77-582: The Morris Commercial J4 is a 10 cwt (0.5 ton) forward-control van (driver's controls in front of front wheels) launched by Morris Commercial in 1960 and produced with two facelifts until 1974. The van was marketed first as both the Morris J4 and the Austin J4 . Following the formation of the British Leyland Motor Corporation in 1968, into which British Motor Corporation (BMC), by then
154-473: A refrigerated van, or "reefer", used for cold goods. A railway car used to carry baggage is also called a "van". A vehicle referred to in the US as a " full-size van " is usually a large, boxy vehicle that has a platform and powertrain similar to their light truck counterparts. These vans may be sold with the space behind the front seats empty for transporting goods (cargo van), furnished for passenger use by either
231-582: A south-pointing chariot , a vehicle with an early form of guidance system. The stagecoach , a four-wheeled vehicle drawn by horses, originated in 13th century England. Railways began reappearing in Europe after the Dark Ages . The earliest known record of a railway in Europe from this period is a stained-glass window in the Minster of Freiburg im Breisgau dating from around 1350. In 1515, Cardinal Matthäus Lang wrote
308-504: A wagonway , a predecessor of the railway, found so far was the 6 to 8.5 km (4 to 5 mi) long Diolkos wagonway, which transported boats across the Isthmus of Corinth in Greece since around 600 BC. Wheeled vehicles pulled by men and animals ran in grooves in limestone , which provided the track element, preventing the wagons from leaving the intended route. In 200 CE, Ma Jun built
385-507: A " minivan " in American English is called a "people-carrier", "MPV" or multi-purpose vehicle, and larger passenger vehicles are called " minibuses ". The Telegraph newspaper introduced the idea of the " White Van Man ", a typical working class man or small business owner who would have a white Ford Transit , Mercedes-Benz Sprinter , or similar panel van. Today the phrase "man and van" refers to light removal firms normally operated by
462-433: A boost from high altitude winds. Compressed gas is currently an experimental method of storing energy. In this case, compressed gas is simply stored in a tank and released when necessary. Like elastics, they have hysteresis losses when gas heats up during compression. Gravitational potential energy is a form of energy used in gliders, skis, bobsleds and numerous other vehicles that go down hill. Regenerative braking
539-496: A cargo box trailer or semi-trailer is used rarely, if ever, in Australia. In India, the van is one of the most common modes of transportation and is often used for taking children to and from schools, usually when parents, especially working parents, are too busy to pick their children up from school or when school buses are full and unable to accommodate other children. Vans are also used for commercial purposes and office cabs. Some of
616-569: A convoy of multiple wagons. The word van has slightly different, but overlapping, meanings in different forms of English . While the word now applies everywhere to boxy cargo vans, other applications are found to a greater or lesser extent in different English-speaking countries; some examples follow: In Australian English , the term van is commonly used to describe a minivan , a passenger minibus , or an Australian panel van as manufactured by companies such as Holden and Ford at various times. A full-size van used for commercial purposes
693-577: A description of the Reisszug , a funicular railway at the Hohensalzburg Fortress in Austria. The line originally used wooden rails and a hemp haulage rope and was operated by human or animal power, through a treadwheel . 1769: Nicolas-Joseph Cugnot is often credited with building the first self-propelled mechanical vehicle or automobile in 1769. In Russia, in the 1780s, Ivan Kulibin developed
770-846: A fact that the New York Times denied in error . Rocket engines can be particularly simple, sometimes consisting of nothing more than a catalyst, as in the case of a hydrogen peroxide rocket. This makes them an attractive option for vehicles such as jet packs. Despite their simplicity, rocket engines are often dangerous and susceptible to explosions. The fuel they run off may be flammable, poisonous, corrosive or cryogenic. They also suffer from poor efficiency. For these reasons, rocket engines are only used when absolutely necessary. Electric motors are used in electric vehicles such as electric bicycles , electric scooters, small boats, subways, trains , trolleybuses , trams and experimental aircraft . Electric motors can be very efficient: over 90% efficiency
