AEROPLANE VISUAL LANDING GEAR SYSTEM WITH

TYRE INFLATION SYSTEM

1
 TABLE OF CONTENT
S.NO CONTENT PAGE NO

SYNOPSIS 7

1 INTRODUCTION 9

2 LITERATURE REVIEW 11

3 DESCRIPTION OF EQUIPMENT 17

4 DESIGN & DRAWING 31

5 WORKING PRINCIPLE 35

6 MERITS AND DEMERITS 37

7 APPLICATION 39

8 LIST OF MATERIALS 41

9 COST ESTIMATION 45

10 CONCLUSION 48

REFERENCE 50

PHOTOGRAPHY 51

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SYNOPSIS

SYNOPSIS

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 In the development of the landing gear system, many changes and

improvements have occurred. One of the outstanding differences is the large

variety of devices which are now operated by hydraulic power. In early

classes, there was no hydraulic system, and power requirements were met by

means of air or electricity. Along with constantly improving landing gear

design has gone a constant extension and diversification of the use of

hydraulic power.

Proper tire inflation pressure improves fuel economy, reduces braking

distance, improves handling, and increases tire life, while under inflation

creates overheating and can lead to accidents. Approximately 3/4 of all

automobiles operate with at least one underinflated tire. The main causes of

under inflation are natural leakage, temperature changes, and road hazards.

Drivers typically do not check tire pressure unless they notice unusual

vehicle performance. Visual checks are often insufficient to determine under

inflation.

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 CHAPTER – 1

INTRODUCTION

1. INTRODUCTION

5
COMPARATIVE ADVANTAGES OF HYDRAULIC POWER

Hydraulic systems possess numerous advantages over other systems of

power operation. They are light in weight; they are simple and extremely
reliable, requiring a minimum of attention and maintenance. Hydraulic
controls are sensitive, and afford precise controllability.
Because of the low inertia of moving parts, they start and stop in
complete obedience to the desires of the operator, and their operation is
positive. Hydraulic systems are self-lubricated; consequently there is little
wear or corrosion. Their operation is not apt to be interrupted by salt spray or
water.
Finally, hydraulic units are relatively quiet in operation, an important
consideration when detection by the enemy must be prevented.
Therefore, in spite of the presence of the two power sources just
described, hydraulic power makes its appearance on the submarine because
of the fact that its operational advantages, when weighed against the
disadvantages enumerated for electricity and air in the preceding paragraphs,
fully justify the addition of this third source of power to those available in
the modern submarine.

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 CHAPTER-2

LITERATURE SURVAY

2. LITERATURE SURVEY
7
Solenoid valves:

A solenoid valve is an electromechanically operated valve. The valve

is controlled by an electric current through a solenoid: in the case of a two-
port valve the flow is switched on or off; in the case of a three-port valve, the
outflow is switched between the two outlet ports. Multiple solenoid valves
can be placed together on a manifold.

Solenoid valves are the most frequently used control elements in fluidics.
Their tasks are to shut off, release, dose, distribute or mix fluids. They are
found in many application areas. Solenoids offer fast and safe switching,
high reliability, long service life, good medium compatibility of the materials
used, low control power and compact design.

Besides the plunger-type actuator which is used most frequently, pivoted-

armature actuators and rocker actuators are also used.

Operation

A solenoid valve has two main parts: the solenoid and the valve. The
solenoid converts electrical energy into mechanical energy which, in turn,
opens or closes the valve mechanically. A direct acting valve has only a
small flow circuit, shown within section E of this diagram (this section is
mentioned below as a pilot valve). In this example, adiaphragm piloted valve
multiplies this small pilot flow, by using it to control the flow through a
much larger orifice. Solenoid valves may use metal seals or rubber seals, and
may also have electrical interfaces to allow for easy control. A spring may be
used to hold the valve opened (normally open) or closed (normally closed)
while the valve is not activated.

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A- Input side

B- Diaphragm

C- Pressure chamber

D- Pressure relief passage

E- Solenoid

F- Output side

The diagram to the right shows the design of a basic valve, controlling
the flow of water in this example. At the top figure is the valve in its closed
state. The water under pressure enters at A. B is an elastic diaphragm and
above it is a weak spring pushing it down. The function of this spring is
irrelevant for now as the valve would stay closed even without it. The
diaphragm has a pinhole through its center which allows a very small
amount of water to flow through it. This water fills the cavity C on the other

9
side of the diaphragm so that pressure is equal on both sides of the
diaphragm, however the compressed spring supplies a net downward force.
The spring is weak and is only able to close the inlet because water pressure
is equalized on both sides of the diaphragm.

