children. There were 73 households that were made up of unrelated people and 123 households that were made up of some sort of institution or another form of collective housing. In 2000 , there were 1,336 single family homes (or 48.4% of

504-639: A verbal description) are not to be confused with the noun emblazonment , or the verb to emblazon , both of which relate to the graphic representation of a coat of arms or heraldic device. The word blazon is derived from French blason , ' shield ' . It is found in English by the end of the 14th century. Formerly, heraldic authorities believed that the word was related to the German verb blasen ' to blow (a horn) ' . Present-day lexicographers reject this theory as conjectural and disproved. Blazon

560-505: Is also the specialized language in which a blazon is written, and, as a verb, the act of writing such a description. Blazonry is the art, craft or practice of creating a blazon. The language employed in blazonry has its own vocabulary , grammar and syntax , which becomes essential for comprehension when blazoning a complex coat of arms. Other armorial objects and devices – such as badges , banners , and seals – may also be described in blazon. The noun and verb blazon (referring to

616-402: Is drawn with straight lines, but each may be indented, embattled, wavy, engrailed, or otherwise have their lines varied. A charge is any object or figure placed on a heraldic shield or on any other object of an armorial composition. Any object found in nature or technology may appear as a heraldic charge in armory. Charges can be animals, objects, or geometric shapes. Apart from the ordinaries,

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672-401: Is four, but the principle has been extended to very large numbers of "quarters". The third common mode of marshalling is with an inescutcheon , a small shield placed in front of the main shield. The field of a shield, or less often a charge or crest, is sometimes made up of a pattern of colours, or variation . A pattern of horizontal (barwise) stripes, for example, is called barry , while

728-412: Is generally designed to eliminate ambiguity of interpretation, to be as concise as possible, and to avoid repetition and extraneous punctuation. English antiquarian Charles Boutell stated in 1864: Heraldic language is most concise, and it is always minutely exact, definite, and explicit; all unnecessary words are omitted, and all repetitions are carefully avoided; and, at the same time, every detail

784-522: Is mostly used by private pilots and parachutists, but also for business travel. The freeway A5 and a connection to Grenchen lie in the vicinity of the airport. Two railway stations, ( Grenchen Nord on the Basel-Biel line and Grenchen Süd on the Geneva-Zürich line), provide an excellent connection to the city on the rail network. The Grenchen Tunnel , an 8.5 km long railroad tunnel that

840-550: Is specified with absolute precision. The nomenclature is equally significant, and its aim is to combine definitive exactness with a brevity that is indeed laconic . However, John Brooke-Little , Norroy and Ulster King of Arms , wrote in 1985: "Although there are certain conventions as to how arms shall be blazoned ... many of the supposedly hard and fast rules laid down in heraldic manuals [including those by heralds] are often ignored." A given coat of arms may be drawn in many different ways, all considered equivalent and faithful to

896-593: Is the municipality's football club. Grenchen has a velodrome, Velodrome Suisse . It hosted the 2015 UEC European Track Championships ., during which a new world record was set in the Ladies' 500m Time Trials by Anastasiia Voinova of Russia. From the 2000 census , 5,654 or 35.5% were Roman Catholic , while 5,754 or 36.1% belonged to the Swiss Reformed Church . Of the rest of the population, there were 154 members of an Orthodox church (or about 0.97% of

952-478: Is to adhere to the feminine singular form, for example: a chief undée and a saltire undée , even though the French nouns chef and sautoir are in fact masculine. Efforts have been made to ignore grammatical correctness, for example by J. E. Cussans , who suggested that all French adjectives should be expressed in the masculine singular, without regard to the gender and number of the nouns they qualify, thus

1008-567: Is used for agricultural purposes, while 10.42 km (4.02 sq mi) or 40.1% is forested. Of the rest of the land, 5.39 km (2.08 sq mi) or 20.7% is settled (buildings or roads), 0.34 km (0.13 sq mi) or 1.3% is either rivers or lakes and 0.05 km (12 acres) or 0.2% is unproductive land. Of the built up area, industrial buildings made up 2.2% of the total area while housing and buildings made up 9.7% and transportation infrastructure made up 6.8%. while parks, green belts and sports fields made up 1.4%. Out of

1064-557: The Wakker Prize for architectural heritage. Jura-Sternwarte Grenchen is located at Grenchen. Around 1000 AD, the local barons built a castle on the local cliff that was inhabited for three centuries. The name Grenchen was first documented in 1131 as Granechun . The name comes from the gallo-romanic graneca , meaning by the granary . Grenchen has an area, as of 2009 , of 26.01 square kilometers (10.04 sq mi). Of this area, 9.85 km (3.80 sq mi) or 37.9%

