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117-590: The General Aircraft Monospar was a family of touring and utility aircraft designed and built by the British aviation company General Aircraft Ltd (GAL). In 1929, the Monospar Company Ltd was formed to pursue new techniques of designing cantilever wings, based on the work of Swiss engineer Helmuth J. Stieger, who headed the company. Helmuth John Stieger was born in Zurich in 1902, and educated at

234-828: A fair trial . The English monarchs, through inheritance of substantial territories in France and claims to the French crown, were also heavily involved in conflicts in France, most notably the Hundred Years' War , while the Kings of Scots were in an alliance with the French during this period. Early modern Britain saw religious conflict resulting from the Reformation and the introduction of Protestant state churches in each country. The English Reformation ushered in political, constitutional, social and cultural change in

351-521: A subpolar oceanic climate . Higher elevations in Scotland experience a continental subarctic climate and the mountains experience a tundra climate . The prevailing wind is from the southwest and bears frequent spells of mild and wet weather from the Atlantic Ocean, although the eastern parts are mostly sheltered from this wind. Since the majority of the rain falls over the western regions,

468-604: A welfare state was established, and a comprehensive, publicly funded healthcare system, the National Health Service , was created. The rise of nationalism in the colonies coincided with Britain's much-diminished economic position, so that a policy of decolonisation was unavoidable. Independence was granted to India and Pakistan in 1947. Over the next three decades, most colonies of the British Empire gained their independence, and many became members of

585-458: A component to meet a lower than normal safety factor, often referred to as "waiving" the requirement. Doing this often brings with it extra detailed analysis or quality control verifications to assure the part will perform as desired, as it will be loaded closer to its limits. For loading that is cyclical, repetitive, or fluctuating, it is important to consider the possibility of metal fatigue when choosing factor of safety. A cyclic load well below

702-458: A constant value intended as a minimum target for design (second use). There are several ways to compare the factor of safety for structures. All the different calculations fundamentally measure the same thing: how much extra load beyond what is intended a structure will actually take (or be required to withstand). The difference between the methods is the way in which the values are calculated and compared. Safety factor values can be thought of as

819-519: A design factor of two. Risk analysis , failure mode and effects analysis , and other tools are commonly used. Design factors for specific applications are often mandated by law, policy, or industry standards. Buildings commonly use a factor of safety of 2.0 for each structural member. The value for buildings is relatively low because the loads are well understood and most structures are redundant . Pressure vessels use 3.5 to 4.0, automobiles use 3.0, and aircraft and spacecraft use 1.2 to 4.0 depending on

936-649: A developed version, the Monospar ST-10 , externally the same but powered by two Pobjoy Niagara engines, an improved fuel system, and aerodynamic refinements. The Monospar ST-11 was developed from the ST-10, with retractable landing gear, and two were built for export to Australia . A production batch of ten Monospar ST-12 aircraft was based on the ST-11, but with de Havilland Gipsy Major engines and fixed landing gear. The Croydon factory closed down in 1934, and

1053-572: A flanged plate with lightening holes. The wing was built entirely of duralumin, excluding some steel fittings and wiring plates. A modified form of the wing's monospar construction was used for the fuselage; its primary structure member was a square-section beam of relatively shallow depth, composed of duralumin, that was placed at the bottom of the fuselage and anchored to the wing spar of the center section. The four corner booms of this beam were of built-up D-section and were joined by an outer cover of stamped duralumin sheeting that formed lattices, akin to

1170-816: A land border with the Republic of Ireland ; otherwise, the United Kingdom is surrounded by the Atlantic Ocean , the North Sea , the English Channel , the Celtic Sea , and the Irish Sea . The United Kingdom had an estimated population of over 68.2 million people in 2023. The capital and largest city of both England and the United Kingdom is London , whose wider metropolitan area is

1287-404: A larger factory was opened in 1935 at London Air Park, Hanworth . The General Aircraft Monospar was a family of unorthodox touring and utility aircraft. In its original configuration, it was a three-seater aircraft, placing the pilot and one passenger side by side, albeit slightly staggered, while a second passenger could be seated directly behind them. The forward position of the pilot's seat and

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1404-399: A leading role in the movement to abolish slavery worldwide through the blockade of Africa and pressing other nations to end their trade with a series of treaties. In 1800 the parliaments of Great Britain and Ireland each passed an Act of Union, uniting the two kingdoms and creating the United Kingdom of Great Britain and Ireland on 1 January 1801. After the defeat of France at the end of

1521-446: A plain duralumin plate with triangular holes stamped out for lightness, used a series of lattice bars that functioned as braces between top and bottom flanges . These spar flanges were built up of strips and consisted of angle sections that were riveted to the web with reinforcing cover plates added on the outside. Curved angle sections were used instead of plain flat counterparts, which made them considerably stronger in compression as

1638-853: A policy of splendid isolation in Europe, and attempted to contain Russian influence in Afghanistan and Persia , in what came to be known as the Great Game . During this time, Canada , Australia and New Zealand were granted self-governing dominion status. At the turn of the century, Britain's industrial dominance became challenged by the German Empire and the United States . The Edwardian era saw social reform and home rule for Ireland become important domestic issues, while

