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Airless tyre
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Transcript of Airless tyre
AIRLESS TYRE/ NON-PNEUMATIC TYRE
Guided byDr. R G PatilMr. Balakrishna
Presented byPermi Jagadish1AT10ME031
ATRIA INSTITUTE OF TECHNOLOGY BANGALORE
DEPARTMENT OF MECHANICAL ENGINEERING
TECHNICAL SEMINAR ON
Topics What is a pneumatic tyre and its drawbacks.
What is an airless tyre?
How it works?
Different design approaches.
Advantages and disadvantages.
Applications.
Pneumatic tyres A pneumatic, or air-filled, tyre is made
of an air tight inner core filled with
pressurized air.
The pressure of the air inside the tyre is
greater than atmospheric air pressure, so
the tyre remains inflated even with the
weight of a vehicle resting on it.
It gives a certain degree a cushioning
effect as the tyre hits bumps in the road.
Drawbacks Puncture or Blowout.
A blowout at high speeds can lead
to a dangerous car accident.
Variations in air
pressure changes tyre
performance.
Can blow out by gunfire or
explosion.
What is airless tyre?
Airless tyres or
Non-pneumatic
tyres (NPT) ,
are tyres that are
not supported
by air pressure.
continued..
How it works?
The flexible tread and
shear bands deform
temporarily as the spokes
bend, then quickly go
back to the initial shape.
Design approach
NASA’S Apollo Lunar Rover
Michelin
continued..
Bridgestone
Resilient Technologies, LLC
Advantages Eliminates air leaks or tyre 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.
Disadvantages Lack of adjustability.
Vibration.
Different Manufacturing technique.
Not as economic as pneumatic tyres.
Applications
Used on some small
vehicles such as riding
lawn mowers and
motorized golf carts.
In backhoe or bulldozers.
continued..
For Military vehicles
Also used inAll Terrine Vehicles (ATV)
Conclusion
For years, vehicles have been running on
pneumatic tyres and there was almost a full stop for any
further improvement of tyres. In 20th century the engineers
have come up with a new concept where the tyres never
require air, if the drawbacks that are being encountered
presently are and improved then there is good future for
these tyres. And the vehicles can run without the necessity
of air.