[TML] A Bit of Fluff

[Antony Farrell]

> Hmm ... land yachts with grav lifts ... nice idea ... but it 
> occurs to me that roll stability could be an issue - a decent 
> push from the wind on an overhead sail and the craft could 
> potentially roll over so far as to lose power from the sail.
> 
> Possible solutions:
> 
> Have the CG centre of lift point well above the vehicle's 
> centre of balance, so that it self rights.
> 
> Have a keel below the vessel to counterbalance. The keel 
> would probably need to be an aerofoil shape with some control 
> over its angle of attack.
> 
> I'm not sure these possibilities provide a complete solution 
> to the problem.
> 
> -- 
> Regards,
> Michael Jenkins

Sounds a lot like the swing keels that some of the maxi yachts in the Sydney
Hobart were fitted with.

Antony

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