This document discusses various topics related to transportation engineering including airports, railways, and different modes of transportation. It provides definitions and components of airports. The key aspects covered are:
- Airports have runways for takeoffs and landings, terminals for passengers, and aircraft parking areas. There are three types - international, regional, and domestic.
- Important airport components include runways, terminals, aircraft parking aprons, taxiways, aircraft stands, hangars, and control towers.
- Railways emerged during the industrial revolution to transport goods and people over long distances. Components include rails, ballast, sleepers, and stations.
- Modes of transportation discussed are air, water,
This document discusses various topics related to transportation engineering including airports, railways, and different modes of transportation. It provides definitions and components of airports. The key aspects covered are:
- Airports have runways for takeoffs and landings, terminals for passengers, and aircraft parking areas. There are three types - international, regional, and domestic.
- Important airport components include runways, terminals, aircraft parking aprons, taxiways, aircraft stands, hangars, and control towers.
- Railways emerged during the industrial revolution to transport goods and people over long distances. Components include rails, ballast, sleepers, and stations.
- Modes of transportation discussed are air, water,
This document discusses various topics related to transportation engineering including airports, railways, and different modes of transportation. It provides definitions and components of airports. The key aspects covered are:
- Airports have runways for takeoffs and landings, terminals for passengers, and aircraft parking areas. There are three types - international, regional, and domestic.
- Important airport components include runways, terminals, aircraft parking aprons, taxiways, aircraft stands, hangars, and control towers.
- Railways emerged during the industrial revolution to transport goods and people over long distances. Components include rails, ballast, sleepers, and stations.
- Modes of transportation discussed are air, water,
This document discusses various topics related to transportation engineering including airports, railways, and different modes of transportation. It provides definitions and components of airports. The key aspects covered are:
- Airports have runways for takeoffs and landings, terminals for passengers, and aircraft parking areas. There are three types - international, regional, and domestic.
- Important airport components include runways, terminals, aircraft parking aprons, taxiways, aircraft stands, hangars, and control towers.
- Railways emerged during the industrial revolution to transport goods and people over long distances. Components include rails, ballast, sleepers, and stations.
- Modes of transportation discussed are air, water,
Download as DOCX, PDF, TXT or read online from Scribd
Download as docx, pdf, or txt
You are on page 1of 6
Airport Engineering;
Introduction to airport and railway engineering
Important definition in airport and railways engineering Components of an airport Factors for the site selection of an airport Importance of the orientation and windrows Types of the airports Runways patterns, Factors affecting the length of the runway with numerical Railways Engineering Rails (Types, wear of rails, methods of reducing wear of rails, coning of wheel) Gauges (Classification of gauges, factors affecting choice of gauges) Ballast (Function of ballast, requirements of an ideal ballast) Sleepers (Types of sleeper, characteristics of an ideal sleeper, treatment of wooden sleepers) Creep (Causes of creep, improving method against creep) Misc. Topics (Selection of site for the railway station, soil stabilization etc.) Transportation Engineering Transportation Engineering is the application of technology and scientific principles to the planning, functional design, operation and management of facilities for any mode of transportation in order to provide for the safe, rapid, comfortable, convenient, economical and environmentally compatible movement of people and goods. Importance: The importance of transportation in the development of country is multidimensional. A country’s economic status depends upon how well served the country is by different modes of transport. All human beings are interacting over distance and time for food, shelter, work, business, recreation, and security. All agricultural and industrial raw materials, products, equipment are needed to be transported from one place to another. Modes of Transportation Air TransportAir Transport is the newest means of transport; it was introduced in 1903 but developed into full means of transporting people and goods in 1930s. The greatest of the air transportation started after the Second World War (WW11) This mode of transportation can be used for both domestic and international flights. Water Transport water transport is very important because it is the cheapest way of transporting bulky goods over a long distance. In the world, this is the system that carry a lot of the world's trade, majority of the bulky goods, materials and passengers pass through ocean waterways from one country to another at the cheapest cost. Land Transport Land Transport is further sub divided into two types: Roadways: Road Transport exist in all parts of the world, this involves the use of motor vehicles (cars, lorries, buses, bicycles, and trucks). It is relatively cheaper and faster. Road transport has a high capacity of carrying goods over short distances. Railways: Railways were developed during the period of industrial