1120-517: The canton of Solothurn in Switzerland. It is located at the foot of the Jura mountains between Solothurn and Biel/Bienne , approximately 25 km (16 mi) north of Bern . With over 16,000 inhabitants, it is one of the larger towns of the canton of Solothurn. The city is well known for its watch industry, that has been present for more than 150 years. Grenchen was the 2008 winner of

1176-605: The hamlet of Staad along the Aare river at an elevation of 430 m (1,410 ft) to the first mountain range of the Jura Mountains , the Oberer Grenchenberg at 1,348 m (4,423 ft). The blazon of the municipal coat of arms is Gules a Ploughshare Argent. Grenchen has a population (as of December 2020 ) of 17,577. As of 2008 , 28.7% of the population are resident foreign nationals. Over

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1232-434: The inescutcheon , the orle , the tressure, the double tressure, the bordure , the chief , the canton , the label , and flaunches . Ordinaries may appear in parallel series, in which case blazons in English give them different names such as pallets, bars, bendlets, and chevronels. French blazon makes no such distinction between these diminutives and the ordinaries when borne singly. Unless otherwise specified an ordinary

1288-414: The primary economic sector and about 36 businesses involved in this sector. 5,906 people were employed in the secondary sector and there were 217 businesses in this sector. 4,197 people were employed in the tertiary sector , with 544 businesses in this sector. There were 7,988 residents of the municipality who were employed in some capacity, of which females made up 43.8% of the workforce. In 2008 ,

1344-499: The 2010–2011 school year, there were a total of 1,309 students in the Grenchen school system. The education system in the Canton of Solothurn allows young children to attend two years of non-obligatory Kindergarten . During that school year, there were 276 children in kindergarten. The canton's school system requires students to attend six years of primary school , with some of the children attending smaller, specialized classes. In

1400-482: The French form is used, a problem may arise as to the appropriate adjectival ending, determined in normal French usage by gender and number. "To describe two hands as appaumées , because the word main is feminine in French, savours somewhat of pedantry. A person may be a good armorist, and a tolerable French scholar, and still be uncertain whether an escallop-shell covered with bezants should be blazoned as bezanté or bezantée". The usual convention in English heraldry

1456-560: The blazon, just as the letter "A" may be printed in many different fonts while still being the same letter. For example, the shape of the escutcheon is almost always immaterial, with very limited exceptions (e.g., the coat of arms of Nunavut , for which a round shield is specified). The main conventions of blazon are as follows: Because heraldry developed at a time when English clerks wrote in Anglo-Norman French , many terms in English heraldry are of French origin. Some of

1512-399: The details of the syntax of blazon also follow French practice: thus, adjectives are normally placed after nouns rather than before. A number of heraldic adjectives may be given in either a French or an anglicised form: for example, a cross pattée or a cross patty ; a cross fitchée or a cross fitchy . In modern English blazons, the anglicised form tends to be preferred. Where

1568-470: The early days of heraldry, very simple bold rectilinear shapes were painted on shields. These could be easily recognized at a long distance and could be easily remembered. They therefore served the main purpose of heraldry: identification. As more complicated shields came into use, these bold shapes were set apart in a separate class as the "honorable ordinaries". They act as charges and are always written first in blazon. Unless otherwise specified they extend to

1624-422: The edges of the field. Though ordinaries are not easily defined, they are generally described as including the cross , the fess , the pale , the bend , the chevron , the saltire , and the pall . There is a separate class of charges called sub-ordinaries which are of a geometrical shape subordinate to the ordinary. According to Friar, they are distinguished by their order in blazon. The sub-ordinaries include

1680-532: The factory was charged with production of MiG-15 , MiG-19 , MiG-21F aircraft, and access to Western civil export markets were progressively hampered by the emergence of the Iron Curtain . Therefore, only 75 examples of the Luňák were produced. In 1950, a variant with simpler construction and a revised cockpit, among other changes, was developed. This LF-107 Luňák of wooden construction designated Letov VT-7 under

1736-414: The field per pale and putting one whole coat in each half. Impalement replaced the earlier dimidiation  – combining the dexter half of one coat with the sinister half of another – because dimidiation can create ambiguity. A more versatile method is quartering , division of the field by both vertical and horizontal lines. As the name implies, the usual number of divisions

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1792-405: The field. The Rule of tincture applies to all semés and variations of the field. Cadency is any systematic way to distinguish arms displayed by descendants of the holder of a coat of arms when those family members have not been granted arms in their own right. Cadency is necessary in heraldic systems in which a given design may be owned by only one person at any time, generally the head of

1848-516: The forested land, 38.5% of the total land area is heavily forested and 1.5% is covered with orchards or small clusters of trees. Of the agricultural land, 25.8% is used for growing crops and 6.0% is pastures and 5.3% is used for alpine pastures. All the water in the municipality is flowing water. The municipality is the capital of the Lebern District. It is the second largest city in the Canton of Solothurn. The municipality stretches from