847-665: A flight with an actual ornithopter on July 31, 2010. Paddle wheels are used on some older watercraft and their reconstructions. These ships were known as paddle steamers . Because paddle wheels simply push against the water, their design and construction is very simple. The oldest such ship in scheduled service is the Skibladner . Many pedalo boats also use paddle wheels for propulsion. Screw-propelled vehicles are propelled by auger -like cylinders fitted with helical flanges. Because they can produce thrust on both land and water, they are commonly used on all-terrain vehicles. The ZiL-2906
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#1732851128429924-423: A gas station. Fuel cells are similar to batteries in that they convert from chemical to electrical energy, but have their own advantages and disadvantages. Electrified rails and overhead cables are a common source of electrical energy on subways, railways, trams, and trolleybuses. Solar energy is a more modern development, and several solar vehicles have been successfully built and tested, including Helios ,
1001-463: A go around is needed. Parachutes are used to slow down vehicles travelling very fast. Parachutes have been used in land, air and space vehicles such as the ThrustSSC , Eurofighter Typhoon and Apollo Command Module . Some older Soviet passenger jets had braking parachutes for emergency landings. Boats use similar devices called sea anchors to maintain stability in rough seas. To further increase
1078-509: A hot exhaust. Trains using turbines are called gas turbine-electric locomotives . Examples of surface vehicles using turbines are M1 Abrams , MTT Turbine SUPERBIKE and the Millennium . Pulse jet engines are similar in many ways to turbojets but have almost no moving parts. For this reason, they were very appealing to vehicle designers in the past; however, their noise, heat, and inefficiency have led to their abandonment. A historical example of
1155-537: A human-pedalled, three-wheeled carriage with modern features such as a flywheel , brake , gear box and bearings ; however, it was not developed further. In 1783, the Montgolfier brothers developed the first balloon vehicle. In 1801, Richard Trevithick built and demonstrated his Puffing Devil road locomotive, which many believe was the first demonstration of a steam-powered road vehicle, though it could not maintain sufficient steam pressure for long periods and
1232-452: A similar layout and could accommodate a V8 engine . Chevrolet also switched to this layout. The Ford, Dodge, and Corvair vans were also produced as pickup trucks. The standard or full size vans appeared with Ford's innovation of moving the engine forward under a short hood and using pickup truck components. The engine cockpit housing is often called a dog house . Over time, they evolved longer noses and sleeker shapes. The Dodge Sportsman
1309-584: A solar-powered aircraft. Nuclear power is a more exclusive form of energy storage, currently limited to large ships and submarines, mostly military. Nuclear energy can be released by a nuclear reactor , nuclear battery , or repeatedly detonating nuclear bombs . There have been two experiments with nuclear-powered aircraft, the Tupolev Tu-119 and the Convair X-6 . Mechanical strain is another method of storing energy, whereby an elastic band or metal spring
1386-458: A sole business owner transporting anything from the contents of a whole house to just a few boxes. The word "van" also refers to railway covered goods wagons , called "boxcars" in the United States. In the United States, a van can also refer to a box-shaped trailer or semi-trailer used to carry goods. In this case, there is a differentiation between a "dry van", used to carry most goods, and
1463-407: A special arrangement in which all four main wheels can be angled. Skids can also be used to steer by angling them, as in the case of a snowmobile . Ships, boats, submarines, dirigibles and aeroplanes usually have a rudder for steering. On an airplane, ailerons are used to bank the airplane for directional control, sometimes assisted by the rudder. With no power applied, most vehicles come to
1540-411: A stop due to friction . But it is often required to stop a vehicle faster than by friction alone, so almost all vehicles are equipped with a braking system. Wheeled vehicles are typically equipped with friction brakes, which use the friction between brake pads (stators) and brake rotors to slow the vehicle. Many airplanes have high-performance versions of the same system in their landing gear for use on