revolution in the 19th century, these was partly for political reasons and for economic reasons. In many countries, they were built especially to penetrate isolated regions and help promote political unity. The major advantage of railway transport includes provision of reliable services. It has ability of conveying heavy and bulky goods; it is also very cheap, safe and comfortable for passengers over a long distance. Airport Engineering Airport Engineering encompasses the planning, design, and construction of terminals, runways, and navigation aids to provide for passenger and freight service. Airport engineers design and construct airports. They must account for the impacts and demands of aircraft in their design of airport facilities. These engineers must use the analysis of predominant wind direction to determine runway orientation, determine the size of runway border and safety areas, different wing tip to wing tip clearances for all gates and must designate the clear zones in the entire port. What is an AIRPORT? An airport is a facility where passengers connect from ground transportation to air transportation. It is a location where aircraft such as airplanes, helicopters take off and land. Aircraft may also be stored or maintained at an airport. An airport should have runway for takeoffs and landings, buildings such as hangars and terminal buildings. Airport History The world's first airport was built in 1928 at Croydon near London (England). It was the main airport for London till it was closed down in 1959, after the World War II. It is now open as a visitor centre for aviation. Types of Airports There are three types of Airports: International Airports Regional Airports Domestic Airports International Airports An international airport has direct service to many other airports. • Handle scheduled commercial airlines both for passengers and cargo. • Many international airports also serve as "HUBS", or places where non-direct flights may land and passengers switch planes. • Typically equipped with customs and immigration facilities to handle international flights to and from other countries. • Such airports are usually larger, and often feature longer Runways and facilities to accommodate the large aircraft. (FBO, MRO etc..) Regional Airports A regional airport is an airport serving traffic within a Relatively small or lightly populated geographical area. • A regional airport usually does not have customs and Immigration facilities to process traffic between countries. • Aircraft using these airports tend to be smaller business jets or private aircraft (general aviation). The International Civil Aviation Organization (ICAO) The International Civil Aviation Organization (ICAO), an agency of the United Nations, codifies the principles and techniques of international air navigation and fosters the planning and development of international air transport to ensure safe and orderly growth Railways Engineering Railway engineering is an engineering discipline that deals with the design, construction and operation of railway systems. Its roots are in the early 19th century when the need for specialized engineers capable of dealing with the unique problems of the new railway systems emerged. Railway Stations A railway station may be defined as the defacto (approximate) headquarters of the running train without authority of which trains cannot move. In other words they form field control units as well as writing places. Railway station is a selected place and serves the purpose of movement control of wagons and provides passenger amenities. Important Definitions and Components of an Airport.. Some Basic Definitions Aircraft: “Any machine which finds its support in the atmosphere due to reactions of the air is defined as an Aircraft”. It is a general term which includes aero-plane, helicopter, rocket, etc. It may be lighter or heavier than air. subsonic aircraft- Aircraft speed is less than the speed of sound supersonic aircraft- Aircraft speed is greater than the speed of sound. Aerodrome: Any defined area on land or water intended to be used for the arrival and departure of an aircraft is called aerodrome. Airport: It is an aerodrome which is principally intended for the use of commercial services. It is provided with custom facilities. If it service any international traffic. i.e if it is designed as an international airport. When an airport does not serve international traffic, it is known as non- international or domestic airport. Airfield: it is an area which is used for landing and take-off of an aircraft. Landing area: An airport consists of landing area and terminal area. Landing area is used for landing & take-off of an aircraft. Runway Taxiway Terminal area: It includes the following Terminal building Aircraft apron Gate position Hangars (Shelters) Automobile parking area Runway: It is paved long & narrow rectangular strip which is actually used for landing & take-off of aero- planes. Taxiway: It is a paved way over which an aero-plane may taxi while going to & from runway and loading apron. Taxiways also connect two neighboring runway, runway with a service and maintenance hangar. Components of An Airport Layout Runway Terminal Building Apron Taxiway Aircraft Stand Hanger Control Tower Parking 1. Runways A runway is the area where an aircraft lands or takes off. It can be grass, or packed dirt, or a hard surface such as asphalt or concrete. Runways have special markings on them to help a pilot in the air to tell that it is a runway (and not a road) and to help them when they are landing or taking off. Runway markings are white. 