46-Shashank Hal Ppt

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INDUSTRIAL INTERACTION

PRESENTAIONON

Presented by:-

Shashank Kushwaha

EC 4th year

Univ. Roll No.- 1014131059

September4,2013


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OVERVIEW

ULTRASONIC SENSOR

FUEL QUANTITY GAUGING

GROUND REFUELING PANNEL

FLIGHT DATA RECORDER

IDENTIFICATION FRIEND OR FOE

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ULTRASONIC SENSOR

Ultrasonic Sensors are used to effectively sense the level of fuel ina tank by sensing the distance of the sensor head from the fuel

level.

The sensor unit consists of an ultrasonic transducer and a

microprocessor which carries out the signal processing and

converts the transducer output to an analog voltage.

The output varies linearly to the target distance. The ultrasonic

transducer is used for both transmitting and receiving.IndustrialInteractiononHAL

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ULTRASONIC SENSOR

Ultrasonic signals are transmitted from the transducer and the pulsesare reflected back from the fuel surface, received and decoded by the

sensor.

By measuring the elapsed time from the acoustic signal the fuel level

is determined.

Systems typically use a transducer which generates sound waves in

the ultrasonic range, above 18,000 hertz, by turning electrical energy

into sound, then upon receiving the echo turn the sound waves into

electrical energy which can be measured and displayed. IndustrialInteractiononHAL

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Computes the quantity of fuel left in service tank.

It is an electronic system based on the principle of variation of capacitance

with change in dielectric medium.

It consists of uniform cylindrical shaped capacitor with the fuel acting as

the dielectric.

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As the fuel gets consumed , the fuel is replaced by air as

dielectric and there is a change in capacitance.

So, the remaining fuel in the service tank can be calculated on

the basis of variation in capacitance.

Fuel quantity gauge is of utmost importance when

Only service tank is left with fuel.

Flow metering system fails.

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The system comprises of

A capacitance based gauging probe.

Cable assembly.

Sensing amplifier box.

The gauging probe assembly in the fuel tank is connected to the sensingbox by means of cable assembly.

Depending on the fuel level in the tank , the capacitance formed is

sensed and amplified by the amplifier box and the data is sent to the

electronic display in the cockpit. IndustrialInteractiononHAL

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GROUND REFUELING PANNEL (GRP)

Ground Refueling Panel (GRP) is designed to control the Refueling/Defueling and monitoring the fuel status of the Fuselage tank, LH wing

tank, RH wing tank, LH drop tank and RH drop tank on the ground of

HJT36.

Fuselage and Wing Tanks are mounted with a fuel sensing probe forgauging along with level switches which provides Low Level (L/L) and

High Level (H/L) signals depending upon the fuel quantity available in

the tank.

Signals received from all the level switches mounted on the probes andthe level switches mounted in the drop tanks are fed to respective logic

circuit. The outputs of logic circuits are displayed by LEDs which

indicate the fuel level of individual tank.

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STATUS LED

Empty - YELLOW

Not full - RED

Full - GREEN


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FLIGHT DATA RECORDER

A flight data recorder (FDR) (also ADR, for accident data recorder) is anelectronic device employed to record any instructions sent to any

electronic systems on an aircraft. It is a device used to record specific

aircraft performance parameters.

Another kind of flight recorder is the cockpit voice recorder (CVR),which records conversation in the cockpit, radio communications

between the cockpit crew and others (including conversation with air

traffic control personnel), as well as ambient sounds.

Both of these functions have been combined into a single unit, popularlyreferred to as a BLACKBOX.

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PARAMETERS OF FDR

System records automatically 6 continuously changing parameters which are:

1) Altitude

2) Engine speed

3) Aircraft speed

4) Vertical acceleration

5) Horizontal acceleration

6) Turn Anal of stabilizer

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IDENTIFICATION FRIEND OR FOE (IFF)

IFF is an electronic system which can determine the intent of an

aircraft with the speed of the fastest computer.

A related system is used for air traffic control at civilian airports.

Modern IFF is a two-channel system, with one frequency (1030

megahertz) used for the interrogating signals and another (1090

megahertz) for the reply.

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MODES OF IFF

Mode 1 provides 2-digit octal mission code. (military only can bechanged in flight)

Mode 2 provides 4-digit octal unit code. (military only can't bechanged in flight)

Mode 3/A provides a 4-digit octal identification code for theaircraft, assigned by the air traffic controller. (military and civilian)

Mode C provides 4-digit octal code for aircraft's pressure altitude.

(military and civilian)

Mode 4 provides a 3-pulse reply to crypto coded challenge.(military only)

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IFF MODES WITH INTERROGATION


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46-Shashank Hal Ppt