NON-PNEUMATIC TYRES (NPT)
Keywords:
Hub, polyurethane spokes, shear band, tread band, honeycomb spokesAbstract
The Non Pneumatic Tyre (NPT) design was first developed by the French tyre company Michelin. Its
significant advantage over pneumatic tyres is that it does not use a bladder full of compressed air and therefore it cannot
burst or become flat. The inner hub of the NPT connects to flexible polyurethane spokes which are used to support an
outer rim and assume the shock absorbing role of a traditional tyre’s pneumatic properties. Potential benefits of the Non
Pneumatic Tyre include the obvious safety and convenience of never having flat tyres. Commercial applications will be
in lower weight vehicles such as wheelchairs, scooters, heavy vehicles like earth movers, military applications and NASA
applied it in lunar rover. In future NPT will replace traditional tyres which could avoid checking of tyre pressure,
highway blowouts and balancing between traction and comfort.