2. Terminal Buildings Also known as airport terminal, these buildings are the spaces where passengers board or alight from flights. These buildings house all the necessary facilities for passengers to check-in their luggage, clear the customs and have lounges to wait before disembarking. The terminals Can house cafes, lounges and bars to serve as waiting areas for passengers. Ticket counters, luggage check-in or transfer, security checks and customs are the basics of all airport terminals. Large airports can have more than one terminal that are connected to one another through link ways such as walkways, sky-bridges or trams. Smaller airports usually have only one terminal that houses all the required facilities. 3. Aprons Aircraft aprons are the areas where the aircraft park. Aprons are also sometimes called ramps. They vary in size, from areas that may hold five or ten small planes, to the very large areas that the major airports have. Unlike the runways or taxiways, vehicles can use aprons. Taxiway A taxiway is a path on an airport connecting runways with ramps, hangars, terminals and other facilities. They mostly have hard surface such as asphalt or concrete, although smaller airports sometimes use gravel or grass. Aircraft Stand A portion of an apron designated as a taxiway and intended to provide access to aircraft stands only. Aircraft Stand A portion of an apron designated as a taxiway and intended to provide access to aircraft stands only. Control Tower A tower at an airfield from which air traffic is controlled by radio and observed physically and by radar. Parking Parking is a specific area of airport at which vehicles park Runway Lightening These lights are used to assist pilot in to identify the runway. • GREEN THRESHOLD LIGHTS : Line the runway edge • RED LIGHTS : Mark the end of runway • BLUE LIGHTS : Run alongside taxiways • While runways have YELLOW or WHITE lights marking their edges Airport Site Selection Factors Regional plan Airport use Proximity to other airports Ground accessibility Topography Obstructions Visibility Wind Noise Nuisance Grading, drainage and soil characteristics Future development Availability of utilities from town Economic considerations Type of Propulsion: The size of aircraft, its circling radius, speed characteristics, weight carrying capacity, noise nuisance etc. depend upon the type of propulsion of the aircraft. the basic runway length also depends on the type of propulsion used in aircraft. Size of aircraft: The Size of aircraft involves following important dimensions, (i) wing span (ii) height (iii) distance b/w main gears i.e. gear tread (iv) wheel base & tail width. Minimum Turning radius: In order to decide the radius of taxiway, its very essential to study the geometry of turning movement of aircraft. Minimum Turning radius: While taking a turn, the nose gear is steered and therefore, makes an angle with the axis of the main gear, called angle of rotation. The point of intersection of main gear and line through axis of steered nose gear is called point of rotation. The maximum angle of rotation is 50 ﹾ- 60◦ The line joining the center of rotation and the tip of the farthest wing of the aircraft is known minimum turning radius Minimum Circling Radius: There is certain minimum radius with which the aircraft can take turn in space. Its radius depends upon the type of aircraft, air traffic volume & weather conditions. The radii recommended for different types of aircraft are as follows. Small general aviation aircraft = 1.6 km Bigger aircraft = 3.2 km Piston engine aircraft = 13 km Jet engine aircraft = 80 km Speed of Aircrafts: The speed of aircraft can be defined in two ways. i.e. Cruising speed or air speed. Cruising speed is the speed of aircrafts with respect to the ground, when the aircrafts is flying in air at its maximum speed. Air speed is the speed of aircraft relative to the wind. - If the aircraft is flying at a speed of 500 kmph & there is a head wind of 50 kmph, air speed will be 450 kmph. -Aircraft capacity: The number of passengers, baggage & fuel that can be accommodated in the aircrafts depends upon the capacity of aircraft. -Weight of aircraft & wheel configuration: -Weight of the aircraft directly influence the length of the runway as well as the structural requirements i.e. the thickness of the runway, taxiway, apron & hangars. Jet Blast: This is the blast that comes out of the jet engine at the rear of the aircraft and provides the force movement of the aircraft. ñBut, if we consider it in case where the aircraft is standing and the jet blast is coming from the rear, that is so hot and it creates a severe condition for the things on which it will be falling. ñSo the severity is going to depend on two things; one is the height of the tail pipe from the ground angle of the tail pipe through which this jet blast will be coming out at the tail end. So if it is in the upward direction then it will go up if it is in the downward direction it will create a pro effect on the pavement on which the aircraft is standing and therefore there is a need to erect the blast fences which can control the damage to the building or damage to the pavement. Fuel spillage: At loading aprons & shelter it is difficult to avoid spillage completely, but effort should be made to bring it within minimum limit. The flexible pavements are seriously affected by the fuel spillage. Airport Classification Based on Take-off & Landing Conventional Take off & Landing Airport Runway length > 1500 m -Reduced Take-Off & Landing Airport -Runway length 1000 to 1500 m Short Take-Off & Landing Airport -Runway length 500 to 1000 m Vertical Take-Off & Landing Airport -Operational area 25 to 50 sq.m ICAO Classification: Based on Geometric Design-The classification has been done by using code letters viz. A to E in which the A type of airport has the longest runway length and E type has the shortest length.