In the previous configuration the small passage D was blocked by a

pin which is the armature of the solenoid Eand which is pushed down by a
spring. If the solenoid is activated by drawing the pin upwards via magnetic
force from the solenoid current, the water in chamber C will flow through
this passage D to the output side of the valve. The pressure in chamber C
will drop and the incoming pressure will lift the diaphragm thus opening the
main valve. Water now flows directly from A to F.

When the solenoid is again deactivated and the passage D is closed

again, the spring needs very little force to push the diaphragm down again
and the main valve closes. In practice there is often no separate spring, the
elastomer diaphragm is molded so that it functions as its own spring,
preferring to be in the closed shape.

From this explanation it can be seen that this type of valve relies on a
differential of pressure between input and output as the pressure at the input
must always be greater than the pressure at the output for it to work. Should
the pressure at the output, for any reason, rise above that of the input then the
valve would open regardless of the state of the solenoid and pilot valve.

In some solenoid valves the solenoid acts directly on the main valve. Others
use a small, complete solenoid valve, known as a pilot, to actuate a larger
valve. While the second type is actually a solenoid valve combined with a
pneumatically actuated valve, they are sold and packaged as a single unit
referred to as a solenoid valve. Piloted valves require much less power to
control, but they are noticeably slower. Piloted solenoids usually need full
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power at all times to open and stay open, where a direct acting solenoid may
only need full power for a short period of time to open it, and only low
power to hold it.

Production

Solenoid valves are often mass produced in 3 main parts: the core
tube, the nucleo and the coil.

Deep drawn Core Tube made by Pressteck (Italy)

The core tube[1] is a metal shell that is produced by deep drawing because
this process requires considerably less raw material and permits complex
designs that integrate solutions (example O-ring seats, formed flanges and
closed tube ends ) which reduce the amount of parts per valve .

The nucleo is typically a turned metal part, that slides within the core tube,
opening or closing the valve. Its' initial position is normally maintained by a
spring.

The coil is a tightly bound copper wire which is wrapped around the core
tube and induces the movement of the nucleo.

Types

Many variations are possible on the basic, one way, one solenoid valve
described above:

• one or two solenoid valves;

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• direct current or alternating current powered;

• different number of ways and positions;

Common uses

Solenoid valves are used in fluid power pneumatic and hydraulic

systems, to control cylinders, fluid power motors or larger industrial valves.
Automatic irrigation sprinkler systems also use solenoid valves with an
automatic controller. Domestic washing machines and dishwashers use
solenoid valves to control water entry into the machine. Solenoid valves are
used in dentist chairs to control air and water flow. In the paintball industry,
solenoid valves are usually referred to simply as "solenoids." They are
commonly used to control a larger valve used to control the propellant
(usually compressed air or CO2). In addition to this, these valves are now
been used in household water purifiers (RO systems).

Besides controlling the flow of air and fluids, solenoids are used in
pharmacology experiments, especially for patch-clamp, which can control
the application of agonist or antagonist.

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 CHAPTER-3

DESCRIPTION OF EQUIPMENT

3. DESCRIPTION OF EQUIPMENT

3.1 COMPRESSOR

A gas compressor is a mechanical device that increases the

pressure of a gas by reducing its volume. Compressors are similar to pumps:
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both increase the pressure on a fluid and both can transport the fluid through
a pipe. As gases are compressible, the compressor also reduces the volume
of a gas. Liquids are relatively incompressible, so the main action of a pump
is to transport liquids.

The key part of any facility for supply of compressed air is by means using
reciprocating compressor. A compressor is a machine that takes in air, gas at
a certain pressure and delivered the air at a high pressure.

Compressor capacity is the actual quantity of air compressed and

delivered and the volume expressed is that of that of the air at intake
conditions namely at atmosphere pressure and normal ambient temperature.

Clean condition of the suction air is one of the factors, which decides
the life of a compressor. Warm and moist suction air will result increased
precipitation of condense from the compressed air.

Compressor may be classified in two general types.

1. Positive displacement compressor

2. Turbo compressor

Positive displacement compressors are most frequently employed for

Compressed air plant and have proved highly successful and supply air for
pneumatic control application.

The types of positive compressor

1. Reciprocating type compressor

2. Rotary type compressor

Turbo compressors are employed where large of air required at low

discharge pressures. They cannot attain pressure necessary for pneumatic

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control application unless built in multistage designs and are seldom
encountered in pneumatic service.