1617-513: A subsidiary of British Motor Holdings , had been absorbed, the van was branded as the BMC J4 . The van was fitted available with the familiar B series petrol engine in 1622cc form and also, at extra cost, with a 1500 cc diesel unit. Stopping power came from drum brakes all round; there was no servo assistance. Suspension was similar to that on the Austin Cambridge / Morris Oxford of the time:
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#17328511284291694-458: A type of vehicle arose as a contraction of the word caravan . The earliest records of a van as a vehicle in English are in the mid-19th century meaning a covered wagon for transporting goods; the earliest reported record of such was in 1829. The words caravan with the same meaning has been used since the 1670s. A caravan, meaning one wagon, had arisen as an extension, or corruption, of a caravan meaning
1771-489: A vacuum, which limits their use to spaceborne vehicles. Ion thrusters run primarily off electricity, but they also need a propellant such as caesium , or, more recently xenon . Ion thrusters can achieve extremely high speeds and use little propellant; however, they are power-hungry. The mechanical energy that motors and engines produce must be converted to work by wheels, propellers, nozzles, or similar means. Aside from converting mechanical energy into motion, wheels allow
1848-422: A variety of conditions. One of the difficulties met when using gas motors is the cooling effect of expanding gas. These engines are limited by how quickly they absorb heat from their surroundings. The cooling effect can, however, double as air conditioning. Compressed gas motors also lose effectiveness with falling gas pressure. Ion thrusters are used on some satellites and spacecraft. They are only effective in
1925-528: A vehicle to roll along a surface and, with the exception of railed vehicles, to be steered. Wheels are ancient technology, with specimens being discovered from over 5000 years ago. Wheels are used in a plethora of vehicles, including motor vehicles, armoured personnel carriers , amphibious vehicles, airplanes, trains, skateboards and wheelbarrows. Nozzles are used in conjunction with almost all reaction engines. Vehicles using nozzles include jet aircraft, rockets, and personal watercraft . While most nozzles take
2002-400: A vehicle's steering through the gyroscopic effect . They have been used experimentally in gyrobuses . Wind energy is used by sailboats and land yachts as the primary source of energy. It is very cheap and fairly easy to use, the main issues being dependence on weather and upwind performance. Balloons also rely on the wind to move horizontally. Aircraft flying in the jet stream may get
2079-405: Is fuel . External combustion engines can use almost anything that burns as fuel, whilst internal combustion engines and rocket engines are designed to burn a specific fuel, typically gasoline, diesel or ethanol . Food is the fuel used to power non-motor vehicles such as cycles, rickshaws and other pedestrian-controlled vehicles. Another common medium for storing energy is batteries , which have
2156-513: Is also known as a "van" in Australia; however, a passenger vehicle with more than seven or eight seats is more likely to be called a "minibus". The term van can also sometimes be used interchangeably with what Australians usually call a "caravan", which in the U.S. is referred to as a " travel trailer ". The British term people mover is also used in Australian English to describe a passenger van. The American usage of "van" which describes
2233-474: Is also used to describe full-fledged station wagons (passenger car front sheet metal, flat-folding back seats, windows all around) and even hatchbacks with basic trim packages intended for commercial use. These are referred to as "light vans" ( Japanese : ライトバン ), with "light" referring to the glazing rather than the weight of the vehicle. In British English , the word van refers to vehicles that carry goods only, either on roads or on rails. What would be called
2310-560: Is also useful in handling and rollover prevention. A van is taller than a typical passenger car, resulting in a higher center of gravity . The suspension is also higher to accommodate the weight of 15 passengers, who can weigh over one ton alone. In the United States, it is common for only the front seat passengers to use their safety belts . The U.S. National Highway Traffic Safety Administration (NHTSA) has determined that belted passengers are about four times more likely to survive in rollover crashes. Safety can be improved by understanding
