Tight critical configuration

G. S. HOOVLER, M. N. BALDWIN. E. L. MACEDA, and F. G. WELFARE, Critical Experiments Supporting Underwater Storage of Tightly Packed Configurations of Spent Fuel Pins, BAW-1645-4, Babcock Wilcox Co. (Nov. 1981). 

Fig. 1. Depictions of potential energy surfaces with "tight" and "loose" critical configurations.

As noted in Section 12.5.1, a family of polyaxial copolyesters described in Chapter 2 can be used to prepare two or more of the critical components of a femoral sealing device. Other compliant members of this family of polymers, which can be converted to compliant, stretchable membranes and strong, stretchable monofilament fibers, can be used to construct a mantle or cover for metallic endovascular stents. Thus, a composite of thin film, reinforced with a monofilament in cross-coiled configuration, can be assembled into a highly compliant, expandable, tubular mantle or sleeve. This can be placed tightly as a cover outside an expandable metallic or polymeric stent so that under concentric irreversible expansion at the desired site of... 

These applications often require more power and therefore more current than similar consumer electronic devices. Professional two-way portable mobile radios may have radio sections with several watts of RF output power which requires substantial currents from the battery pack. An easily configurable device with a tight tolerance on overdischarge current controls is critical so that normal operation does not appear as abusive discharge and thus activate the protection (monitoring controlling) functions. 

---