1904-438: The last 10 years (1999–2009 ) the population has changed at a rate of -1.3%. Most of the population (as of 2000 ) speaks German (13,033 or 81.8%), with Italian being second most common (1,022 or 6.4%) and French being third (460 or 2.9%). There are 16 people who speak Romansh . As of 2008 , the gender distribution of the population was 49.2% male and 50.8% female. The population was made up of 5,328 Swiss men (33.3% of

1960-409: The left hind foot). Another frequent position is passant , or walking, like the lions of the coat of arms of England . Eagles are almost always shown with their wings spread, or displayed. A pair of wings conjoined is called a vol . In English heraldry the crescent , mullet , martlet , annulet , fleur-de-lis , and rose may be added to a shield to distinguish cadet branches of a family from

2016-670: The military training system was instrumental in the development of gliding and aerobatics in the Czech Republic . The LF-107 was also used for aerobatic training in the Soviet Union , Bulgaria , Romania and Poland. The Letov XLF-207 Laminar, a derivative of the Luňák, was the first glider in the world with a laminar flow wing. Its maiden flight took place in Praha Letnany in August 1951. Research into laminar flow wings

2072-420: The most frequent charges are the cross – with its hundreds of variations – and the lion and eagle . Other common animals are stags , wild boars , martlets , and fish . Dragons , bats , unicorns , griffins , and more exotic monsters appear as charges and as supporters . Animals are found in various stereotyped positions or attitudes . Quadrupeds can often be found rampant (standing on

2128-403: The municipality and 3,273 workers who commuted away. The municipality is a net importer of workers, with about 1.6 workers entering the municipality for every one leaving. Of the working population, 13.8% used public transportation to get to work, and 52.8% used a private car. Grenchen has a large traditional watch industry and several famous manufacturers are based in the city: FC Grenchen

2184-450: The municipality, there were 699 students in primary school and 108 students in the special, smaller classes. The secondary school program consists of three lower, obligatory years of schooling, followed by three to five years of optional, advanced schools. 226 lower secondary students attend school in Grenchen. As of 2000 , there were 171 students in Grenchen who came from another municipality, while 267 residents attended schools outside

2240-495: The municipality. Grenchen is home to the Stadtbibliothek Grenchen library. As of 2008, the library had 36,000 books or other media and loaned out 57,000 items. It was open a total of 258 days, with an average of 19 hours per week during that year. Blazon In heraldry and heraldic vexillology , a blazon is a formal description of a coat of arms , flag or similar emblem , from which

2296-424: The municipality. The most common apartment size was three rooms of which there were 2,925. There were 429 single room apartments and 1,631 apartments with five or more rooms. Of these apartments, a total of 7,267 apartments (84.1% of the total) were permanently occupied, while 584 apartments (6.8%) were seasonally occupied and 788 apartments (9.1%) were empty. As of 2009 , the construction rate of new housing units

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2352-502: The population) and 2,547 (15.9%) non-Swiss men. There were 5,845 Swiss women (36.5%) and 2,289 (14.3%) non-Swiss women. Of the population in the municipality 5,606 or about 35.2% were born in Grenchen and lived there in 2000. There were 2,017 or 12.7% who were born in the same canton, while 4,258 or 26.7% were born somewhere else in Switzerland, and 3,433 or 21.5% were born outside of Switzerland. In 2008 , there were 75 live births to Swiss citizens and 47 births to non-Swiss citizens. In

2408-536: The population) belonged to no church, are agnostic or atheist , and 577 individuals (or about 3.62% of the population) did not answer the question. In Grenchen, about 5,773 or (36.2%) of the population have completed non-mandatory upper secondary education , and 1,457 or (9.1%) have completed additional higher education (either university or a Fachhochschule ). Of the 1,457 who completed tertiary schooling, 64.2% were Swiss men, 20.9% were Swiss women, 10.1% were non-Swiss men and 4.9% were non-Swiss women. During

2464-616: The population), there were 171 individuals (or about 1.07% of the population) who belonged to the Christian Catholic Church , and there were 284 individuals (or about 1.78% of the population) who belonged to another Christian church. There were 3 individuals (or about 0.02% of the population) who were Jewish , and 1,145 (or about 7.18% of the population) who were Islamic . There were 70 individuals who were Buddhist , 90 individuals who were Hindu and 17 individuals who belonged to another church. 2,019 (or about 12.67% of

2520-510: The reader can reconstruct the appropriate image. The verb to blazon means to create such a description. The visual depiction of a coat of arms or flag has traditionally had considerable latitude in design, but a verbal blazon specifies the essentially distinctive elements. A coat of arms or flag is therefore primarily defined not by a picture but rather by the wording of its blazon (though in modern usage flags are often additionally and more precisely defined using geometrical specifications). Blazon

