Navy Technology Transfer Navy Technology Transfer


Adaptive and Configurable Heat Flow Calorimeter

Naval Surface Warfare Center, Crane Division

Calorimeters are used to measure the heat of chemical reaction or physical changes as well as heat capacity. Batteries can be tested in calorimeters to determine the energy density and other characteristics. However, it is difficult to measure these high energy dense systems or to measure the characteristics of complex battery cell configurations such as multiple cells or oddly sized or shaped arrangements. Naval Surface Warfare Center, Crane Division has developed an adaptive heat flow calorimeter that proves flexible and repairable testing capabilities for heat generating or absorbing systems such as energy storage systems. The calorimeter includes a temperature bath adapted to maintain a fluid bath at a predetermined temperature, a containment structure for inserting into the temperature bath, heat sinks, thermal sensor assemblies, an internal containment structure, and thermal barriers between different elements of the invention to isolate different sections from each other. The thermal sensor assemblies and heat sinks are removable so it is possible to measure the heat flow into or out of the containment structure’s different section without being altered by direct thermal contact with other inner sections. Other aspects of this calorimeters design that are an improvement over previous designs include: samples can be rapidly inserted and removed, ability to obtain separate thermal measurements for different section of the sample under test, and capability to insert or substitute components with different sized element to accommodate different types or sizes of samples.

Internal Locking Device

Naval Facilities Engineering and Expeditionary Warfare Center

The internal locking device (ILD) was developed to address security and operational deficiencies in high security padlocks and hasps. The Office of the Assistant Secretary of Defense approved the ILD as “an alternative to the current high security padlock and hasp requirement” on 6 March 2001 for protection of conventional arms, ammunition, and explosives. It has subsequently been approved for use on structures protecting chemical and nuclear weapons. The ILD can be installed on hinged or sliding doors and provides numerous critical security and operational advantages over high security padlock and hasp systems.

Pipeline Intrusion Detection

Naval Research Laboratory

Naval Research Laboratory (NRL) researchers have developed an intrusion detection system
for undersea pipelines that detect intruding objects as well as leakage effects from the
pipelines. Existing detection systems attempt to fully maintain the security and physical
integrity of pipelines. However, intrusions by undersea vehicles, underwater robots, divers,
diver delivery vehicles, directed or intense sound waves, or leaking fluid warrants the
need for a reliable, continual monitoring system that is able to detect objects or disturbances
in proximity to the pipeline. The innovative NRL intrusion detection system utilizes
low-frequency structure-guided acoustic waves for detecting the intrusion since the waves
propagate great distances without suffering geometrical signal attenuation. As a result,
these waves can excite resonant characteristics in intruding objects that are a few wavelengths
long or contain very compressible substances such as air.