A head unit system for controlling motion of an object includes a secondary object sensor and a head unit that includes shear thickening fluid (STF) and a chamber configured to contain the STF. The chamber further includes a front channel and a back channel. The head unit further includes a piston housed at least partially radially within the piston compartment and separating the back channel and the front channel. The piston includes a first piston bypass and a second piston bypass to control flow of the STF between opposite sides of the piston. The chamber further includes a set of fluid flow sensors and a set of fluid manipulation emitters to control the flow of the STF to cause selection of one of a variety of shear rates for the STF within the chamber to control motion of the object with regards to a secondary object.

A head unit system for controlling motion of an object includes an environment sensor and a head unit that include shear thickening fluid (STF) and a chamber to contain the STF. The chamber further includes front and back channels. The head unit further includes a piston housed radially within the piston compartment and separating the back channel and the front channel. The piston includes a first piston bypass and a second piston bypass to control flow of the STF between opposite sides of the piston. The chamber further includes a set of fluid flow sensors and a set of fluid manipulation emitters to control the flow of the STF to cause selection of one of a variety of shear rates for the STF within the chamber to abate an internal factor of concern associated with an internal environment as sensed by the environment sensor.

A head unit system for controlling motion of an object includes a shear thickening fluid (STF) and a chamber configured to contain a portion of the STF. The chamber further includes a front channel and a back channel. The head unit system further includes a piston housed at least partially radially within the piston compartment and separating the back channel and the front channel. The piston includes a piston bypass to control flow of the STF between opposite sides of the piston. The chamber further includes a set of fluid manipulation emitters to control the flow of the STF to cause selection of one of a variety of shear rates for the STF within the chamber.

A head unit system for controlling an object includes a head unit device that include shear thickening fluid (STF) and a chamber configured to contain the STF. The chamber further includes a gate between a front channel and a back channel. The gate includes a set of bypass openings. The head unit device further includes a piston housed at least partially radially within the chamber. The gate is configured to control flow of the STF between the front channel and the back channel to control contraction of the chamber to provide the controlling of the object.