2387-519: Is an example of capturing kinetic energy where the brakes of a vehicle are augmented with a generator or other means of extracting energy. When needed, the energy is taken from the source and consumed by one or more motors or engines. Sometimes there is an intermediate medium, such as the batteries of a diesel submarine. Most motor vehicles have internal combustion engines . They are fairly cheap, easy to maintain, reliable, safe and small. Since these engines burn fuel, they have long ranges but pollute
Morris Commercial J4 - Misplaced Pages Continue
2464-478: Is common. Electric motors can also be built to be powerful, reliable, low-maintenance and of any size. Electric motors can deliver a range of speeds and torques without necessarily using a gearbox (although it may be more economical to use one). Electric motors are limited in their use chiefly by the difficulty of supplying electricity. Compressed gas motors have been used on some vehicles experimentally. They are simple, efficient, safe, cheap, reliable and operate in
2541-414: Is deformed and releases energy as it is allowed to return to its ground state. Systems employing elastic materials suffer from hysteresis , and metal springs are too dense to be useful in many cases. Flywheels store energy in a spinning mass. Because a light and fast rotor is energetically favorable, flywheels can pose a significant safety hazard. Moreover, flywheels leak energy fairly quickly and affect
2618-438: Is desirable and important in supplying traction to facilitate motion on land. Most land vehicles rely on friction for accelerating, decelerating and changing direction. Sudden reductions in traction can cause loss of control and accidents. Most vehicles, with the notable exception of railed vehicles, have at least one steering mechanism. Wheeled vehicles steer by angling their front or rear wheels. The B-52 Stratofortress has
2695-518: Is never empty , a propeller could be made to work in space. Similarly to propeller vehicles, some vehicles use wings for propulsion. Sailboats and sailplanes are propelled by the forward component of lift generated by their sails/wings. Ornithopters also produce thrust aerodynamically. Ornithopters with large rounded leading edges produce lift by leading-edge suction forces. Research at the University of Toronto Institute for Aerospace Studies lead to
2772-577: Is restricted to tip jet helicopters and high speed aircraft such as the Lockheed SR-71 Blackbird . Rocket engines are primarily used on rockets, rocket sleds and experimental aircraft. Rocket engines are extremely powerful. The heaviest vehicle ever to leave the ground, the Saturn V rocket, was powered by five F-1 rocket engines generating a combined 180 million horsepower (134.2 gigawatt). Rocket engines also have no need to "push off" anything,
2849-497: Is the most-produced helicopter. The top commercial jet airliner is the Boeing 737 , at about 10,000 in 2018. At around 14,000 for both, the most produced trams are the KTM-5 and Tatra T3 . The most common trolleybus is ZiU-9 . Locomotion consists of a means that allows displacement with little opposition, a power source to provide the required kinetic energy and a means to control
2926-517: The Standard Atlas , Commer FC and the formerly class-leading but now ageing Bedford CA . Whilst competent as a van, the Morris J4 offered a rather poor driving experience even by the standards of the day. The sliding front doors were replaced by a pair of conventional front-hinged doors for the last model year (1973-74). The J4 was replaced in 1974 by the front-engined Sherpa van , which utilised
3003-467: The sedan deliveries of the 1930s to late-1950s. The first generation of American vans were the 1960s compact vans , which were patterned in size after the Volkswagen Bus . The Corvair -based entry even imitated the rear-mounted, air-cooled engine design. The Ford Falcon -based first-generation Econoline had a flat nose, with the engine mounted between and behind the front seats. The Dodge A100 had
3080-448: The US may also refer to a minivan . Minivans are usually distinguished by their smaller size and front wheel drive powertrain, although some are equipped with four-wheel drive . Minivans typically offer seven- or eight-passenger seating capacity , and better fuel economy than full-sized vans, at the expense of power, cargo space, and towing capacity. Minivans are often equipped with sliding doors. The precursor to American vans would be