1755-594: A production run of 30. In 1933, the Monospar ST-6 appeared, a similar aircraft to the ST-4, with manually retractable landing gear and room for an extra passenger. The Monospar ST-6 was only the second British aircraft to fly with retractable landing gear (the first, the Airspeed Courier , was flown a few weeks earlier). Another Monospar ST-6 was built, and two ST-4 Mk.IIs were converted. GAL then produced

1872-518: A proposed change. This approach becomes important when examining designs with large or undefined (historical) margins and those that depend on "soft" controls such as programmatic limits or requirements. The commercial U.S. nuclear industry utilized a similar concept in evaluating planned changes until 2001, when 10 CFR 50.59 was revised to capture and apply the information available in facility-specific risk analyses and other quantitative risk management tools. A measure of strength frequently used in Europe

1989-675: A quantity that may not be reduced without review by the controlling government office. The U.S. Department of Energy publishes DOE G 424.1-1, "Implementation Guide for Use in Addressing Unreviewed Safety Question Requirements" as a guide for determining how to identify and determine whether a margin of safety will be reduced by a proposed change. The guide develops and applies the concept of a qualitative margin of safety that may not be explicit or quantifiable, yet can be evaluated conceptually to determine whether an increase or decrease will occur with

2106-507: A result of a shortage of workers in the 1950s, the government encouraged immigration from Commonwealth countries . In the following decades, the UK became a more multi-ethnic society. Despite rising living standards in the late 1950s and 1960s, the UK's economic performance was less successful than many of its main competitors such as France, West Germany and Japan. The UK was the first democratic nation to lower its voting age to 18 in 1969. In

2223-811: A series of connected wars (including the English Civil War ) which led to the temporary overthrow of the monarchy, with the execution of King Charles I , and the establishment of the short-lived unitary republic of the Commonwealth of England , Scotland and Ireland. Although the monarchy was restored , the Interregnum along with the Glorious Revolution of 1688 and the subsequent Bill of Rights 1689 in England and Claim of Right Act 1689 in Scotland ensured that, unlike much of

2340-426: A standardized way for comparing strength and reliability between systems. The use of a factor of safety does not imply that an item, structure, or design is "safe". Many quality assurance , engineering design , manufacturing , installation, and end-use factors may influence whether or not something is safe in any particular situation. The difference between the safety factor and design factor (design safety factor)

2457-585: A young crocodile that was being transported to Adelaide . Renfrey walked for two days towards Ryan's Well , a watering hole on the Overland Telegraph Line around 40 mi (64 km), to seek assistance. Three men (one of several search parties sent out to look for the men) motoring across the desert found him, and took him to Aileron telegraph station. In the meantime, Don Thomas from Alice Springs drove to Woodgreen to pick up Purvis Sr and two "blackfellows", one of whom managed to track down

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2574-406: Is 1.5, but for pressurized fuselage it is 2.0, and for main landing gear structures it is often 1.25. In some cases it is impractical or impossible for a part to meet the "standard" design factor. The penalties (mass or otherwise) for meeting the requirement would prevent the system from being viable (such as in the case of aircraft or spacecraft). In these cases, it is sometimes determined to allow

2691-417: Is as follows: The safety factor, or yield stress, is how much the designed part actually will be able to withstand (first usage from above). The design factor, or working stress, is what the item is required to be able to withstand (second usage). The design factor is defined for an application (generally provided in advance and often set by regulatory building codes or policy) and is not an actual calculation,

2808-409: Is greater than or equal to zero. The margin of safety is sometimes, but infrequently, used as a percentage, i.e., a 0.50 M.S is equivalent to a 50% M.S. When a design satisfies this test it is said to have a "positive margin", and, conversely, a "negative margin" when it does not. In the field of nuclear safety (as implemented at U.S. government-owned facilities) the margin of safety has been defined as

2925-513: Is inconsistent and confusing; there are several definitions used. The cause of much confusion is that various reference books and standards agencies use the factor of safety definitions and terms differently. Building codes , structural and mechanical engineering textbooks often refer to the "factor of safety" as the fraction of total structural capability over what is needed. Those are realized factors of safety (first use). Many undergraduate strength of materials books use "Factor of Safety" as

3042-481: Is only the one specific nominal term 'Great Britain' which invariably excludes Northern Ireland". The BBC historically preferred to use "Britain" as shorthand only for Great Britain, though the present style guide does not take a position except that "Great Britain" excludes Northern Ireland. The adjective "British" is commonly used to refer to matters relating to the United Kingdom and is used in law to refer to United Kingdom citizenship and nationality . People of

3159-538: Is ranked 2nd out of 180 countries in the Environmental Performance Index . A law has been passed that UK greenhouse gas emissions will be net zero by 2050. England accounts for 53 per cent of the UK, covering 50,350 square miles (130,395 km ). Most of the country consists of lowland terrain, with upland and mountainous terrain northwest of the Tees–Exe line which roughly divides

3276-599: Is sometimes used as a loose synonym for the United Kingdom as a whole. The word England is occasionally used incorrectly to refer to the United Kingdom as a whole, a mistake principally made by people from outside the UK. The term "Britain" is used as a synonym for Great Britain , but also sometimes for the United Kingdom. Usage is mixed: the UK Government prefers to use the term "UK" rather than "Britain" or "British" on its website (except when referring to embassies), while acknowledging that both terms refer to

