[kach22i]

Air casters: 7 reasons to take a fresh look at an existing technology
https://www.plantengineering.com/single-article/air-casters-7-reasons-to-take-a-fresh-look-at-an-existing-technology/3e3a47f8359ca6d4110b89d6094208a1.html

Although air caster technology was originally developed in the mid-1950s, recent changes in the industrial landscape are making them a modern means to consider for moving machinery, equipment, product and cargo...........

Like a hovercraft, the load floats on this nearly frictionless layer and can be moved in any direction. Depending on the size of the air caster, it can lift the load up to 3.5 inches. The size and weight of the load will determine the number and size of air casters needed.

SRN4 systems tour
SRN4 systems tour:: jameshovercraft.co.uk

Underneath the craft, whilst on jacks. Again a rare experience, this shows one of the seven hydraulic jack rams raised. .......

The rubber pad onto which the jack ram (rusty) is placed. This is one of the seven landing pads underneath the SRN4 - on landing it didnt sit on the skirt or even have a metal-to-ground contact. Instead it was placed down on these giant rubber biscuits, engineered to be the strongest points of the craft's structure.