3157-1043: The United States, full-size vans have been used as commuter vans since 1971, when Dodge introduced a van that could transport up to 15 passengers. Commuter vans are used as an alternative to carpooling and other ride-sharing arrangements. Many mobile businesses use a van to carry almost their entire business to various places where they work. For example, those who come to homes or places of business to perform various services, installations, or repairs. Vans are also used to shuttle people and their luggage between hotels and airports , to transport commuters between parking lots and their places of work, and along established routes as minibusses. Vans are also used to transport elderly and mobility-impaired worshipers to and from church services or to transport youth groups for outings to amusement parks, picnics, and visiting other churches. Vans are also used by schools to drive sports teams to intramural games. Vans have been used by touring music groups to haul equipment and people to music venues around
Morris Commercial J4 - Misplaced Pages Continue
3234-863: The advantages of being responsive, useful in a wide range of power levels, environmentally friendly, efficient, simple to install, and easy to maintain. Batteries also facilitate the use of electric motors, which have their own advantages. On the other hand, batteries have low energy densities, short service life, poor performance at extreme temperatures, long charging times, and difficulties with disposal (although they can usually be recycled). Like fuel, batteries store chemical energy and can cause burns and poisoning in event of an accident. Batteries also lose effectiveness with time. The issue of charge time can be resolved by swapping discharged batteries with charged ones; however, this incurs additional hardware costs and may be impractical for larger batteries. Moreover, there must be standard batteries for battery swapping to work at
3311-458: The air, causing harmful acid rain . While intermittent internal combustion engines were once the primary means of aircraft propulsion, they have been largely superseded by continuous internal combustion engines, such as gas turbines . Turbine engines are light and, particularly when used on aircraft, efficient. On the other hand, they cost more and require careful maintenance. They can also be damaged by ingesting foreign objects, and they produce
3388-417: The aircraft when retracted. Reverse thrust is also used in many aeroplane engines. Propeller aircraft achieve reverse thrust by reversing the pitch of the propellers, while jet aircraft do so by redirecting their engine exhausts forward. On aircraft carriers , arresting gears are used to stop an aircraft. Pilots may even apply full forward throttle on touchdown, in case the arresting gear does not catch and
3465-799: The back of the van!" Van A van is a type of road vehicle used for transporting goods or people. There is some variation in the scope of the word across the different English-speaking countries. The smallest vans, microvans , are used for transporting either goods or people in tiny quantities. Mini MPVs , compact MPVs , and MPVs are all small vans usually used for transporting people in small quantities. Larger vans with passenger seats are used for institutional purposes, such as transporting students. Larger vans with only front seats are often used for business purposes, to carry goods and equipment. Specially equipped vans are used by television stations as mobile studios. Postal services and courier companies use large step vans to deliver packages. Van meaning
3542-573: The country. Full-size van is a marketing term used in North America for a van larger than a minivan, that is characterized by a large, boxy appearance, a short hood, and heavy cargo and passenger-hauling capability. The first full-size van was the 1969 Ford Econoline , which used components from the Ford F-Series pickups . General Motors and the Dodge Ram Van followed with designs with
3619-507: The door open. Step vans have more boxy shapes, wider bodies, and higher rooftops than other vans, and are rarely employed for carrying passengers. The Minivan is a van which is smaller in size in length and height than a full-size van. Minivans are often used for personal use, as well as commercial passenger operations such as taxis and shuttles, and cargo operations like delivery of mail and packages. They offer more cargo space than traditional sedans and SUVs . Their lower center of gravity
3696-1011: The driver to pass through to the cargo compartment of the vehicle. Vehicle A vehicle (from Latin vehiculum ) is a machine designed for self- propulsion , usually to transport people, cargo , or both. The term "vehicle" typically refers to land vehicles such as human-powered vehicles (e.g. bicycles , tricycles , velomobiles ), animal-powered transports (e.g. horse-drawn carriages / wagons , ox carts , dog sleds ), motor vehicles (e.g. motorcycles , cars , trucks , buses , mobility scooters ) and railed vehicles ( trains , trams and monorails ), but more broadly also includes cable transport ( cable cars and elevators ), watercraft ( ships , boats and underwater vehicles ), amphibious vehicles (e.g. screw-propelled vehicles , hovercraft , seaplanes ), aircraft ( airplanes , helicopters , gliders and aerostats ) and space vehicles ( spacecraft , spaceplanes and launch vehicles ). This article primarily concerns
