Lecture 2 Early Aviation Industries AVH 1103 – AVIATION HISTORY.
AVIATION HISTORY
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Transcript of AVIATION HISTORY
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AVIATION HISTORY
WEEK 11
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TEST REVISIONS
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Basic Aircraft Parts
Fuselage / Body
Wing TailEngine
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Basic Aircraft Parts
Fixed (Non-Moving)
• Fuselage or Aircraft Body
• Wing• Engines• Tail
Control Surfaces (Moving)
• Aileron for rolling• Elevator for pitching• Rudder for yawing
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Control Surfaces
Aileron
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Aileron for Rolling
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Control Surfaces
Elevator
Rudder
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Elevator for Pitching
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Rudder for Yawing
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Four Forces Acting On Airplane
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Lift
Low VelocityLow Velocity
High VelocityHigh Velocity
Aerofoil
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CHAPTER 6: PART 2
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Contents
• Aviation Weather
• Flying Instruments during Night and Bad Weather
• Modern Technologies in aircraft Instrumentation
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AVIATION WEATHER
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Introduction
• History– the very first aircraft had little to no flight
instruments– all weather flying was risky– navigation depended on pilot’s ability to use
landmarks– The first aircraft instruments is fuel & oil pressure
instruments: To warn of engine trouble so that the aircraft could be landed before engine failed).
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Aviation Weather
• Thunderstorms
• Wind Shear
• Icing
17
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Thunderstorms
• Thunderstorms: A violent storm of thunder and lightning, often accompanied by rain and sometimes (hail) frozen rain.
• Pilot is not allowed to land or take off in the face of an approaching thunderstorm.
• Pilot must avoid by at least 20 miles any thunderstorm identified as dangerous
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Icing
• Icing is the formation of ice on parts of a aircraft (wing, engine, aircraft antenna).
• Pilots and controllers need to be aware of the icing process.
• Effect of the icing– Reduces aircraft efficiency: decreasing thrust &
reducing lift. Aircraft become slow.– False indications on flight instruments.– Loss of radio communications,– Loss of operation of control surfaces, brakes, and
landing gear.
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How to avoid icing
• De-icing: The process of spraying a glycol solution on the wings of an aircraft to prevent the formation of ice during inclement weather conditions.
• Pilot must change altitude to get out of the icing as rapidly as possible.
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Wind shear
• Wind shear is a quick change in the wind speed & direction that can cause aircraft lose in control.
• If an aircraft experiences a sudden decrease in wind speed, it can reduce the lift on its wings to dangerously low values.
• Aircraft must be equipped with radar/ sensors that can alert pilots to wind-shear hazards.
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Cross-wind
• Cross-wind landing is when some amount of wind coming from the left or right of the aircraft.
• If a crosswind is strong enough it can make aircraft land under bad conditions and could cause structural damage to the aircraft's undercarriage.
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FLYING INSTRUMENTS DURING NIGHT & BAD WEATHER
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Flying Instrument
• As airmail pilots began flying at night and in all kinds of weather in 1920’s, new instruments were developed that had enabled aircraft to fly.
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VFR and IFR
• VFR (Visual Flight Rules): pilot (“see and avoid”)
• IFR (Instrument Flight Rules) : Pilot depends on
controller (ATC)
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Flying Instruments Developments
• Airport Beacon
• Navigational Aids System– DME,DVOR, ILS & ILS using GPS
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Airport Beacons• Bonfire beacons along airmail routes (1921)
• Experimental rotating light beacons (1923: Columbus-Dayton)
Rotating light beacon
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DVOR / DME• VOR: bearing of aircraft to radio station DVOR
– (receives the signal from the VOR-ground station (waypoint) and calculates the magnetic bearing to the station
• DME: distance from aircraft to radio station
• VOR and DME are usually collocated, providing pilot with bearing and distance.
Doppler VHF Omnidirectional Range Station (VOR)
Slant range= Distance, D, is the actual distance from the aircraft to the VOR
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ILS Components
2929
Localizer: horizontal guidance, indicates
alignment w/ runwayGlide Path: vertical guidance, indicates correct descent path
Needle indicates direction of runway.Centered Needle = Correct Alignment
Marker Beacons:
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Aircraft Equipment
– Approved position lights– Anti-collision light system– Weather Radar
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MODERN TECHNOLOGIES IN AIRCRAFT INSTRUMENTATION
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Six Basic InstrumentsAirspeed Indicator Attitude Indicator Altimeter
Turn Indicator Heading Indicator Vertical Speed Indicator
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Glass Cockpit
• A glass cockpit is an aircraft cockpit that feature EFIS (Electronic Flight Instrument System)
• Uses several computer displays that can be adjusted to show flight information as needed.
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Glass Cockpit Components
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Modern Technologies in aircraft Instrumentation
1. Primary Flight Display (PFD): • Displays airspeed, altitude, heading, attitude, vertical
speed and yaw. • Improve a pilot's situational awareness by reducing the
amount of time necessary to monitor the instruments. • Alerting the aircrew to potentially hazardous by changing
the color or shape of the display or by providing audio alerts.
2. Multifunction Control Display Unit (MCDU)• Displays navigational (aircraft’s current route plan) and
weather information from multiple systems (radar/ sensor)
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Modern Technologies in aircraft Instrumentation
3. Electronic Centralized Aircraft Monitor (ECAM): • Shows the aircraft’s systems conditions and engines
performance.• The upper ECAM screen displays engine, flaps
setting, fuel quantity and alert information and is named the E/WD (Engine/Warning Display) ;
• the lower ECAM displays the various systems parameters and is known as the SD (System Display).
• Classic mechanical backup instruments are still provided (anemometer, artificial horizon and altimeter).
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Modern Technologies in aircraft Instrumentation
4. The Flight Control Unit (FCU)• Integrates the Autopilot (AP) and Flight Director
switches and communicates with the MCDU.
• Autopilot (AP) - Computer device that can fly an airplane on its own.
• Mostly used on long flights. However, pilot is always present to monitor and check in whether the flight is going according to plan or not.
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Summary
• Flight instruments all together have made– navigation easier – communication easier– fault detection and warning indication
possible– takeoffs and landings easier– and most important flying safer
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Question Bank
1. Bad whether is one of the major hazards in flying and it has also caused many accidents. List and explain three types of bad weather and explain how a pilot can avoid it.
2. Explain the various instruments developed that had enabled aircraft to fly at night and in bad whether.
3. List four flight instruments found in an aircraft cockpit to assist the pilots in flying the aircraft.
4. Previously, aircrafts were flown without a radio communication. What problems had this caused to the aviators?
5. Aircraft instruments technology is every advance now compared to two decades ago. List and explain the functions of 4 modern technologies available in aircraft instrumentation.
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The End