Fixed HARP: Commander CAD accommodation model
The Fixed Human Accommodation Reference Point (HARP): Commander CAD model is a parametric model intended to provide the composite boundaries representing the body of the defined user population, including the effects of posture and protective equipment and gear. The boundaries defined include the required space needed for the equipped users’ helmet, torso, elbows, knees, eye location, and boots. The model also generates preferred and acceptable ranges of keyboard locations. Clearances between the user and surrounding interior vehicle surfaces have been added per MIL-STD-1472 (e.g. head clearance required from head (helmet) to vehicle roof line). Direct vision zones, including to screens at eye level, have been added based on MIL-STD-1472 and SAE Recommended Practice J1050.
The Fixed Human Accommodation Reference Point (HARP): Commander CAD accommodation model is applicable to ground vehicle commander workstations where the users interact with a keyboard, screen, and have an adjustable seat back. The model can be applied as early as the concept phase of the vehicle thus ensuring ample opportunity to design the vehicle around the target design population. The model is also beneficial to vehicle upgrade efforts such as those involving the replacement of seats or the addition of new equipment in the workspace.