This paper presents the high-safety, UNITAS 2000 road tanker. This truck type is characterized by a cylindrical tank with a lowest possible centre of gravity. The biggest difficulty in realizing this project was to lower the centre of gravity in order to achieve: (1) a high level of stability against overturning; and (2) an excellent road vehicle performance. The necessary static calculations for type approval were carried out using a finite element program. The usual hoop has been replaced on the UNITAS 2000 by an arrangement that provides the same safety level with a normal wall thickness of 5,12 mm. The dome fittings were lowered into the outer contour of the tank, achieving a vehicle height saving of 400 mm. As a result, the dome fittings are protected in the case of the vehicle overturning in an accident, and a protection cover for the dome fittings is no longer necessary. The trapezoidal profile also had the advantage of reducing the normal vehicle length producing better manoeuverability. The UNITAS 2000 truck has been tested for operational safety by the Vehicle Owner's Trade Association. The truck is permitted to display the GS sign (symbol for tested safety).
Abstract