Published:  August 25, 2020

In this issue’s feature article “Characterization of Composite Spaced Armor Performance,” we discuss how composite spaced armor is an unconventional armor system capable of stopping armor-piercing (AP) projectiles at lower areal density than possible with traditional metallic and ceramic armor systems, which makes it especially attractive for weight-sensitive applications. Prior testing of this armor system at normal obliquity has shown that it has great potential to reduce weight in aircraft systems while providing improved ballistics protection. The anisotropic nature of this composite spaced armor further differentiates it from traditional metallic and ceramic systems because its directionally-dependent mechanical properties cause performance to vary with obliquity. Ballistics testing evaluated normal and oblique angle impacts to quantify performance at a range of shot lines. Results indicate that for a limited range of oblique shot lines, the tumble of the bullet is reduced, resulting in degraded performance of the armor. However, this can be mitigated through system-level design and careful integration or eliminated with technology solutions.

In This Issue

Filter by Technical Focus Areas

By default, only content within your selected technical focus areas is displayed throughout the site. You can update your technical focus areas in your profile or temporarily filter the content here.


Filter by Article Types

Systems Engineering of Autonomy: Frameworks for MUM-T Architecture

SUMMARY Do we design autonomous systems or systems with autonomy? This question will be explored and developed by first understanding the perspective of autonomy, deconflicting the buzzwords from the reality, and applying a robust and…

Investigating Surface Structures for Infrared Signature Management

SUMMARY This article investigates the physics principles that govern the effects of type, smoothness, and surface structure of materials on a material’s emissivity. A simple classification of materials is metals and nonmetals. Nonmetals tend to…

Daunting Challenge of Drone Defense

INTRODUCTION The proliferation of an unmanned aircraft/aerial system (UAS) spreads beyond military and remote control (R/C) hobbyist markets in the last decade, spearheaded by the Chinese company DJI beginning with the release of the DJI…

Passive Coherent Location Radar – The Silent Threat

INTRODUCTION The future battlefield will be highly complex and congested. The electromagnetic (EM) environment will consist of a complicated mix of signals, both threats and friendlies. Figure 1 is a simplified illustration of some of…

Detection and Classification of Small UAS for Threat Neutralization

INTRODUCTION The recent emergence of small unmanned aerial systems (sUAS) into a broad sphere of commercialized applications has caused proliferation of easily, accessible platforms that can be operated and modified with relatively little training. Because…

Predicting Hydrodynamic Ram Damage in Bonded Composite Tanks Using Progressive Damage Failure

INTRODUCTION Hydrodynamic ram (HRAM) occurs when a fluid-filled enclosure is penetrated with a high-velocity projectile. A classic case, and common occurrence, is when an aircraft with fuel in the wings is impacted with a fast-moving…

Characterization of Composite Spaced Armor Performance

SUMMARY Composite spaced armor is an unconventional armor system capable of stopping armor-piercing (AP) projectiles at lower areal density than possible with traditional metallic and ceramic armor systems, which makes it especially attractive for weight-sensitive…