Usability is the ease of use and learnability of a human-made object.
r Vector Control
The ability to remain functional, without requiring excessive maintenance or repair, when faced with the challenges of normal operation over its design lifetime.
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.
The capability of a whole-system design to support operational use and readiness needs throughout the life-cycle at an affordable cost.
The ability to operate over extended ranges and conditions whilst resisting environmental effects during sustained operation.
The ability to carry heavy loads safely and efficiently, including adequate load carrying space, restraints and handling provision.
The ability to manoeuvre over soft terrain under load without excessive damage to the surface and without losing tractive effect.
A vehicle that is a means of transport, viable on land as well as on water.
The ability to make precise control movements that result in vehicle movement that precisely reflect the operators intention.
The ease with which a vehicle is able to move and change direction, in this case over difficult terrain.
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.
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.