3773-519: The engines placed further forward, and succeeding generations of the Econoline introduced longer hoods. Another type of van specific to North America is the step van , named because of the design to facilitate users to step in and out of the vehicle. Widely used by delivery services, courier companies, and the parcel division of the US Postal Service and Canada Post, they are often seen driven with
3850-410: The environment. A related engine is the external combustion engine . An example of this is the steam engine. Aside from fuel, steam engines also need water, making them impractical for some purposes. Steam engines also need time to warm up, whereas IC engines can usually run right after being started, although this may not be recommended in cold conditions. Steam engines burning coal release sulfur into
3927-625: The first large-scale rocket program. The Opel RAK.1 became the first rocket car ; the following year, it also became the first rocket-powered aircraft . In 1961, the Soviet space program 's Vostok 1 carried Yuri Gagarin into space. In 1969, NASA 's Apollo 11 achieved the first Moon landing . In 2010, the number of motor vehicles in operation worldwide surpassed 1 billion, roughly one for every seven people. There are over 1 billion bicycles in use worldwide. In 2002 there were an estimated 590 million cars and 205 million motorcycles in service in
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#17328511284294004-650: The first sustained, controlled, reproducible flights. In 1903, the Wright brothers flew the Wright Flyer , the first controlled, powered aircraft, in Kitty Hawk, North Carolina . In 1907, Gyroplane No.I became the first tethered rotorcraft to fly. The same year, the Cornu helicopter became the first rotorcraft to achieve free flight. In 1928, Opel initiated the Opel-RAK program,
4081-459: The front independent suspension incorporated coil springs and hydraulic "Lever-type" shock absorbers while the rear springing was achieved by semi-elliptic leaf springs. In the 1960s light vans were often named simply by their load capacity, and the van at the time was often called simply the Morris 10/12 cwt . During its life the van underwent minor improvements under the metal. However, even in 1967
4158-663: The front seats, where the rest of the van body is cut off (leading to the terminology "cutaway"). From that point aft, only the chassis frame rails and running gear extend to the rear when the unit is shipped as an "incomplete vehicle". A second-stage manufacturer, commonly known as a bodybuilder, will complete the vehicle for uses such as recreational vehicles , small school buses , minibusses, type III ambulances , and delivery trucks. A large proportion of cutaway van chassis are equipped with dual rear wheels. Second-stage manufacturers sometimes add third weight-bearing single wheel "tag axles" for their larger minibus models. The term van in
4235-418: The ground. A Boeing 757 brake, for example, has 3 stators and 4 rotors. The Space Shuttle also uses frictional brakes on its wheels. As well as frictional brakes, hybrid and electric cars, trolleybuses and electric bicycles can also use regenerative brakes to recycle some of the vehicle's potential energy. High-speed trains sometimes use frictionless Eddy-current brakes ; however, widespread application of
4312-399: The manufacturer (wagon), or another company for more personal comforts ( conversion van ). Full-size vans often have short hoods, with the engine placed under the passenger cabin. A cutaway van chassis is a variation of the full-size van that was developed for use by second stage manufacturers . Such a unit has a van front end and driver controls in a cab body that extends to a point behind
4389-614: The more ubiquitous land vehicles, which can be broadly classified by the type of contact interface with the ground : wheels , tracks , rails or skis , as well as the non-contact technologies such as maglev . ISO 3833-1977 is the international standard for road vehicle types, terms and definitions. It is estimated by historians that boats have been used since prehistory ; rock paintings depicting boats, dated from around 50,000 to 15,000 BC, were found in Australia . The oldest boats found by archaeological excavation are logboats , with
