HUMAN ENGINEERING: The 3D laser scanning Instead of designing helmets around the outer shell, the AGV STANDARDS start with the rider's head, which is measured digitally using laser scanning technology.
Three-dimensional scanning is a highly-precise technology (to a tenth of a millimetre) that allows one to convert anthropomorphic shapes into digital data and then carry out accurate research on the human physiognomy. This research then becomes the starting point for designing the parts of the helmet which are in contact with the face.
Accurate 3D research into the shape of the face has enabled us to design helmet inner shells and linings in ways never achieved before to obtain a comfort lining that is optimised for different roles, with different foam densities to maintain the aerodynamic position of the helmet, breathable fabrics and anatomical geometries.
Combining ergonomic research with measurements of rider posture has allowed us to design the helmet components and visor opening to achieve the fullest field of view toward the horizon.
Having a mathematical model of the helmet in all its parts allows us to perform Finite Elements Method (FEM) analyses which provide computer simulations of a series of crash tests reproducing not only the official approved standards, but the more demanding AGV standards as well. The FEM analysis and its results show whether the helmet structure needs to be modified to achieve the performance required by the AGV EXTREME Standards. This procedure allows a helmet to undergo a much greater variety of tests many more times than is possible with "real-world" tests because it doesn't involve the destruction of the shell tested.
The protection capacity criteria specified by the new standards are:
G-FORCE: residual force of impact transmitted to the head.
HIC = Head Injury Criterion: degree of risk of brain injury due to impact acceleration.
During this important phase, agv worked and has been working in conjunction with MIPS AB STOCCOLMA e PADUA UNIVERSITY, (Mechanical Engineering, Materials Characterisation).
WIND TUNNEL TESTING
Comfort is safety. A well-ventilated, quiet and balanced helmet is much less tiring for a rider to wear, allowing them to focus more effectively on riding.
During wind tunnel testing, comfort is measured using the following criteria:
Full carbon helmet specially designed for professional use.
Sets new performance standards with its wide field of vision, low weight and compact dimensions, extensive ventilation, exclusive ergonomic design and class-leading aerodynamics.
A helmet that combines the performance of the Pista GP with road features such as adjustable air vents, variable aerodynamics with a removable spoiler, and increased comfort - yet achieves this without sacrificing the performance standards of the GP model.
A helmet that takes the concepts developed for the Pista model and adapts them to GT and Sport Touring use.
The GT Veloce has been designed to provide compact dimensions, comfort and low noise levels, a highly efficient ventilation system, wide field of vision and a dedicated intercom system - all while being extremely practical to use.
Residual impact force transmitted to the head, 36%** below the limit set by the standard. The result is achieved thanks to the numerous FEM simulations and in-house tests carried out.
HIC index 48%** below the limit set by the standard. The HIC (Head Injury Criterion) index measures the level of brain trauma risk due to the accelerations of impact. In this case too, the result is achieved thanks to the numerous FEM simulations and in-house tests carried out.
71%* more compact visor movement. This allows use of the space saved to increase the thickness of the absorption material, benefitting safety.
9%* bigger visor window. This gives the rider better visibility of the track in front and
laterally when bent over the bike riding straight ahead, benefitting active safety.
The innovative two-stage pivot closure mechanism pulls the visor in against the helmet to ensure a perfect seal. This innovative solution reduces drafts and wind noise at high speed.
3%* smaller frontal section and 6%* smaller lateral section: the helmet is more compact and lighter, without reducing passive safety and comfort.
Resistance to aerodynamic penetration (X-DRAG) reduced by 7%*. The lower the X-DRAG value, the lower the
amount of stress transmitted to the rider’s neck, with an increase in comfort and reduction
of fatigue. Attentive design, computational fluid dynamic tests and wind tunnel testing have
obtained an average 7%* reduction of the X-DRAG while racing.
193%* increase in vent surface. The position and size of the vents and computational fluid dynamic wind tunnel testing have generated a ventilation system capable of effectively removing heat and humidity.
All figures marked with an asterisk* refer to the AGV GP-TECH helmet while two asterisks** refer to the EC standards.