RECIPROCATING COMPRESSORS:

Built for either stationary (or) portable service the reciprocating

compressor is by far the most common type. Reciprocating compressors lap
be had is sizes from the smallest capacities to deliver more than
500m3/min.In single stage compressor, the air pressure may be of 6 bar
machines discharge of pressure is up to 15bars.Discharge pressure in the
range of 250bars can be obtained with high pressure reciprocating
compressors that of three & four stages. Single stage and 1200 stage models
are particularly suitable

For applications, with preference going to the two stage design as

soon as the discharge pressure exceeds 6 bars, because it in capable of
matching the performance of single stage machine at lower costs per driving
powers in the range.

The compressibility of the air was first investigated by Robot Boyle in 1962
and that found that the product of pressure and volumes of particular
quantity of gas.

The usual written as

PV =C (or) P1V1 =P2V2

In this equation the pressure is the absolute pressured which for free is
about 14.7Psi and is of courage capable of maintaining a column of mercury,
nearly 30 inches high in an ordinary barometer.

3.2 VALVES

SOLENOID VALVE
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 The directional valve is one of the important parts of a pneumatic
system. Commonly known as DCV; this valve is used to control the
direction of air flow in the pneumatic system. The directional valve does this
by changing the position of its internal movable parts.

This valve was selected for speedy operation and to reduce the manual
effort and also for the modification of the machine into automatic machine
by means of using a solenoid valve.

A solenoid is an electrical device that converts electrical energy into

straight line motion and force. These are also used to operate a mechanical
operation which in turn operates the valve mechanism. Solenoid is one is
which the plunger is pulled when the solenoid is energized.

The name of the parts of the solenoid should be learned so that they
can be recognized when called upon to make repairs, to do service work or
to install them.

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Parts of a solenoid valve

1. Coil

The solenoid coil is made of copper wire. The layers of wire are
separated by insulating layer. The entire solenoid coil is covered with a
varnish that is not affected by solvents, moisture, cutting oil or often fluids.
Coils are rated in various voltages such as 115 volts AC,230volts
AC,460volts Ac,575 Volts AC.6Volts DC,12Volts DC, 24 Volts DC, 115
Volts DC &230Volts DC. They are designed for such Frequencies as 50Hz
to 60Hz.

2. Frame

The solenoid frame serves several purposes. Since it is made of

laminated sheets, it is magnetized when the current passes through the coil.

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The magnetized coils attract the metal plunger to move. The frame has
provisions for attaching the mounting. They are usually bolted or welded to
the frame. The frame has provisions for receivers, the plunger. The wear
strips are mounted to the solenoid frame, and are made of materials such as
metal or impregnated less Fiber.

3. Solenoid plunger

The solenoid plunger is the mover mechanism of the solenoid. The

plunger is made of steel laminations which are riveted together under high
pressure, so that there will be no movement of the lamination with respect to
one another. At the top of the plunger a pin hole is placed for making a
connection to some device. The solenoid plunger is moved by a magnetic
force in one direction and is usually returned by spring action.

Solenoid operated valves are usually provided with cover either the
solenoid or the entire valve. This protects the solenoid from dirt and other
foreign matter, and protects the actuator. In many applications it is necessary
to use explosion proof solenoids.

WORKING OF SOLENOID VALVE:

The solenoid valve has 5 openings. These ensure easy exhausting of

5/4Valve.the spool of the 5/4 valve slide inside the main bore according to
spool position: the ports get connected and disconnected.

The working principle is as follows.

Position-1

When the spool is actuated towards outer direction port ‘P’ gets

Connected to ‘B’ and ‘S’ remains closed while ‘A’ gets connected to ‘R’.
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Position-2

When the spool is pushed in the inner direction port ‘P’ and ‘A’

Gets connected to each other and ‘B’ to ‘S’ while port ‘R’ remains closed.

SOLINOID VALVE (OR) CUT OFF VALVE:

The control valve is used to control the flow direction is called cut off
valve or solenoid valve. This solenoid cutoff valve is controlled by the
electronic control unit.

In our project separate solenoid valve is used for flow direction of vice
cylinder. It is used to flow the air from compressor to the single acting
cylinder.

3.2.2 FLOW CONTROL VALVE:

In any fluid power circuit, flow control valve is used to control the
speed of actuator. The flow control can be achieved by varying the area of
flow through which the air in passing.

