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An aircraft is any machine or device, such as an airplane, helicopter, glider, or dirigible, that is capable of atmospheric flight;
the general name given to a vehicle whose operational medium is air and which supports itself in the Earth's atmosphere by means of lift. Lift is produced through specially shaped fixed wings attached to the aeroplane's body or fuselage; these alter the airflow so that the pressure distribution of the air over the wing creates an upward force.
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An automobile, usually called a car (an old word for carriage) or a truck, is a wheeled vehicle that carries its own engine. (Older terms include motor car, with "motor" referring to what is now usually called the engine, and horseless carriage.) It has seats for the driver and, almost without exception, for at least one passenger.
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Hot air balloons are the oldest successful human flight technology, dating back to the Montgolfier brothers' invention in France in 1783. The first manned flight was made on November 21, 1783, in Paris by Pilātre de Rozier and the Marquis d'Arlandes.
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A motorcycle (or motorbike) is a two-wheeled vehicle powered by an engine. The wheels are in-line, and at higher speed the motorcyle remains upright and stable by virtue of gyroscopic forces; at lower speeds continual readjustment of the steering by the rider gives stability. The rider sits astride the vehicle on a seat, with hands on a set of handlebars which are used to lean the motorcycle, and feet on a set of "footpegs" or "pegs" which stick out from the chassis.
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The field of transport has several aspects: loosely they can be divided into a triad of infrastructure, vehicles, and operations. Infrastructure includes the transport networks (roads, railways, airways, canals, pipelines, etc.) that are used, as well as the nodes or terminals (such as airports, railway stations, bus stations and seaports). The vehicles generally ride on the networks, such as automobiles, trains, airplanes. The operations deal with the control of the system, such as traffic signals and ramp meters, railroad switches, air traffic control, etc, as well as policies, such as how to finance the system (e.g. use of tolls or gasoline taxes in the case of highway transport).
Broadly speaking, the design of networks are the domain of civil engineering and urban planning, the design of vehicles of mechanical engineering and specialized subfields such as nautical engineering and aerospace engineering, and the operations are usually specialized, though might appropriately belong to operations research or systems engineering.
See also: Technology, Travel Posters, Toys, UK Posters |
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Products related to Transportation:
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electronics,
garden,
kitchen,
magazines,
music,
photo,
posters,
software,
tools,
toys,
VHS,
videogames
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