3393-579: Is the Isle of Wight . Scotland accounts for 32 per cent of the UK, covering 30,410 square miles (78,772 km ). This includes nearly 800 islands , notably the Hebrides , Orkney Islands and Shetland Islands. Scotland is the most mountainous constituent country of the UK, the Highlands to the north and west are the more rugged region containing the majority of Scotland's mountainous land, including

3510-435: Is the reserve factor (RF). With the strength and applied loads expressed in the same units, the reserve factor is defined in one of two ways, depending on the industry: The applied loads have many factors, including factors of safety applied. For ductile materials (e.g. most metals), it is often required that the factor of safety be checked against both yield and ultimate strengths. The yield calculation will determine

3627-636: Is the highest peak in Wales. Wales has over 1,680 miles (2,704 kilometres) of coastline including the Pembrokeshire Coast . Several islands lie off the Welsh mainland, the largest of which is Anglesey ( Ynys Môn ). Factor of safety There are two definitions for the factor of safety (FoS): The realized factor of safety must be greater than the required design factor of safety. However, between various industries and engineering groups usage

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3744-588: The 1884 Reform Act championed by William Gladstone granting suffrage to a majority of males for the first time. The British population increased at a dramatic rate, accompanied by rapid urbanisation , causing significant social and economic stresses. By the late 19th century, the Conservatives under Benjamin Disraeli and Lord Salisbury initiated a period of imperial expansion in Africa , maintained

3861-534: The Atlantic slave trade , mainly between 1662 and 1807 when British or British-colonial slave ships transported nearly 3.3 million slaves from Africa. The slaves were taken to work on plantations , principally in the Caribbean but also North America . However, with pressure from the abolitionism movement , Parliament banned the trade in 1807, banned slavery in the British Empire in 1833, and Britain took

3978-650: The Battle of Culloden in 1746, after which the Scottish Highlanders were forcibly assimilated into Scotland by revoking the feudal independence of clan chiefs . The British colonies in North America that broke away in the American War of Independence became the United States . British imperial ambition turned towards Asia, particularly to India . British merchants played a leading part in

4095-663: The Cairngorms , Loch Lomond and The Trossachs and Ben Nevis which at 1,345 metres (4,413 ft) is the highest point in the British Isles. Wales accounts for less than 9 per cent of the UK, covering 8,020 square miles (20,779 km ). Wales is mostly mountainous, though South Wales is less mountainous than North and mid Wales . The highest mountains in Wales are in Snowdonia and include Snowdon ( Welsh : Yr Wyddfa ) which, at 1,085 metres (3,560 ft),

4212-523: The Commonwealth of Nations . The UK was the third country to develop a nuclear weapons arsenal (with its first atomic bomb test, Operation Hurricane , in 1952), but the post-war limits of Britain's international role were illustrated by the Suez Crisis of 1956. The international spread of the English language ensured the continuing international influence of its literature and culture . As

4329-767: The European Convention on Human Rights . The UK remained a great power with global diplomatic and military influence and a leading role in the United Nations and NATO . The UK broadly supported the United States' approach to the " war on terror " in the early 21st century. British troops fought in the War in Afghanistan , but controversy surrounded Britain's military deployment in Iraq , which saw

4446-583: The European Union (EU) in 1992, the UK was one of the 12 founding member states. From the late 1960s, Northern Ireland suffered communal and paramilitary violence (sometimes affecting other parts of the UK) conventionally known as the Troubles . It is usually considered to have ended with the 1998 Belfast "Good Friday" Agreement . Following a period of widespread economic slowdown and industrial strife in

4563-494: The Falkland Islands , leading to the 10-week Falklands War in which Argentine forces were defeated. The inhabitants of the islands are predominantly descendants of British settlers, and strongly favour British sovereignty, expressed in a 2013 referendum . From 1984, the UK economy was helped by the inflow of substantial North Sea oil revenues. Another British overseas territory, Gibraltar , ceded to Great Britain in

4680-545: The French Revolutionary Wars and Napoleonic Wars (1792–1815), the United Kingdom emerged as the principal naval and imperial power (with London the largest city in the world from about 1830). Unchallenged at sea , British dominance was later described as Pax Britannica ("British Peace"), a period of relative peace among the great powers (1815–1914) during which the British Empire became

4797-725: The Kingdom of England and the Kingdom of Scotland united under the Treaty of Union to create the Kingdom of Great Britain . The Acts of Union 1800 incorporated the Kingdom of Ireland to create the United Kingdom of Great Britain and Ireland in 1801. Most of Ireland seceded from the UK in 1922 as the Irish Free State , and the Royal and Parliamentary Titles Act 1927 created the present United Kingdom. The UK became

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4914-650: The Labour Party emerged from an alliance of trade unions and small socialist groups in 1900, and suffragettes campaigned for women's right to vote. Britain was one of the principal Allies that defeated the Central Powers in the First World War (1914–1918). Alongside their French, Russian and (after 1917) American counterparts, British armed forces were engaged across much of the British Empire and in several regions of Europe, particularly on

5031-647: The Representation of the People Act 1918 . After the war, Britain became a permanent member of the Executive Council of the League of Nations and received a mandate over a number of former German and Ottoman colonies. Under the leadership of David Lloyd George , the British Empire reached its greatest extent, covering a fifth of the world's land surface and a quarter of its population. By

