This paper presents a new design for the core of a lightweight tail section of an unmanned aerial vehicle (UAV) with camber-morphing horizontal and vertical stabilizers. The core of each stabilizer is composed of an aluminum spar, two active end ribs, and multiple inactive ribs. Each active end rib is composed of a solid leading compartment connected to a flexible corrugated trailing segment. Thermally activated shape memory alloy (SMA) wire actuators along the length of the corrugated segment are used to control the camber of each active rib. The SMA wires are extended through the hollow spar to increase the amount of actuation and are guided using polycarbonate pulleys. A parametric CAD model was created to automatically regenerate the corrugated trailing segment geometry based on trough height, width and angle, as well as the used NACA airfoil. The locations of the vertical webs are adjusted with each parameter set so that the webs are always at the trough centers for consistency. COMSOL's LiveLink was used to pass the generated CAD geometry to COMSOL, where finite element structural analysis is performed to study the effect of the geometric parameters on the camber deformation under SMA wire actuation and applied loads. The deformed shape of the trailing segment is then approximated as a third-degree polynomial and used to modify the four-digit NACA airfoil equation, generating a deformed shape for the airfoil. 2D computational fluid dynamics simulations are then performed to compute the lift-to-drag ratio for each structural configuration, from which the geometric parameters that maximize the performance of the stabilizer at the design speed can be selected. The proposed UAV SMA-based camber-morphing rear control section has been successfully manufactured and tested. Camber morphing up to 10.7°was successfully achieved and showed very good agreement with the numerical prediction.

Here, the mannose‐rich yeast binding activity of immobilized Con A was tested when the beads were stored for up to 60 days in a freezer (‐20 C), a refrigerator (4C), and at room temperature (24C), compared with controls stored in a refrigerator under the manufacturer's specifications. In about a total of 9,000 replicate experiments, beads stored at the 3 temperatures studied, maintained their ability to effectively bind yeast (Saccharomyces cerevisiae) over the 60 day period. Linear trend lines for the 3 storage temperature graphs confirmed that the room temperature condition was slightly better than the refrigerator condition, that was slightly better than the freezer condition. The difference between the trend lines was at their widest divergence about 12%. While the beads bound yeast effectively after being stored at the temperatures tested, the experiments were conducted at 24C. It is likely that if the actual experiments were done at different temperatures, the kinetics of yeast binding to the beads would be affected by temperature. This issue was not examined in this study but should be investigated, as many experiments in a wide variety of systems might require being conducted at different temperatures. This is a model system for studying the efficacy of potential glycan‐based anti‐infection drugs (Supported by NIH NIGMS SCORE (S0648680), MARC, RISE, the Joseph Drown Foundation and the Sidney Stern Memorial Trust).