4466-483: The motion, such as a brake and steering system. By far, most vehicles use wheels which employ the principle of rolling to enable displacement with very little rolling friction . It is essential that a vehicle have a source of energy to drive it. Energy can be extracted from external sources, as in the cases of a sailboat , a solar-powered car , or an electric streetcar that uses overhead lines. Energy can also be stored, provided it can be converted on demand and
4543-683: The oldest logboat found, the Pesse canoe found in a bog in the Netherlands, being carbon dated to 8040–7510 BC, making it 9,500–10,000 years old, A 7,000 year-old seagoing boat made from reeds and tar has been found in Kuwait. Boats were used between 4000 -3000 BC in Sumer , ancient Egypt and in the Indian Ocean. There is evidence of camel pulled wheeled vehicles about 4000–3000 BC. The earliest evidence of
4620-440: The policeman who came to stop the traffic behind the camera during the photo shoot. There was a second police officer out of sight further ahead up the road stopping any oncoming traffic. In the film Withnail and I a London Metropolitan Police J4 van overtakes Withnail and Marwood in their Jaguar Mark 2 . One of the police officers slides back the door of the van, motioning Withnail to pull over, before ordering him to "get in
4697-731: The popular vans include Maruti Suzuki Omni and the Maruti Suzuki Eeco . Early Japanese vans include the Kurogane Baby , Mazda Bongo , and the Toyota LiteAce . The Japanese also produced many vans based on the American flat nose model, but also minivans which for the American market have generally evolved to the long-wheelbase front-wheel drive form. The Nissan Prairie and Mitsubishi Chariot as well as microvans that fulfill kei car regulations, are popular for small businesses. The term
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#17328511284294774-466: The propeller has been tested on many terrestrial vehicles, including the Schienenzeppelin train and numerous cars. In modern times, propellers are most prevalent on watercraft and aircraft, as well as some amphibious vehicles such as hovercraft and ground-effect vehicles . Intuitively, propellers cannot work in space as there is no working fluid; however, some sources have suggested that since space
4851-463: The rate of deceleration or where the brakes have failed, several mechanisms can be used to stop a vehicle. Cars and rolling stock usually have hand brakes that, while designed to secure an already parked vehicle, can provide limited braking should the primary brakes fail. A secondary procedure called forward-slip is sometimes used to slow airplanes by flying at an angle, causing more drag. Motor vehicle and trailer categories are defined according to
4928-504: The rear panel work of the J4 virtually unchanged. The Sherpa remained in production in various forms until 2006. During this time, in various wheel-bases and track widths, it became The Freight Rover, LDV 200, LDV Pilot. The LDV Maxus was a completely new development produced jointly with Daewoo. During much of this time it also became available as a chassis-cab, pickup, tipper, Luton, Mini-bus and Camper (Motor Caravan.) A diesel-powered version of
5005-565: The shape of a cone or bell , some unorthodox designs have been created such as the aerospike . Some nozzles are intangible, such as the electromagnetic field nozzle of a vectored ion thruster. Continuous track is sometimes used instead of wheels to power land vehicles. Continuous track has the advantages of a larger contact area, easy repairs on small damage, and high maneuverability. Examples of vehicles using continuous tracks are tanks, snowmobiles and excavators. Two continuous tracks used together allow for steering. The largest land vehicle in
5082-462: The storing medium's energy density and power density are sufficient to meet the vehicle's needs. Human power is a simple source of energy that requires nothing more than humans. Despite the fact that humans cannot exceed 500 W (0.67 hp) for meaningful amounts of time, the land speed record for human-powered vehicles (unpaced) is 133 km/h (83 mph), as of 2009 on a recumbent bicycle . The energy source used to power vehicles
5159-440: The technology has been limited by overheating and interference issues. Aside from landing gear brakes, most large aircraft have other ways of decelerating. In aircraft, air brakes are aerodynamic surfaces that provide braking force by increasing the frontal cross section, thus increasing the increasing the aerodynamic drag of the aircraft. These are usually implemented as flaps that oppose air flow when extended and are flush with