5148-973: The Soviet Union formed in 1941, leading the Allies against the Axis powers . There were eventual hard-fought victories in the Battle of the Atlantic , the North Africa campaign and the Italian campaign . British forces played important roles in the Normandy landings of 1944 and the liberation of Europe . The British Army led the Burma campaign against Japan, and the British Pacific Fleet fought Japan at sea. British scientists contributed to

5265-584: The United Kingdom ( UK ) or Britain , is a country in Northwestern Europe , off the coast of the continental mainland . It comprises England , Scotland , Wales , and Northern Ireland . The UK includes the island of Great Britain , the north-eastern part of the island of Ireland , and most of the smaller islands within the British Isles , making up a total area of 94,354 square miles (244,376 km ). Northern Ireland shares

5382-511: The Western Front . The high fatalities of trench warfare caused the loss of much of a generation of men, with lasting social effects in the nation and a great disruption in the social order. Britain had suffered 2.5 million casualties and finished the war with a huge national debt. The consequences of the war persuaded the government to expand the right to vote in national and local elections to all adult men and most adult women with

5499-471: The coastline paradox . It is connected to continental Europe by the Channel Tunnel , which at 31 miles (50 km) (24 miles (38 km) underwater) is the longest underwater tunnel in the world. The UK contains four terrestrial ecoregions: Celtic broadleaf forests , English Lowlands beech forests , North Atlantic moist mixed forests , and Caledonian conifer forests . The area of woodland in

5616-491: The largest protest in British history in opposition to the government led by Tony Blair . The Great Recession severely affected the UK economy. The Cameron–Clegg coalition government of 2010 introduced austerity measures intended to tackle the substantial public deficits. Studies have suggested that policy led to significant social disruption and suffering. A referendum on Scottish independence in 2014 resulted in

5733-512: The 16th century and established the Church of England . Moreover, it defined a national identity for England and slowly, but profoundly, changed people's religious beliefs. Wales was fully incorporated into the Kingdom of England , and Ireland was constituted as a kingdom in personal union with the English crown. In what was to become Northern Ireland, the lands of the independent Catholic Gaelic nobility were confiscated and given to Protestant settlers from England and Scotland. In 1603,

5850-401: The 1713 Treaty of Utrecht, is a key military base . A referendum in 2002 on shared sovereignty with Spain was rejected by 98.97% of voters in the territory. Around the end of the 20th century, there were major changes to the governance of the UK with the establishment of devolved administrations for Scotland, Wales and Northern Ireland. The statutory incorporation followed acceptance of

5967-428: The 1934 King's Cup Air Race with an average speed of 134.16 mph. Only one other ST-10 was built. On 6 September 1935, a Monospar ST-12 operated by Australian Transcontinental Airways suffered engine failure , and made an emergency landing on Woodgreen Station in the Northern Territory . Reports vary slightly, but the plane was said to be carrying the pilot J. Maher, with two passengers, Renfrey and Maloney, and

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6084-406: The 1970s, the Conservative government of the 1980s led by Margaret Thatcher initiated a radical policy of monetarism , deregulation, particularly of the financial sector (for example, the Big Bang in 1986) and labour markets, the sale of state-owned companies (privatisation), and the withdrawal of subsidies to others. In 1982, Argentina invaded the British territories of South Georgia and

6201-476: The 5th century) united with the Picts to create the Kingdom of Scotland in the 9th century. In 1066, the Normans invaded England from northern France. After conquering England , they seized large parts of Wales , conquered much of Ireland and were invited to settle in Scotland, bringing to each country feudalism on the Northern French model and Norman-French culture. The Anglo-Norman ruling class greatly influenced, but eventually assimilated with,

6318-464: The Brittonic area mainly to what was to become Wales , Cornwall and, until the latter stages of the Anglo-Saxon settlement, the Hen Ogledd (northern England and parts of southern Scotland). Most of the region settled by the Anglo-Saxons became unified as the Kingdom of England in the 10th century. Meanwhile, Gaelic speakers in north-west Britain (with connections to the north-east of Ireland and traditionally supposed to have migrated from there in

6435-452: The Manhattan Project whose task was to build an atomic weapon. Once built, it was decided, with British consent, to use the weapon against Japan. The UK was one of the Big Three powers (along with the US and the Soviet Union) who met to plan the post-war world ; it drafted the Declaration by United Nations with the United States and became one of the five permanent members of the United Nations Security Council . It worked closely with

6552-425: The Name of Great Britain". The term "United Kingdom" has occasionally been used as a description for the former Kingdom of Great Britain , although its official name from 1707 to 1800 was simply "Great Britain". The Acts of Union 1800 formed the United Kingdom of Great Britain and Ireland . Following the partition of Ireland and the independence of the Irish Free State in 1922, which left Northern Ireland as

6669-411: The Normans conquered England . With the end of the Wars of the Roses the English state stabilised and began to grow in power, resulting by the 16th century in the annexation of Wales , the domination of Scotland , and the establishment of the British Empire . Over the course of the 17th century, the role of the British monarchy was reduced, particularly as a result of the English Civil War . In 1707,

