| 摘要 |
<p>A roundabout for performing acrobatic figures such as barrel roll comprises a main arm (4) rotatable around a central axis (A)and having a longitudinal axis (C), a second arm (8) rotatable about an axis of rotation (B) perpendicular to the longitudinal axis (C) of the main arm, a vehicle fixed on the second arm (8) at a distance from the axis of rotation (B) of the second arm and having a longitudinal axis (z) directed radially towards the axis of rotation (B); the vehicle being fixed to the second arm (8) so as that its position with respect to the second arm (8) does not change during the operation of the roundabout.</p> |
