Airless tyres
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Transcript of Airless tyres
AIRLESS TIRE
Presented BYJayant N Sarode(14MCD0017)VIT UNIVERSITY VELLORE
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CONTENTS
What is a pneumatic tire and its drawbacks
What is an airless tire?
How it works?
Different design approaches
Advantages and disadvantages
Applications
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PNEUMATIC TIRES A pneumatic, or air-filled, tire is
made of an air tight inner core
filled with pressurized air.
The pressure of the air inside the
tire is greater than atmospheric
air pressure.
Cushioning Effect
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DRAWBACKS
Puncture or Blowout.
A blowout at high speeds can lead
to a dangerous car accident.
Variations in air
pressure changes tire performance.
Can blow out by gunfire or
explosion.
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Introduction
The Tweel Airless Tire was first developed in 2005
by Michelin.
The Tweel name is a combination of the words tyre
and wheel.
Tweel's hub connects to flexible polyurethane
spokes which are used to support an outer rim.
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WHAT IS AIRLESS TIRE?
Airless TIREs or
Non-pneumatic
TIREs (NPT) ,
are TIREs that
are not
supported by air
pressure.
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AIRLESS TIRE
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HOW IT WORKS?
The flexible tread and
shear bands deform
temporarily as the spokes
bend, then quickly go
back to the initial shape.
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DESIGN APPROACH
NASA’S Apollo
Lunar Rover
Michelin
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continued..
Bridgestone
Resilient
Technologies,
LLC
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ADVANTAGES
Eliminates air leaks or TIRE blow outs.
No maintenance required.
Facilitate recycling.
Remains mobile even with some of the spokes are damaged
or missing.
Durability & Long Life.
Can take gunfire or explosion.
Less environmental impact.
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DISADVANTAGES
Lack of adjustability.
Vibration.
Different Manufacturing technique.
Not as economic as pneumatic TIREs.
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APPLICATIONS
Used on some small vehicles
such as riding lawn
mowers and
motorized golf carts.
In backhoe or bulldozers.
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APPLICATIONS
For Military vehicles
All Terrine Vehicles (ATV)
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Futuristic Design
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Hankook i-Flex
Aims to keep losses to minimum
95% manufacturing is recyclable
CONCLUSION
No improvements are made in TIREs nowadays.
Manufacturers have started to focus making
airless TIREs.
Challenge is to make it more feasible and
economical.
When done, Airless TIREs are the future TIREs.
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