6786-495: The Scottish electorate voting by 55.3 to 44.7% to remain part of the United Kingdom. In 2016, 51.9 per cent of voters in the United Kingdom voted to leave the European Union . The UK left the EU in 2020. On 1 May 2021, the EU–UK Trade and Cooperation Agreement came into force. The COVID-19 pandemic had a severe impact on the UK's economy , caused major disruptions to education and had far-reaching impacts on society and politics in 2020 and 2021. The United Kingdom

6903-489: The Second World War damaged Britain's economic power and a global wave of decolonisation led to the independence of most British colonies. The United Kingdom is a constitutional monarchy and parliamentary democracy . The UK has three distinct jurisdictions: England and Wales , Scotland , and Northern Ireland . Since 1999, Scotland, Wales and Northern Ireland have their own governments and parliaments which control various devolved matters. A developed country ,

7020-519: The Swiss Federal Polytechnic, and then at the Imperial College of Science in London. While working as a designer for William Beardmore and Company , he formed his own ideas about wing design, and evolved an improved method of building and stressing wings, for which he was later granted a British Patent in December 1927. The principle behind this Patent No. 306,220 was that the wing needed only one spar with torsion loads resisted by an efficient system of strong compression struts, with triangulated bracing in

7137-430: The UK has the world's sixth-largest economy by nominal gross domestic product (GDP). It is a nuclear state , and is ranked fifth globally in military expenditure . The UK has been a permanent member of the UN Security Council since its first session in 1946. It is a member of the Commonwealth of Nations , Council of Europe , G7 , OECD , NATO , Five Eyes , AUKUS and CPTPP . British influence can be observed in

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7254-484: The UK in 2023 is estimated to be 3.25 million hectares, which represents 13% of the total land area in the UK. Most of the United Kingdom has a temperate climate, with generally cool temperatures and plentiful rainfall all year round. The temperature varies with the seasons seldom dropping below 0  °C (32  °F ) or rising above 30 °C (86 °F). Some parts, away from the coast, of upland England, Wales, Northern Ireland and most of Scotland, experience

7371-433: The UK into lowland and upland areas. Lowland areas include Cornwall , the New Forest , the South Downs and the Norfolk Broads . Upland areas include the Lake District , the Pennines , the Yorkshire Dales , Exmoor , and Dartmoor . The main rivers and estuaries are the Thames , Severn , and the Humber . England's highest mountain is Scafell Pike , at 978 metres (3,209 ft) in the Lake District; its largest island

7488-402: The United Kingdom and that elsewhere "British government" is used at least as frequently as "United Kingdom government". The UK Permanent Committee on Geographical Names recognises "United Kingdom", "UK" and "U.K." as shortened and abbreviated geopolitical terms for the United Kingdom of Great Britain and Northern Ireland in its toponymic guidelines; it does not list "Britain" but notes that "it

7605-411: The United Kingdom is 1339.7 hours, which is just under 30% of the maximum possible. The hours of sunshine vary from 1200 to about 1580 hours per year, and since 1996 the UK has been and still is receiving above the 1981 to 2010 average hours of sunshine. Climate change has a serious impact on the country. A third of food price rise in 2023 is attributed to climate change. As of 2022, the United Kingdom

7722-436: The United Kingdom use several different terms to describe their national identity and may identify themselves as being British , English , Scottish , Welsh , Northern Irish , or Irish ; or as having a combination of different national identities. Settlement by Cro-Magnons of what was to become the United Kingdom occurred in waves beginning by about 30,000 years ago. The island has been continuously inhabited only since

7839-491: The United Kingdom. The 1928 Equal Franchise Act gave women electoral equality with men in national elections. Strikes in the mid-1920s culminated in the General Strike of 1926 . Britain had still not recovered from the effects of the First World War when the Great Depression (1929–1932) led to considerable unemployment and hardship in the old industrial areas, as well as political and social unrest with rising membership in communist and socialist parties. A coalition government

7956-478: The United States to establish the IMF , World Bank and NATO . The war left the UK severely weakened and financially dependent on the Marshall Plan , but it was spared the total war that devastated eastern Europe. In the immediate post-war years, the Labour government under Clement Attlee initiated a radical programme of reforms, which significantly impacted British society in the following decades . Major industries and public utilities were nationalised ,

8073-420: The absence of a nose-mounted engine meant that forward visibility was exceptionally good. The cabin was furnished with sizable windows that also provided good external visibility, although the occupant of the rear seat has a less generous view, largely due to the low-mounted position of the wing obstructing visibility from that position. The engines were completely enclosed in cowlings , which were arranged so that

8190-401: The acquisition and settlement of overseas colonies , particularly in North America and the Caribbean. Though previous attempts at uniting the two kingdoms within Great Britain in 1606, 1667, and 1689 had proved unsuccessful, the attempt initiated in 1705 led to the Treaty of Union of 1706 being agreed and ratified by both parliaments. On 1 May 1707, the Kingdom of Great Britain was formed,

8307-404: The aircraft could carry a greater useful load without negatively impacting performance. This increase was viewed as being commercially significant, particularly against other competing modes of transport. It was also judged to be valuable in boosting the factor of safety for such an aircraft. The wing comprised three pieces, the centre section of which was integral with the fuselage and contained

8424-475: The aircraft. Accordingly, the structural weight of the aircraft was only 26 percent of the all-up weight, which a considerably lower percentage than was typically found amongst its contemporaries in its size and weight class. For conventional aircraft of the era, the structural weight made up a high proportion of the overall weight of the aircraft; by reducing the structural weight, the ratio of useful payload to all-up weight could be positively increased, meaning that

