This paper delves into the investigation of morphing capabilities in a unimorph deformable mirror within the context of Active Optics applications, specifically when exposed to environmental factors in space. The study encompasses an array of factors that contribute to disturbances, encompassing intricate thermal and mechanical conditions that impact the ferroelectric properties of strain actuation. The study also focuses on the effects of stress-induced geometric stiffness on the mirror's structural rigidity. In addition, the paper envisions the potential utilization of these mirrors in lightweight satellite systems.
This paper proposes an ultra-lightweight design of space reflectors made of polymer thin layers, to increase the aperture size of space observation platform with higher imaging resolution. The morphing capabilities are evaluated with both petal-like segmented and monolithic configured reflectors as the primary mirror of space telescopes, by forming a set of Zernike modes. Finally, a compound control strategy using a deformable relay mirror to compensate the residual surface error corrected partially by the active unimorph primary mirror.
This paper discusses a new concept of the active spherical shell reflector made of polymer materials, which exhibits excellent areal density and stowability and paves the way to future lightweight large-aperture space telescopes for potential observation of various wavelengths. The shape control of a small-scale technology demonstrator is performed, and the design criteria of patterned electrodes is proposed. The stress-stiffening effect on the piezoelectric strain actuation is investigated and the influence of manufacturing errors on the structural dynamics is also considered to give a preliminary study on evaluating the morphing capability under complex environment in space.