When area is increased, more quantity of air will be sent to actuator as

a result its speed will increase. If the quantity of air entering into the actuator
is reduced, the speed of the actuator is reduced.

3.2.3 PRESSURE CONTROL VALVE:

The main function of the pressure control valve is to limit (or) Control
the pressure required in a pneumatic circuit. Depending upon the method of
controlling they are classified as

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1. Pressure relief valve

2. Pressure reducing valve

3.3. HOSES:

Hoses used in this pneumatic system are made up of polyurethane.

These hose can with stand at a maximum pressure level of 10N/m2 .

Connectors:

In our system there are two type of connectors used. One is the Hose
connector and the other is the reducer. Hose connectors normally comprise
an adopt hose nipple and cap nut. These types of connectors are made up of
brass (or) aluminum (or) hardened pneumatic steel.

3.4 POWER SUPPLY

Power supply is a reference to a source of electrical power. A device

or system that supplies electrical or other types of energy to an output load or
group of loads is called a power supply unit. The term is most commonly
applied to electrical energy supplies, less often to mechanical ones, and
rarely to others.

This typically involves converting 240 volt AC supplied by a utility

company to a well-regulated lower voltage (+/-12V) DC for electronic
devices.

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 The ac voltage, typically 220V rms, is connected to a transformer,
which steps that ac voltage down to the level of the desired dc output. A
diode rectifier then provides a full-wave rectified voltage that is initially
filtered by a simple capacitor filter to produce a dc voltage. This resulting dc
voltage usually has some ripple or ac voltage variation.

A regulator circuit removes the ripples and also remains the same dc
value even if the input dc voltage varies, or the load connected to the output
dc voltage changes. This voltage regulation is usually obtained using one of
the popular voltage regulator IC units.

Working principle

Transformer

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 The potential transformer will step down the power supply voltage (0-
230V) to (0-6V) level. Then the secondary of the potential transformer will
be connected to the precision rectifier, which is constructed with the help of
op–amp. The advantages of using precision rectifier are it will give peak
voltage output as DC, rest of the circuits will give only RMS output.

Bridge rectifier

When four diodes are connected as shown in figure, the circuit is

called as bridge rectifier. The input to the circuit is applied to the diagonally
opposite corners of the network, and the output is taken from the remaining
two corners.

Let us assume that the transformer is working properly and there is a

positive potential, at point A and a negative potential at point B. the positive
potential at point A will forward bias D3 and reverse bias D4.

The negative potential at point B will forward bias D1 and reverse D2.
At this time D3 and D1 are forward biased and will allow current flow to
pass through them; D4 and D2 are reverse biased and will block current
flow.

The path for current flow is from point B through D1, up through RL,
through D3, through the secondary of the transformer back to point B. this
path is indicated by the solid arrows. Waveforms (1) and (2) can be observed
across D1 and D3.

One-half cycle later the polarity across the secondary of the

transformer reverse, forward biasing D2 and D4 and reverse biasing D1 and
D3. Current flow will now be from point A through D4, up through RL,
through D2, through the secondary of T1, and back to point A. This path is
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indicated by the broken arrows. Waveforms (3) and (4) can be observed
across D2 and D4. The current flow through RL is always in the same
direction. In flowing through RL this current develops a voltage
corresponding to that shown waveform (5). Since current flows through the
load (RL) during both half cycles of the applied voltage, this bridge rectifier
is a full-wave rectifier.

One advantage of a bridge rectifier over a conventional full-wave

rectifier is that with a given transformer the bridge rectifier produces a
voltage output that is nearly twice that of the conventional full-wave circuit.

This may be shown by assigning values to some of the components

shown in views A and B. assume that the same transformer is used in both
circuits. The peak voltage developed between points X and y is 1000 volts in
both circuits. In the conventional full-wave circuit shown—in view A, the
peak voltage from the center tap to either X or Y is 500 volts. Since only one
diode can conduct at any instant, the maximum voltage that can be rectified
at any instant is 500 volts.

The maximum voltage that appears across the load resistor is nearly-
but never exceeds-500 v0lts, as result of the small voltage drop across the
diode. In the bridge rectifier shown in view B, the maximum voltage that can
be rectified is the full secondary voltage, which is 1000 volts. Therefore, the
peak output voltage across the load resistor is nearly 1000 volts. With both
circuits using the same transformer, the bridge rectifier circuit produces a
higher output voltage than the conventional full-wave rectifier circuit.