8541-466: The airflow (both over and under the wing) would freely cool the engine. Fuel was housed within a single tank within the aircraft's nose, almost directly forwards of the instrumentation panel; it was supplied to the engine directly and was fed by gravity . The principal feature of the Monospar was its innovative monospar construction method, which was applied not only to the wing but also the fuselage of

8658-586: The application and materials. Ductile, metallic materials tend to use the lower value while brittle materials use the higher values. The field of aerospace engineering uses generally lower design factors because the costs associated with structural weight are high (i.e. an aircraft with an overall safety factor of 5 would probably be too heavy to get off the ground). This low design factor is why aerospace parts and materials are subject to very stringent quality control and strict preventative maintenance schedules to help ensure reliability. A usually applied Safety Factor

8775-418: The brakes were conventionally operated via a centrally-placed lever. The axles were hinged to the wing girder or main spar on the underside of the fuselage. Each vertical leg, which incorporated a Vickers -supplied oleo shock absorber , were connected to a sturdy point within the engine mounting. A streamline radius rod braced each spring-leg to the wing girder. The Monospar ST-10 prototype ( G-ACTS ) won

8892-428: The corner booms. The underside of the fuselage was rigidly-braced to the aircraft's tail unit, which was fairly conventional. It had a cantilever fin while both the elevators and rudder were balanced. The stabiliser had a single spar along its trailing edge and triangularly-arranged flanged duralumin plates that ran forwards, along with five duralumin ribs, while the leading edge was formed from flattened tubing. Both

9009-408: The curved members that composed it helped to brace one another. Where local reinforcement of the spar was necessary, this can be provided by additional lamination on the outer faces of the spar. The flat spar web was stiffened in places by vertical V-section members. The spiral bracing used tie rods that were anchored at their ends to the tubular ribs and to plate fittings on the spar flanges where

9126-736: The decades-long process of European integration , the UK was a founding member of the Western European Union , established with the London and Paris Conferences in 1954. In 1960 the UK was one of the seven founding members of the European Free Trade Association (EFTA), but in 1973 it left to join the European Communities (EC). In a 1975 referendum 67% voted to stay in it. When the EC became

9243-431: The design load before failure ). A margin of 0 would mean the part would pass with a safety factor of 3. If the margin is less than 0 in this definition, although the part will not necessarily fail, the design requirement has not been met. A convenience of this usage is that for all applications, a margin of 0 or higher is passing, one does not need to know application details or compare against requirements, just glancing at

9360-483: The eastern parts are the driest. Atlantic currents, warmed by the Gulf Stream , bring mild winters, especially in the west where winters are wet and even more so over high ground. Summers are warmest in the southeast of England and coolest in the north. Heavy snowfall can occur in winter and early spring on high ground, and occasionally settles to great depth away from the hills. The average total annual sunshine in

9477-441: The elevators and rudders had similar structures. The flight controls were duplicated and of the conventional stick and rudder-bar type. The control columns were mounted in forks on the ends of compact fore-and-aft torque tubes that were mounted beneath the seats; these torque tubes were linked together as well as to a lever from which wires ran to the ailerons. The elevators were operated via a torque tube to which each control column

9594-437: The engine mountings, the struts of which acted as the king-posts in the wing bracing system. The wing structure consisted of a single main spar that was strong in its ability to bend but was braced against torsion by two sets of spiral bracing wires, that ran around the wing in opposing directions. The single spar was composed of duralumin and built up from several members to form an I-shaped beam. A supportive web, comprising

9711-469: The first industrialised country and was the world's foremost power for the majority of the 19th and early 20th centuries, particularly during the " Pax Britannica " between 1815 and 1914. At its height in the 1920s, the British Empire encompassed almost a quarter of the world's landmass and population, and was the largest empire in history . However, its involvement in the First World War and

9828-594: The first year, Britain and its Empire continued the war against Germany. Churchill engaged industry, scientists and engineers to support the government and the military in the prosecution of the war effort. In 1940, the Royal Air Force defeated the German Luftwaffe in the Battle of Britain . Urban areas suffered heavy bombing during the Blitz . The Grand Alliance of Britain, the United States and

9945-698: The form of thin wires. The design was revolutionary and very light for its strength. Based on this design, the Monospar Company designed a twin-engined low-wing aircraft designated the Monospar ST-3 , that was built and flown in 1931 by the Gloster Aircraft Company at Brockworth, Gloucestershire . After successful testing of the Monospar ST-3, a new company General Aircraft Ltd was formed to produce aircraft that used

10062-587: The formal control it exerted over its own colonies, British dominance of much of world trade meant that it effectively controlled the economies of regions such as East Asia and Latin America . Throughout the Victorian era , political attitudes favoured free trade and laissez-faire policies. Beginning with the Great Reform Act in 1832, Parliament gradually widened the voting franchise , with

10179-491: The fuselage was obtained via a series of hoops of trough-section duralumin and stringers (both fore and aft) of similar section. Furthermore, spiral wiring was present to increase the fuselage's torsional strength and make it thoroughly rigid. The result was a fuselage that was free from torsional and flutter -related concerns. The four booms were kept apart, and resistant to collapse, via a series of tubular distance pieces, both vertically and horizontally placed, that ran between

