Abstract: The following invention relates to smart material couplings, particularly to shape memory alloy suspension systems to mitigate against shock or blast. There is provided A land vehicle comprising: —an armoured v shaped hull; at least one wheel set with a hub, and at least one suspension device comprising a shape memory material operably connecting the hull to the wheel set.

Abstract: The following invention relates to smart material couplings, particularly to shape memory alloy drivetrain systems to mitigate against shock or blast. There is provided an armoured land vehicle comprising:—an armoured v shaped hull; a powerplant located within said chassis, at least one wheel set with a hub, and, at least one drive shaft comprising a shape memory alloy, wherein said drivetrain is located between and operably connected via drive couplings to said powerplant and the hub of the at least one wheel set, to provide drive to said at least one wheel set.

Abstract: The following invention relates to split hulls, particularly to V shaped split hulls with a biased resilient member to mitigate against shock or blast. There is provided an armoured land vehicle comprising; a lower armoured v shaped hull; an upper hull which is located above and slidably engaged in a vertical plane with said hull, wherein there is at least one biased resilient member located between said upper hull and lower hull, to reduce the travel between said upper and lower hulls in the event of a shock event.