Large apertures in space have applications for telecommunications, Earth observation and
scientific missions. This paper reviews advances in mechanical architectures and …

The surface precision of an antenna reflector can be improved using the actuation of
piezoelectric materials to obtain a high-performance space antenna. In this study, the active …

A prototype for a space-borne smart reconfigurable reflector, whose reflector surface can be
changed intentionally using surface adjustment actuators, has been developed, and its …

Smart space antennas with mechanically reconfigurable reflectors (MRRs) not only
compensate for shape errors induced by distortions in the reflector but, depending on the …

Compared with conventional piezoelectric inchworm actuators (PIAs), which rely on a
frictional mechanism to produce large stroke and force outputs, PIAs equipped with MEMS …

By embedding actuators within a compliant structure (compliant mechanism), it is possible to
develop adaptive system, that is, a shape morphing structure that is capable of producing …

In this paper, a design optimization approach is developed to design the placement and
stroke of actuators at a conceptual design phase. This method is applied to the actuator …

I. Introduction onventional space reflectors have fixed radiation patterns. In contrast, a space-
reconfigurable reflector can adapt its radiation pattern, thus, giving several benefits: use of …

A study into the shape and active vibration control of antenna reflectors, an important
member of the space structures, is carried out in this paper. Geometric nonlinear analysis is …

Large and highly accurate antenna systems in space are required for radio astronomical
satellites that observe celestial objects in the frequency over 100 GHz. For large antenna …