10296-762: The global hegemon and adopted the role of global policeman. From 1853 to 1856, Britain took part in the Crimean War , allied with the Ottoman Empire against Tsarist Russia , participating in the naval battles of the Baltic Sea known as the Åland War in the Gulf of Bothnia and the Gulf of Finland , among others. Following the Indian Rebellion in 1857 , the British government led by Lord Palmerston assumed direct rule over India . Alongside

10413-460: The imposed loads , strength, wear estimates, and the environmental effects to which the product will be exposed in service; the consequences of engineering failure; and the cost of over-engineering the component to achieve that factor of safety . For example, components whose failure could result in substantial financial loss, serious injury, or death may use a safety factor of four or higher (often ten). Non-critical components generally might have

10530-403: The kingdoms of England, Scotland and Ireland were united in a personal union when James VI, King of Scots , inherited the crowns of England and Ireland and moved his court from Edinburgh to London; each country nevertheless remained a separate political entity and retained its separate political, legal, and religious institutions. In the mid-17th century, all three kingdoms were involved in

10647-581: The largest in Western Europe , with a population of 14.9 million. The cities of Edinburgh , Cardiff , and Belfast are the national capitals of Scotland, Wales, and Northern Ireland, respectively. The lands of the UK have been inhabited continuously since the Neolithic . In AD 43 the Roman conquest of Britain began; the Roman departure was followed by Anglo-Saxon settlement . In 1066,

10764-408: The last retreat of the ice around 11,500 years ago. By the end of the region's prehistoric period , the population is thought to have belonged largely to a culture termed Insular Celtic , comprising Brittonic Britain and Gaelic Ireland . The Roman conquest , beginning in 43 AD, and the 400-year rule of southern Britain , was followed by an invasion by Germanic Anglo-Saxon settlers, reducing

10881-409: The legal and political systems of many of its former colonies , and British culture remains globally influential, particularly in language , literature , music and sport . English is the world's most widely spoken language and the third-most spoken native language . The Acts of Union 1707 declared that the Kingdom of England and Kingdom of Scotland were "United into One Kingdom by

10998-530: The local cultures. Subsequent medieval English kings completed the conquest of Wales and tried unsuccessfully to annex Scotland . Asserting its independence in the 1320 Declaration of Arbroath , Scotland maintained its independence thereafter, albeit in near-constant conflict with England . In 1215 the Magna Carta was the first document to state that no government was above the law, that citizens have rights protecting them and that they were entitled to

11115-401: The main wing spar web. This cover braced the fuselage beam while the free edges overlapped the top and bottom booms. The four booms were kept apart, and resistant to collapse, via a series of tubular distance pieces, both vertically and horizontally placed, that ran between the corner booms. This approach was relatively un-standardised and thus not particularly cheap to manufacture. The shape of

11232-618: The major part of the British Isles archipelago and includes the island of Great Britain, the north-eastern one-sixth of the island of Ireland and some smaller surrounding islands. It lies between the North Atlantic Ocean and the North Sea with the southeast coast coming within 22 miles (35 km) of the coast of northern France, from which it is separated by the English Channel . The Royal Greenwich Observatory in London

11349-407: The margin calculation tells whether the design passes or not. This is helpful for oversight and reviewing on projects with various integrated components, as different components may have various design factors involved and the margin calculation helps prevent confusion. For a successful design, the realized safety factor must always equal or exceed the design safety factor so that the margin of safety

11466-463: The margin of safety including the design factor, in other words, the margin of safety is calculated after applying the design factor. In the case of a margin of 0, the part is at exactly the required strength (the safety factor would equal the design factor). If there is a part with a required design factor of 3 and a margin of 1, the part would have a safety factor of 6 (capable of supporting two loads equal to its design factor of 3, supporting six times

11583-674: The mid-1920s, most of the British population could listen to BBC radio programmes. Experimental television broadcasts began in 1929 and the first scheduled BBC Television Service commenced in 1936. The rise of Irish nationalism , and disputes within Ireland over the terms of Irish Home Rule , led eventually to the partition of the island in 1921. A period of conflict in what is now Northern Ireland occurred from June 1920 until June 1922. The Irish Free State became independent, initially with Dominion status in 1922, and unambiguously independent in 1931 . Northern Ireland remained part of

11700-463: The only part of the island of Ireland within the United Kingdom, the name was changed in 1927 to the "United Kingdom of Great Britain and Northern Ireland". Although the United Kingdom is a sovereign country, England, Scotland, Wales and Northern Ireland are also widely referred to as countries . The UK Prime Minister's website has used the phrase "countries within a country" to describe the United Kingdom. Some statistical summaries, such as those for

11817-405: The part will not take any additional load before it fails, if it is negative the part will fail before reaching its design load in service. If the margin is 1, it can withstand one additional load of equal force to the maximum load it was designed to support (i.e. twice the design load). M.S. as a measure of requirement verification: Many agencies and organizations such as NASA and AIAA define

11934-536: The patented Monospar wing designs. The first production design was the Monospar ST-4 , a twin-engined low-wing monoplane with a fixed tailwheel landing gear and folding wings for ground storage. Powered by two Pobjoy R radial engines, the first aircraft (G-ABUZ) first flew in May 1932, and was followed by five production aircraft. The Monospar ST-4 Mk.II , an improved variant with minor differences, followed with

