The work presented in this report is to help develop and complete the methodology that can quickly
predict the pressure distribution and estimate the comfortability of the aircraft seat. For this thesis, the
human back and spine are introduced and modelled as the focus is only on the backrest of the aircraft seat.
The bio modelling of the back and spine consists of the geometry including the spine curvature and back
shape at various conditions. The variables include the body type of the sitter, the sitting posture and the
backrest recline angle. Multiple cases of the body condition combining the these mentioned variables were
modelled, which generates a comparatively inclusive human model for the future work of pressure
distribution analysis. The initial building of the spine curve is based on an existing spine data, and the back
shape is captured by experiments using 3D scanning technology. Forces acting on the spine are also
obtained as a part of the modelling.
With this more complete the inclusive bio model of the body, the pattern of the contact and pressure
can then determine a more efficient configuration of cushion or aircraft seat innovation and design to
achieve a better comfort.