Friday 19th October, 2001

Windjet completes thorough static load test programme

Because of the massive loads the Windjet craft must endure during a high speed run, thorough testing of the craft must be completed prior to every record run. This is to ensure that the craft can withstand high load without failure which, at speeds in excess of 100 mph, could prove fatal for the pilot.

Static load, equal to one and a half times the maximum load the craft would experience at high speed, is applied to the craft via weights and winches. The weights simulate the vertical forces produced by the stub wings and the winch load, applied to the sail horizontally, adds additional load.

This combination in akin to 'flying a wheel' (where the side forces produced by the sail begin to tip the craft over) and hence this is a good proof that the craft can withstand such loads. This kind of testing puts enormous strain on the tyres, wheels and running gear, as can be seen by the deformation of the tyre in the image on the right.

Needless to say, Windjet passed these tests admirably and further proved her readiness to challenge the records.



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