12051-494: The plane based on the description of the location given by Renfrey. Maher and Maloney had only six oranges between them for food, but they survived until they were rescued by shooting and eating the crocodile. Data from The Illustrated Encyclopedia of Aircraft , National Advisory Committee for Aeronautics General characteristics Performance Related lists United Kingdom The United Kingdom of Great Britain and Northern Ireland , commonly known as

12168-403: The reserve factor explained below) to represent how much of the structure's total capability is held "in reserve" during loading. M.S. as a measure of structural capability: This definition of margin of safety commonly seen in textbooks describes what additional load beyond the design load a part can withstand before failing. In effect, this is a measure of excess capability. If the margin is 0,

12285-504: The rest of Europe, royal absolutism would not prevail, and a professed Catholic could never accede to the throne. The British constitution would develop on the basis of constitutional monarchy and the parliamentary system . With the founding of the Royal Society in 1660, science was greatly encouraged. During this period, particularly in England, the development of naval power and the interest in voyages of discovery led to

12402-587: The result of the Acts of Union 1707 between the Kingdom of England and Kingdom of Scotland . In the 18th century, cabinet government developed under Robert Walpole , in practice the first prime minister (1721–1742). A series of Jacobite uprisings sought to remove the Protestant House of Hanover from the throne and restore the Catholic House of Stuart . The Jacobites were finally defeated at

12519-399: The safety factor is a ratio of maximum strength to intended load for the actual item that was designed. By this definition, a structure with an FOS of exactly 1 will support only the design load and no more. Any additional load will cause the structure to fail. A structure with an FOS of 2 will fail at twice the design load. Many government agencies and industries (such as aerospace) require

12636-421: The safety factor until the part starts to deform plastically . The ultimate calculation will determine the safety factor until failure. In brittle materials the yield and ultimate strengths are often so close as to be indistinguishable, so it is usually acceptable to only calculate the ultimate safety factor. Appropriate design factors are based on several considerations, such as the accuracy of predictions on

12753-406: The tie rods of a bay crossed each other; it did not extend out to the wing tips, instead finishing on the spar just beyond the inner end of the aileron . Instead, the false spar that carrying the aileron was used to brace the outer-most wing elements, such as the wing tips. This false spar was at a pronounced angle to that of the main spar, thus triangulating the structure; the former ran inwards from

12870-436: The twelve NUTS 1 regions , refer to Scotland, Wales and Northern Ireland as "regions". Northern Ireland is also referred to as a "province". With regard to Northern Ireland, the descriptive name used "can be controversial, with the choice often revealing one's political preferences". The term "Great Britain" conventionally refers to the island of Great Britain, or politically to England, Scotland and Wales in combination. It

12987-445: The use of a castoring tail skid and Bendix brakes; the aircraft could reportedly be kept straight even with only a single engine running even though each wheel was directly under an engine. At least one aircraft had an arrangement in which the brakes were coupled to the control column so that the brakes would activate whenever the pilot pulled back on the stick during a three-point landing; the interconnection could be released whenever

13104-472: The use of a margin of safety ( MoS or M.S. ) to describe the ratio of the strength of the structure to the requirements. There are two separate definitions for the margin of safety so care is needed to determine which is being used for a given application. One usage of M.S. is as a measure of capability like FoS. The other usage of M.S. is as a measure of satisfying design requirements (requirement verification). Margin of safety can be conceptualized (along with

13221-477: The wing tips, where they are attached to the main spars, to the final compression members of the monospar system via flanged duralumin plates. Additional stiffening of the wing forwards of the aileron was achieved via a pair of hinge ribs. Prise-type ailerons were fitted, which had a fabric covering and a built-up spar on which were threaded diaphragms of duralumin spaced by a flattened tube of duralumin along their trailing edges . The spars are U-shaped and closed with

13338-623: Was chosen as the defining point of the Prime Meridian at the International Meridian Conference in 1884. The United Kingdom lies between latitudes 49° and 61° N , and longitudes 9° W and 2° E . Northern Ireland shares a 224-mile (360 km) land boundary with the Republic of Ireland. The coastline of Great Britain is 11,073 miles (17,820 km) long, though measurements can vary greatly due to

13455-470: Was formed in 1931. Nonetheless, "Britain was a very wealthy country, formidable in arms, ruthless in pursuit of its interests and sitting at the heart of a global production system." After Nazi Germany invaded Poland in 1939, Britain entered the Second World War . Winston Churchill became prime minister and head of a coalition government in 1940. Despite the defeat of its European allies in

13572-413: Was linked through a universally jointed push-pull tube. Wires ran back to a lever on a lay-shaft in the tail unit from where the elevators actuated via a push-pull tube. Actuation of the rudder was via a series of cables that ran directly to the rudder from the rudder-bar. A divided-type undercarriage with a relatively wide track was fitted. It was highly maneouverable while on the ground, in part due to

13689-432: Was the first country in the world to use an approved COVID-19 vaccine , developing its own vaccine through a collaboration between Oxford University and AstraZeneca , which allowed the UK's vaccine rollout to be among the fastest in the world. The total area of the United Kingdom is approximately 94,354 square miles (244,376 km ), with a land area of 93,723 square miles (242,741 km ). The country occupies

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