Usability
Usability is the ease of use and learnability of a human-made object.
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Durability
The ability to remain functional, without requiring excessive maintenance or repair, when faced with the challenges of normal operation over its design lifetime.
Maintainability
The ease with which a product can be maintained in order to; correct defects or their cause, repair or replace faulty or worn-out components without having to replace still working parts, prevent unexpected working condition, maximize a product’s useful life, maximize efficiency, reliability, and safety, meet new requirements, make future maintenance easier, or cope with a changed environment.
Reconfigurability
Designed at the outset for rapid change in structure, hardware and software components, in order to quickly adjust capability and function within a fleet in response to sudden environmental changes or varying demands.
Supportability
The capability of a whole-system design to support operational use and readiness needs throughout the life-cycle at an affordable cost.
Remote Control
Remote teleoperation without the need for on-board human presence.
Range and Endurance
The ability to operate over extended ranges and conditions whilst resisting environmental effects during sustained operation.
Load Carrying
The ability to carry heavy loads safely and efficiently, including adequate load carrying space, restraints and handling provision.
Soft Ground Transit
The ability to manoeuvre over soft terrain under load without excessive damage to the surface and without losing tractive effect.
Amphibious
A vehicle that is a means of transport, viable on land as well as on water.
Obstacle Crossing
The ability to overcome natural, man-made and concealed obstacles to movement.
Speed
The ability to move quickly over terrain.
Precision Control
The ability to make precise control movements that result in vehicle movement that precisely reflect the operators intention.
Manoeuvrability
The ease with which a vehicle is able to move and change direction, in this case over difficult terrain.
Stability
In the context of an extreme terrain vehicle, having a low and central Centre of Gravity in a wide footprint so as to resist tipping on ground and to remain stable when afloat.
Step Climbing
The ability to overcome rapid changes in gradient or ground level without losing traction, bottoming out, fouling extremes of the vehicle or turning over.
Slope Traversal
The ability to move across a slop safely without slipping or overturning, whilst retaining the ability to manoeuvre and deal with or avoid obstacles or changing ground conditions.
Slope Climbing
The ability to ascend or descend steep slopes safely, without losing traction, retaining the ability to manoeuvre to avoid obstacles or changing ground conditions, including the ability to back off safely and under control if necessary.
Agility
The ability to deal rapidly and effectively with any form of terrain challenge, and to adapt quickly to changing operational demands. A complex emergent capability.