5236-598: The test came in at 22.7 mpg ‑imp (12.4 L/100 km; 18.9 mpg ‑US ). This van became a familiar sight on British streets collecting and delivering mail in the Royal Mail livery of the Post Office . Although quite a successful light commercial, it sold mainly by virtue of keen pricing to large fleets, living after 1965 in the shadow of the all conquering front engined Ford Transit , as did several other British built 60s/70s light commercials such as
5313-472: The unique characteristics of 12- and 15-passenger vans and by following guidelines developed for their drivers, according to the U.S. National Highway Traffic Safety Administration (NHTSA). Many commercial vans are fitted with cargo barriers behind the front seats (or rear seats, if fitted) to prevent injuries caused by unsecured cargo in the event of sudden deceleration, collision, or a rollover. Cargo barriers in vans are sometimes fitted with doors permitting
5390-541: The use of a pulse jet was the V-1 flying bomb . Pulse jets are still occasionally used in amateur experiments. With the advent of modern technology, the pulse detonation engine has become practical and was successfully tested on a Rutan VariEze . While the pulse detonation engine is much more efficient than the pulse jet and even turbine engines, it still suffers from extreme noise and vibration levels. Ramjets also have few moving parts, but they only work at high speed, so their use
5467-519: The van was produced in Valladolid , Spain by SAVA ( "Sociedad Anónima de Vehículos Automóviles" ) , between 1965 and 1989 and sold successively under several names including SAVA J4 [ es ] and Pegaso J4. A London Metropolitan Police J4 (usually referred to as a Black Maria ) appears parked in the street on the cover of the Beatles Abbey Road . The van had been driven down by
5544-511: The vans were still shipped with synchromesh on the top three forward gears only. The engine lived in the driver's cabin between the two seats: the van was considered unusually noisy, even in the 1960s. A J4-based petrol-engined motor caravan was tested by Britain's Autocar magazine in 1967. It managed a maximum speed of 63 mph (101 km/h) and a time from 0–50 mph (80 km/h) of 20.2 seconds. The vehicle as tested weighed 2,910 pounds (1,320 kg) and overall petrol consumption for
5621-464: The world, the Bagger 293 , is propelled by continuous tracks. Propellers (as well as screws, fans and rotors) are used to move through a fluid. Propellers have been used as toys since ancient times; however, it was Leonardo da Vinci who devised what was one of the earliest propeller driven vehicles, the "aerial-screw". In 1661, Toogood & Hays adopted the screw for use as a ship propeller. Since then,
5698-642: The world. At least 500 million Chinese Flying Pigeon bicycles have been made, more than any other single model of vehicle. The most-produced model of motor vehicle is the Honda Super Cub motorcycle, having sold 60 million units in 2008. The most-produced car model is the Toyota Corolla , with at least 35 million made by 2010. The most common fixed-wing airplane is the Cessna 172 , with about 44,000 having been made as of 2017. The Soviet Mil Mi-8 , at 17,000,
5775-630: Was a Soviet-designed screw-propelled vehicle designed to retrieve cosmonauts from the Siberian wilderness. All or almost all of the useful energy produced by the engine is usually dissipated as friction; so minimizing frictional losses is very important in many vehicles. The main sources of friction are rolling friction and fluid drag (air drag or water drag). Wheels have low bearing friction, and pneumatic tires give low rolling friction. Steel wheels on steel tracks are lower still. Aerodynamic drag can be reduced by streamlined design features. Friction
5852-413: Was available with an extension to the rear of its long-wheelbase model to create a 15-passenger van. Vehicles have been sold as both cargo and passenger models, as well as in cutaway van chassis versions for second stage manufacturers to make box vans, ambulances, campers, and other vehicles. Second-stage manufacturers also modify the original manufacturer's body to create custom vans. In urban areas of
5929-644: Was of little practical use. In 1817, The Laufmaschine ("running machine"), invented by the German Baron Karl von Drais , became the first human means of transport to make use of the two-wheeler principle . It is regarded as the forerunner of the modern bicycle (and motorcycle). In 1885, Karl Benz built (and subsequently patented) the Benz Patent-Motorwagen , the first automobile, powered by his own four-stroke cycle gasoline engine . In 1885, Otto Lilienthal began experimental gliding and achieved
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