IC voltage regulators

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 Voltage regulators comprise a class of widely used ICs. Regulator IC
units contain the circuitry for reference source, comparator amplifier, control
device, and overload protection all in a single IC. IC units provide regulation
of either a fixed positive voltage, a fixed negative voltage, or an adjustably
set voltage. The regulators can be selected for operation with load currents
from hundreds of milli amperes to tens of amperes, corresponding to power
ratings from milli watts to tens of watts.

A fixed three-terminal voltage regulator has an unregulated dc input

voltage, Vi, applied to one input terminal, a regulated dc output voltage, Vo,
from a second terminal, with the third terminal connected to ground.

The series 78 regulators provide fixed positive regulated voltages from

5 to 24 volts. Similarly, the series 79 regulators provide fixed negative
regulated voltages from 5 to 24 volts.

 For ICs, microcontroller, LCD --------- 5 volts

 For alarm circuit, op-amp, relay circuits ---------- 12 volts

3.5 MICRO CONTROLLER

A microconroller is a complete microprocessor system built on a
single IC. Microcontoller were developed to meet a need for
microprocessors to be put into low cost products. Building a complete
microprocessor system on a single chip substaintially reduce the cost of
building simple products, which use the microprocessors power to
implement their function,because tye microprocessor is a natural way to
implement many products. This means the idea of using a microprocessor for
low cost products comes up often. But the typical 8 bit microprocessor based
system, such as one using a Z80 and 8085 is expensive. Both 8085 and Z80

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system need some additional circuits to make a microprocessing system.
Each part there is cost of money. Even though a product design may requires
only very simple system, the parts needed to make the system as a low cost
product.

To solve this problem microprocessor system is implemented with a

single chip microcontroller. This could be called microcomputer,as all the
major parts are in the IC.Most frequently they are called microcomputer
because they are used to perform control functions.

The microcontroller contains full implementaion of a standard

MICROPROCESSOR , ROM, RAM, I/O ,CLOCK,TIMERS and also
SERIAL PORTS. Microcontroller also called “system” on a chip “or single
chip microprocessor system"”or computer on a chip.

A microcontroller is a Computer-On-A-Chip, or ,if you prefer a single

chip computer. Micro suggests that the device is small, and controller tells
you that the devics might be used to conrol objects processor or events.
Another term to describe a microconroller and its support circuits are often
built into, or embedded in the devices they control.

Today microcontroller are very commonly used in wide variety of

intelligent products. For example most personal computers keyboard and
implemented with a microconroller. It replaces scanning, debounce, matrix
decoding and serial transmission circuits. Many low cost products, such as
toys, electtic drills, microwave ovens, VCR and a host of other consumer
and industrial products are based on microcontrollers.

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 CHAPTER-4

DESIGN AND DRAWING

26
4.DESIGN OF EQUIPMENT AND DRAWING

27
BLOCK DIAGRAM

28
LINE DIAGRAM

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 CHAPTER -5

WORKING PRINCIPLE

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 5. WORKING PRINCIPLE

The dash pad switch was activated at the time of landing

condition. The control signal is given to the solenoid valve, when the button
is activated.

The same time, the motor is started which is coupled with rotary hydraulic
pump. The oil is suctioned from the oil tank and compressed oil goes to the
solenoid valve.

The solenoid valve is activated at the time of dash pad button

“ON”. The compressed fluid (oil) goes to the hydraulic cylinder. The
compressed oil pusses the hydraulic cylinder piston and move forward. The
wheel is fixed at the end of the single acting hydraulic cylinder. The piston
moves towards the ground and the wheel is landing ground smoothly.

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 The solenoid valve is deactivated at the time of dash pad button
“OFF”. The hydraulic cylinder fluid (oil) goes to the solenoid valve. Then
the oil returns back to the oil tank, by the time of deactivating the solenoid
valve. Thus the extra oil not required to maintain the oil level in the oil tank.

PRINCIPLE:

Some of the general properties of liquids in open containers have been

described. It remains to discuss how a liquid will behave when confined, for,
example, in an enclosed hydraulic system.

Liquids are practically incompressible. The following two basic principles

will help to explain the behavior of liquids when enclosed:

Liquids are practically incompressible in the pressure ranges

being considered. Stated simply, this means that a liquid cannot
be squeezed into a smaller space than it already occupies.
Therefore, an increase in pressure on any part of a confined
liquid is transmitted undiminished in all directions throughout
the liquid (Pascal's principle). For example, if pressure is
applied at one end of a long pipe, the liquid, being practically
incompressible, will transmit the pressure equally to every
portion of the pipe.