2576-407: The repair of motor vehicles, 188 or 5.7% were in the movement and storage of goods, 236 or 7.2% were in a hotel or restaurant, 61 or 1.9% were in the information industry, 119 or 3.6% were the insurance or financial industry, 211 or 6.4% were technical professionals or scientists, 371 or 11.3% were in education and 910 or 27.7% were in health care. In 2000 , there were 5,261 workers who commuted into

2632-532: The same time span, there were 167 deaths of Swiss citizens and 10 non-Swiss citizen deaths. Ignoring immigration and emigration, the population of Swiss citizens decreased by 92 while the foreign population increased by 37. There were 21 Swiss men and 16 Swiss women who immigrated back to Switzerland. At the same time, there were 103 non-Swiss men and 59 non-Swiss women who immigrated from another country to Switzerland. The total Swiss population change in 2008 (from all sources, including moves across municipal borders)

2688-500: The senior line of a particular family. As an armiger 's arms may be used "by courtesy", either by children or spouses, while they are still living, some form of differencing may be required so as not to confuse them with the original undifferenced or "plain coat" arms. Historically, arms were only heritable by males and therefore cadency marks had no relevance to daughters; in the modern era, Canadian and Irish heraldry include daughters in cadency. These differences are formed by adding to

2744-417: The senior line. These cadency marks are usually shown smaller than normal charges, but it still does not follow that a shield containing such a charge belongs to a cadet branch. All of these charges occur frequently in basic undifferenced coats of arms. To marshal two or more coats of arms is to combine them in one shield. This can be done in a number of ways, of which the simplest is impalement : dividing

2800-453: The total number of full-time equivalent jobs was 9,004. The number of jobs in the primary sector was 85, of which 77 were in agriculture and 8 were in forestry or lumber production. The number of jobs in the secondary sector was 5,635 of which 5,189 or (92.1%) were in manufacturing and 367 (6.5%) were in construction. The number of jobs in the tertiary sector was 3,284. In the tertiary sector; 742 or 22.6% were in wholesale or retail sales or

2856-502: The total) out of a total of 2,763 inhabited buildings. There were 940 multi-family buildings (34.0%), along with 310 multi-purpose buildings that were mostly used for housing (11.2%) and 177 other use buildings (commercial or industrial) that also had some housing (6.4%). Of the single family homes, 67 were built before 1919, while 187 were built between 1990 and 2000. The greatest number of single family homes (388) were built between 1946 and 1960. In 2000 , there were 8,639 apartments in

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2912-413: Was 0.9 new units per 1000 residents. As of 2003 , the average price to rent an apartment in Grenchen was 862.63 Swiss francs (CHF) per month (US$ 690, £390, €550 approx. exchange rate from 2003). The average rate for a one-room apartment was 571.19 CHF (US$ 460, £260, €370), a two-room apartment was about 637.30 CHF (US$ 510, £290, €410), a three-room apartment was about 776.90 CHF (US$ 620, £350, €500) and

2968-562: Was 2,551 people or 16.0% of the population was between 65 and 79 years old and there were 853 people or 5.4% who were over 80. As of 2000 , there were 5,771 people who were single and never married in the municipality. There were 7,679 married individuals, 1,264 widows or widowers and 1,224 individuals who were divorced. As of 2000 , there were 7,409 private households in the municipality, and an average of 2.1 persons per household. There were 2,910 households that consisted of only one person and 352 households with five or more people. Out of

3024-543: Was a decrease of 20 and the non-Swiss population increased by 190 people. This represents a population growth rate of 1.1%. The age distribution as of 2000 in Grenchen was as follows: 942 children or 5.9% of the population were between 0 and 6 years old and 2,291 teenagers or 14.4% were between 7 and 19. Of the adult population, 838 people or 5.3% of the population were between 20 and 24 years old. 4,463 people or 28.0% were between 25 and 44, and 4,000 people or 25.1% were between 45 and 64. The senior population distribution

3080-497: Was built between 1911 and 1915, offers a connection between the Swiss plateau and Delémont / Basel . Construction of the tunnel attracted many foreign workers to Grenchen, coming mostly from Italy. Grenchen has its own bus company, "BGU". The bus lines connect Grenchen with Bettlach , Lengnau , Büren , Rüti and Selzach . As of  2010 , Grenchen had an unemployment rate of 5.7%. As of 2008 , there were 122 people employed in

3136-594: Was carried out by the XLF-207 Laminar, an LF-107 fitted with laminar flow wings. Presently there are only nine airworthy Luňáks, two of which are in the United Kingdom . A Luňák is displayed in the American Museum of Flight. Data from General characteristics Performance Grenchen Grenchen ( French : Granges ) is a municipality in the district of Lebern in

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