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Articles
RF & Microwave Electronics

How to Specify and Select RF Filters

Selecting a filter for an A&D application requires an understanding of available RF filter responses, physical formats, and technologies, with a good idea of necessary functional goals, such as separating channels or rejecting interference.

Articles
Defense

The Sky is No Longer the Limit Celebrating 75 Years of Air Force Technology

Since its inception, the mission of the United States Air Force has been to fly, fight, and win — delivering airpower anytime, anywhere in defense of our nation.

Application Briefs
Imaging

Nano-UAV Systems

Extremely light and well-suited for operations in contested environments, nearly silent, and with a flight time up to 25 minutes, the combat-proven, pocket-sized Black Hornet PRS transmits live video and HD still images back to the operator.

Application Briefs
Weapons Systems

Tactical Combat Missiles

With AKERON, MBDA is now offering a family of missiles that can adapt to the needs of collaborative tactical combat.

Briefs
Aerospace

Investigation of Requirements and Capabilities of Next-Generation Mine Warfare Unmanned Underwater Vehicles

The current fleet of United States Navy Mine Countermeasures ships, the Avenger class, is reaching the end of its planned service life.

Briefs
Photonics/Optics

On the Pulsed Laser Ablation of Metals and Semiconductors

The fundamental goal of this research is to build from a broad set of experimental and theoretical data to a narrower set of scaling relations, heuristics, and trends that provide a roadmap for understanding laser ablation across relevant regimes.

Briefs
Aerospace

Modeling Optical Time and Frequency Generation and Transfer Systems

The research was closely tied to work that was led by Nathan Newbury at NIST, and the principal goal was to support the development of advanced laser sources.

Briefs
Weapons Systems

Navy Lasers, Railgun, and Hypervelocity Projectile: Background and Issues for Congress

Two key limitations that Navy surface ships currently have in defending themselves against ASCMs and ASBMs are limited depth of magazine and unfavorable cost exchange ratios.

Briefs
Design

Design, Demonstration, and Simulation of the Diode-Pumped Thulium/Holmium (Tm/Ho) Composite Fiber 2.1-μm Laser

This research demonstrates for the first time a polariton laser with coherence reaching the intrinsic limit of single-mode matter-wave lasers.

Application Briefs
Defense

Underwater Security System

KnightShield covers medium ranges in ports and detects hostile divers – whether using closed or open breathing apparatus – as well as AUVs, SDVs, DPVs, and UUVs.

Application Briefs
Defense

Unmanned Hover Plane

The Trojan Unmanned Hover Plane (UHP) is a one-of-a-kind system that bridges the gap between the need to hover and the need to reach long ranges, giving it the ability to perform aerial missions with pinpoint precision.

Application Briefs
Mechanical & Fluid Systems

Cryogenic Thermal Subsystem

The Cryogenic Thermal Subsystem’s most critical function is to provide cooling to maintain the detectors in two of the Roman Coronagraph Instrument’s cameras at sufficiently low temperatures of approximately minus 161o F, which will allow them to function with the required sensitivity.

Products
Software

New Products: August 2022 Aerospace & Defense Technology

New Products for August 2022

Articles
Materials

The Science of Joining Dissimilar Metals in Aerospace Manufacturing

With the industry’s traditional focus on welding and brazing, there has been minimal formal education on diffusion bonding.

Articles
Aerospace

Designing A/D Converters for the James Webb Space Telescope

The James Webb Space Telescope (JWST) has four infrared cameras to view the stars.

Articles
Energy

Vibration Testing NASA’s X-57 Maxwell Electric Aircraft

In place of the usual gasoline-powered motors, the X-57 has two all-electric motors powered by traction batteries.

Articles
Design

Hybrid Circulators for mmWave Systems

Circulators are primarily used in transmit-receive systems such as point-to-point radio and radar.

Articles
Electronics & Computers

Transforming Battlespace Communications

The Russian invasion in Ukraine has certainly raised the security stakes and intensified the need for simultaneous communications streams over a single platform.

Articles
Aerospace

The Digital Cockpit of the Future

Software and automation have enabled a step forward in cockpit design, one that is stripped down to the essentials without sacrificing functionality.

Application Briefs
Sensors/Data Acquisition

Vehicle-Mounted Tactical Radars

Blighter will be supplying its B422 180-degree ground surveillance e-scanning radar in a vehicle-mounted configuration to be fitted to a six-wheeled UGV.

Application Briefs
Defense

Multi-Mission UAS (MMU) Systems

XTEND will supply hundreds of its advanced Wolverine drone systems to the U.S Department of Defense.

Application Briefs
Weapons Systems

Loitering Munition

SPIKE FIRELFY is part of the SPIKE Family of precision guided electrooptical missile systems.

Briefs
Test & Measurement

Pulsed Exposure Toxicity Testing: Method Development and Initial Evaluation for Stormwater Compliance

Preliminary research into modifying whole effluent toxicity testing protocols designed for continuous flow discharges as applied to episodic and/or ephemeral discharges such as those associated with storm water runoff.

Briefs
Data Acquisition

Upgrade Transonic Compressor Test Rig Data Acquisition System

New software programming using commercial off-the-shelf software for acquiring data, processing data, displaying results, and generating reports is implemented to improve the performance of a legacy system.

Briefs
Aerospace

Electrokinetics Models for Micro- and Nano-Fluidic Impedance Sensors

Microfluidics- and nanofluidics-based impedance sensors play an important role in the identification of toxic industrial chemicals and pathogens in the biodetection and biodefense arena, but their efficient modeling and design continues to be a challenge.

Briefs
Propulsion

Evaluation and Test Requirements for Liquid Rocket Engines

This Standard establishes test and evaluation requirements related to the development, qualification (or certification), and acceptance (flight production unit) of liquid propellant rocket engines and associated propulsion systems.

Briefs
Test & Measurement

GPS Radio Occultation and Ultraviolet Photometry-Colocated (GROUP-C) Early Orbit Testing Results

After routine flight, capture, and installation, GROUP-C underwent Early Orbit Testing to verify its performance prior to science operations.

Application Briefs
Aerospace

Full-Scale Micro-launcher Rocket

Micro-launchers such as Orbex Prime give satellite manufacturers a dedicated launch service, in contrast to larger, ‘rideshare’ launchers, where small satellites are often a secondary payload, and frequently face significant delays.

Products
Communications

New Products: June 2022 Aerospace & Defense Technology

Modeling and Simulation Software

COMSOL (Burlington, MA) announced a major update to the COMSOL Multiphysics ® software version 6.0. The update builds out the Model...