puneet ppt22

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SUMMER TRAINING REPORT- 2010

HINDUSTAN AERONAUTICS LIMITEDACCESSORIES DIVISION, LUCKNOW

INSTITUTE OF ENGINEERING AND TECHNOLOGYLUCKNOW

Submitted to:Mr. D.K SRIVASTAVA

SENIOR MANAGER, A.L.HHINDUSTAN AERONAUTICS LIMITEDACCESSORIES DIVISION, LUCKNOW

Submitted by:PUNEET TRIVEDI

B.TECH FINAL YEARELECTRONICS ENGINEERING

ROLL NO. 2805231003


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( )industan Aeronautics Limited HAL came intoexistence on .st October 1964

The Company was formed by the merger of HindustanAircraft Limited with Aeronautics India Limited and

, .Aircraft Manufacturing Depot Kanpur

,It was late Seth Walchand Hirachand who set up HindustanAircraft Limited at Bangalore in association with the.erstwhile princely State of Mysore in 23 December 1940

The Government of India became a shareholder in March 1941

.and took over the Management in 1942


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HAL(HINDUSTAN AERONAUTICALS LIMITED)is a navratna public sectorunit and is presently ranked 34 among the global defence company.

HAL employees more than 30000 experinced personnel distributed.There are 19production division and 9 R&D centers developed across the country located at

Banglore ,Kanpur, Korwa, Nasik, Hyderabad,Lucknow.

Banglore is the corporate office of all the division.

HAL also plays a major role in missile projects of the country.

Major production range are SU-30MKI, JAGUAR, HAWK, DORNIER228, DHRUV(ADVANCED LIGHT HELICOPTER), CHEETAL and CHETAK helicopters.The limited series production of LCA, IJT, and LCH has commenced and will beintroduced in the service shortly.

INTRODUCTION


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:HAL has made substantial progress in its current projects

Dhruv , which is Advanced Light Helicopter( )ALHTejas - Light Combat Aircraft (LCA)

( )Intermediate Jet Trainer IJT Various military and civil upgrades.

HAL has played a significant role for India's space

programs by participating in the manufacture ofstructures for Satellite Launch Vehicles like

PSLV ( )Polar Satellite Launch Vehicle SLV ( -Geo synchronous Satellite Launch

)VehicleIRS ( )Indian Remote SatelliteINSAT ( )Indian National Satellite


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Acccessories Division Lucknow

Mechanical Factory Fuel Factory Instrumentation Factory SU - 30


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Gyroscopic instruments

Radio magnetic indicator(RMI)

Transformer rectifier unit(TRU)

Tachometer

Thermometric probe

INSTRUMENT FACTORY

Various projects running and manufactured ininstrument factory are:-


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Electronic Block PIN 4867-5

The electronic block provides an artificial feel of forces on joystick to the pilot duringpitching(Nose up/down) of the aircraft.

Units input - air speed and altitude from capsule unit

Units output - electrical signals 0-100 micro A. to drive actuator for increase feel offorce of decrease feel of force.

The active computer circuit is receiving speed and altitude data (E and ES) from capsuleunit.

These data are analyzed by computer circuit, which supplies a voltage whichvaries with pneumatic input data i.e. E = f(E- ES1) volt.

This voltage is compared with the voltage RF from follow up unit(feedback from actuator)the error voltage EF-RF resulting from the comparison is amplified and transmitted to thepower amplifier which supplies either data E1(high aircraft speed)or E2(low aircraft speed)of the actuator .

Thus electronic block is controlling the actuator position (increase feel of forces or

decrease feel of forces) according to the received pneumatic data.


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Amplifier PIN 7298792

The amplifier is used to regulate HOT & COLD air of cabin by opening orclosing of the temperature control volve and bypass volve.

The HOT & COLD air comes from the cooling unit which consists of a

compressor,a heat exchanger

The principle is based on amplification and servomechanism.

Units input i) Cabin temperature sensor (2000 at 25c)

ii)Duct temperature sensor (2000 at 25c)

Units output operating voltage 115Vac 2.5% for temperature control volve

and bypass volve.


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Cabin sensors SpeedContr

olAmplifier

Thyristr

Lower LimitSensor Bridge

Low

Limita

mplifi

er

Tachometergeneator

Volves

Volves

Preset R

Slaving Bridge

Duct SensorBridge

Pre

amplifier

Mainampli fie

r

Negative feedback

ofSpeedLinearization

Servo Motor and Control

Ampliefier

BlockDiagram


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GENERAL BLOCK DIAGRAM OF SYSTEM

Fuel Quantity and FlowMetering System

STR7-51

FUEL Flow

MeteringPortion

Fuel Quantity

GaugePortion

Automatic

ControlPortion


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FCG PROBE(LCA)


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Function:LCA FCG probe are used fuel content gauging of internal fuel tanks.Some of the probes arewith built in independent level switches (high/low level) along with fuel content gauging.

Principal:

a)Fuel Content Gauging Probe : principle of capacitance gauging.

b) Fuel Level Switches : principle of Weins-Bridge oscillator.

Construction:

a) FCG Probe:It consists of two concentric alluminium alloy tubes insulated from each other to formcapacitance plates.b) Fuel level switches:The level sensing is achieved by using 2 concentric tubes of shorter lengths and of largerdiameter than those of main gauging probes.

FCG PROBE(LCA)

TEMPERATURE SENSOR


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TEMPERATURE SENSORPIN 1722.00.000

Function :Temperature sensor used in helicopter to sense the temperature of the medium in which

sensitive ports (bulb) of the unit is immersed

Principle of operation :Increase in resistance of metal with increase in temperature

Construction :

Consists of mixed resistance temperature detector, wound on an insulated former, theseare mounted in a tabular body closed at one end.

Working :Due to change in temperature resistance of temperature detector changes and appropriate

signal is sent to temperature detector

Specification :Insulation resistance > 20m ohmlength = 82.5-83.5mmweight = 25gms max.

used in ALH

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