This report seeks to redress this and provide an overview reference document for armour designers and armoured vehicle capability acquisition and quality assurance engineers.

This report provides an overview of battery technologies and related issues relevant to their use in military land vehicles.

This note works through an example of switching between many coordinate systems using a modern matrix language that lends itself to describing arenas with multiple entities such as found in many Defence scenarios.

This report provides such a horizon scan for Combat Service Support (CSS). Global trends and the results of science and technology literature scans across seven domains (power and energy, transportation, robotic and autonomous systems, materials and manufacturing, sensors, information and communication technology, and health technologies) are presented.

This report contains reviews of software tools, developed by allied countries, that support analysis of Army readiness and sustainability.

The DST Group Annual Review 2015-16 showcases select examples of science and technology delivering capability outcomes for Defence and national security.

A novel wavelet-based sparse signal representation technique is used to separate the main and tail rotor blade components of a helicopter from the composite radar returns. The received signal consists of returns from the rotating main and tail rotor blades, the helicopter body, possible land or sea clutter, and other residual components, which may all overlap in time and frequency; and therefore conventional time and frequency separation techniques cannot be applied. A sparse signal representation technique is now proposed for this problem with the tunable Q wavelet transform used as the dictionary. The proposed algorithm is demonstrated using both simulated and real radar data (X and Ku-band), and is capable of extracting the components of interest successfully.

Using a custom-written FORTRAN computer program, interfaced with an existing two-dimensional boundary element fracture analysis code, the present report provides an extensive set of Beta factor solutions covering a wide range of hole offsets and crack lengths. This work has also led to the derivation of an improved closed-form analytical two-dimensional Beta factor solution for the related case of symmetrical cracks emanating from a central hole in a finite-width strip.

The as-built out-of-circularity (OOC) deviations from a perfectly round shape and plate thickness variations of a cylinder that is subjected to external pressure are known to have a significant effect on the collapse strength and must be accurately represented in finite element analysis to obtain accurate results. Often it is necessary to interpolate measurements from a relatively coarse grid to a refined finite element model and methods that have wide general acceptance are Fourier series and bi-linear interpolation. These methods have been implemented in an Excel spreadsheet to produce node and element data that can be used directly in the Strand7 finite element package, but the methods employed are suitable for other software as well.

This report describes the design of the ORBAT Data Service and how it is used to manage and share ORBAT data between tools such as ViPA.