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 CHAPTER -6

MERITS AND DEMERITS

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 6. MERITS AND DEMERITS

MERITS

Fully Automated Project, so there is no requirement for

manual
They require little maintenance as there are no rotating
parts
They can easily installed as they are light and require no
foundation
They can work under ordinary atmospheric conditions.
Less time conception by filling the air
Fully automated project

DEMIRTS
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Coin is detected by the sensor, same coins to be entered (for
example Rs. 2 or Rs. 5)

CHAPTER-7

APPLICATIONS
35
 7.APPLICATIONS

APPLICATIONS

It is very useful for owners

All the petrol bunk and vulcanizing shop

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 CHAPTER-8

LIST OF MATERIALS

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 8. LIST OF MATERIALS

FACTORS DETERMINING THE CHOICE OF MATERIALS

The various factors which determine the choice of material are

discussed below.

1. PROPERTIES:

The material selected must posses the necessary properties for the

proposed application. The various requirements to be satisfied Can be

weight, surface finish, rigidity, ability to withstand environmental attack

from chemicals, service life, reliability etc.

The following four types of principle properties of materials

decisively affect their selection

a. Physical

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 b. Mechanical

c. From manufacturing point of view

d. Chemical

The various physical properties concerned are melting point, thermal

Conductivity, specific heat, coefficient of thermal expansion, specific

gravity, electrical conductivity, magnetic purposes etc.

The various Mechanical properties Concerned are strength in tensile,

Compressive shear, bending, torsional and buckling load, fatigue resistance,

impact resistance, eleastic limit, endurance limit, and modulus of elasticity,

hardness, wear resistance and sliding properties. The various properties

concerned from the manufacturing point of view are,

 Cast ability

 Weld ability

 Bribability

 Forge ability

 Merchantability

 Surface properties

 Shrinkage

 Deep drawing etc.

2. MANUFACTURING CASE:
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 Sometimes the demand for lowest possible manufacturing cost or surface

qualities obtainable by the application of suitable coating substances may

demand the use of special materials.

3. QUALITY REQUIRED:

This generally affects the manufacturing process and ultimately the

material. For example, it would never be desirable to go casting of a less

number of components which can be fabricated much more economically by

welding or hand forging the steel.

4. AVILABILITY OF MATERIAL:

Some materials may be scarce or in short supply.it then becomes

obligatory for the designer to use some other material which though may not

be a perfect substitute for the material designed.the delivery of materials and

the delivery date of product should also be kept in mind.

5. SPACE CONSIDERATION:

Sometimes high strength materials have to be selected because the

forces involved are high and space limitations are there.

6. COST:

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 As in any other problem, in selection of material the cost of material

plays an important part and should not be ignored.

Some times factors like scrap utilization, appearance, and non-

maintenance of the designed part are involved in the selection of proper

materials.

CHAPTER-9

COST ESTIMATION

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 9. COST ESTIMATION

1. LABOUR COST:

 Lathe

 Drilling

 Welding,

 Grinding,

 Power hacksaw,

 Gas cutting cost

2. OVERGHEAD CHARGES

The overhead charges are arrived by” manufacturing cost”

Manufacturing Cost = Material Cost + Labor Cost

= 3500 + 2000

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 = 5500

Overhead Charges = 20%of the manufacturing cost

= 1100

3. TOTAL COST

Total cost = Material Cost +Labor Cost +Overhead Charges

= 3500 + 2000 + 1100

Total cost for this project = 6600

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CHAPTER-10

CONCLUSION

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 10. CONCLUSION

This project will be very much useful to owners and vulcanizing

owners. This project is fully automated one. The air will be fill by the wheel
according to the money paid by the owners. The time consumed by filling
the air is very less when compared to manual air filling system.

The Safety are deposit the money to the aeroplane visual landing gear
system with tyre inflation system. The microcontroller unit senses the coin
and gives the output signal to the air filling system according to the money
pay by the owners. The solenoid valve is used to deliver the air from the tank
and deliver to the wheelers wheels.

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REFERENCE

46
 REFERENCE

1. Design data book -P.S.G.Tech.

2. Machine tool design handbook –Central machine tool Institute,

Bangalore.

3. Strength of Materials -R.S.Kurmi

4. Manufacturing Technology -M.Haslehurst.

5. Design of machine elements- R.s.Kurumi

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PHOTOGRAPHY

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