Microturbine Propulsion for UAVs

Seventy years ago, military aviation moved from reciprocating engines to vastly more reliable turbo jets and turboprops. Shortly after, the commercial air transport industry followed suit, enabling modern air transport. Today, virtually all large aircraft rely on turbine propulsion, yet small aircraft, both manned and unmanned, have not exploited the advantages of turbines for propulsion.

Posted in: Articles, Aeronautics, Aerospace, Aviation, Electronic Components, Electronics, Electronics & Computers, Power Management, Power Supplies, Mechanical Components, Power, Power Transmission, Propulsion

Hands-on Cybersecurity Studies: Multi-Perspective Analysis of the WannaCry Ransomware

Ransomware is malware that obstructs a user from accessing digital assets through various mechanisms. These assets are held hostage and inaccessible until the user pays a ransom. In most cases, this is accomplished using encryption where, once the malicious program executes, it will target and encrypt certain files and will release the decryption key at the time of payment. Some ransomware instances target only certain common user-generated files such as media and documents. In this case, system files and others required for the operating system to function correctly (user authentication, process execution, etc.) are unaffected. Others encrypt much more and seek to lock out entire systems.

Posted in: Briefs, Aerospace, Defense, Software

How Miniaturized Distributed Modular Architecture Advances Avionics Design

Most of today’s collision-avoidance, in-flight-entertainment (IFE), air-to-ground-communications, and other avionics systems employ electronics packaging based on the Aeronautics Radio INC (ARINC) 600 standard. Compared to the older ARINC 404 standard dating from the 1970s that defined “black box” enclosures and racks within aircraft, ARINC 600 specified a Modular Concept Unit (MCU) – the basic building block module for avionics. An ARINC 600 metal enclosure can hold up to 12 MCUs, allowing a lot of computing power to be placed in a centralized “box.” By making it possible to run numerous applications over a real-time network, ARINC 600 enabled “next generation” integrated modular avionics (IMA).

Posted in: Articles, Aeronautics, Aerospace, Aviation, Communications, Wireless, Data Acquisition, Defense, Internet of Things, Fastening, Joining & Assembly, Fiber Optics, Optics, Data Acquisition, Sensors

Mine Roller

Rostec State Corporation
Moscow, Russia
+7 (495) 287-25-25

Chelyabinsk Tractor Plant, part of UralVagonZavod Group belonging to Rostec State Corporation, has developed a mine roller to be installed on "ironclads” — models B10M2S and B12S armored tractors. The B10M2S is an armored bulldozer designed and built by Company Uralvagonzavod (UVZ), a subsidiary of Rostec State Corporation. The bulldozer, which has a maximum weight of 22,800 kg (50,265 lbs), is powered by a 190 hp YaMZ-236 diesel engine, giving it a top speed of 11 km/h (6.8 mph). Tractors with a mine roller are more maneuverable than mine-clearing tanks and have a longer service life, which makes them optimal for humanitarian demining. Production of a prototype mine-clearing tank was scheduled to begin in the first quarter of 2019.

Posted in: Application Briefs, Defense, Industrial Controls & Automation, Manufacturing & Prototyping, Rapid Prototyping & Tooling, Machinery, Mechanical Components

Pathfinder Radar ISR and SAR Systems: Tactical Eyes for the Warfighter

Sandia National Laboratories’ (Albuquerque, NM) Radar Intelligence, Surveillance and Reconnaissance (ISR) systems enable a new product paradigm in radar capabilities and modalities. With the ability to shrink sensor size, increase resolution, raise image quality, and advance realtime onboard processing, Sandia has been producing next-generation systems for nearly three decades. Sandia specializes in the full system design of Synthetic Aperture Radar (SAR), Ground Moving Target Indicator (GMTI), target recognition, and other sensor systems for the Department of Defense, other government agencies, and industry partners.

Posted in: Articles, Aeronautics, Aerospace, Aviation, Data Acquisition, Defense, Electronic Components, Electronics, Electronics & Computers, Imaging, Optical Components, Optics, Antennas, RF & Microwave Electronics, Data Acquisition

Thermal Conductivities of Some Polymers and Composites

Thermoset polymers are good electrical insulators that are used in applications ranging from electronics to composite armor. They are rather poor thermal conductors, however.

Posted in: Briefs, Aerospace, Defense, Electronic Components, Electronics, Electronics & Computers, Thermal Management, Composites, Materials, Instrumentation, Measuring Instruments, Test & Measurement

Preventing Ice Buildup on Electric Aircraft

Fuel economy is one of the biggest challenges facing the aviation industry. To overcome these challenges, researchers are working on next generation aviation systems.

Posted in: Articles, Aeronautics, Aerospace, Aviation, Power Management, Thermal Management, Cameras, Imaging, Composites, Materials, Fluid Handling, Mechanical Components, MEMs, Power, Power Transmission

Nominal High-Altitude Electromagnetic Pulse (HEMP) Waveforms

Even before the Trinity nuclear test in July of 1945, physicists predicted a transient electromagnetic signal would be caused by high-energy photons released from the detonation interacting with the air around the detonation. Predictions of these signals were difficult to make due to the complexity of the physics unleashed by the detonation.

Posted in: Briefs, Aerospace, Defense, Photonics, RF & Microwave Electronics, Instrumentation, Measuring Instruments, Test & Measurement

Peridynamic Modeling: An Alternative Approach to Analyzing Material Failure

A critical technology challenge for structural material applications in the aerospace and defense industries is to have a means for the reliable analysis of material damage and failure. Experimental structural assessments are typically expensive and often do not provide full information about coupled, multiscale damage processes. Computer-aided analysis has established itself as a useful tool for complementing experimental structural assessments. A comparative summary of current computer-aided approaches is presented in the accompanying table.

Posted in: Articles, Aeronautics, Aerospace, Aviation, Materials, Computer-Aided Design (CAD), Computer-Aided Engineering (CAE), Computer-Aided Manufacturing (CAM), Software, Measuring Instruments, Monitoring, Test & Measurement

Real-Time Heuristics and Metaheuristics for Static and Dynamic Weapon Target Assignments

Projectile weapons have been a consistent threat of hostilities throughout history. Military advantage has always been aided by the capacity to inflict damage from a distance. In the 20th century, missile technology advanced to the point that an adversary had the potential to attack a protected asset from great distances. To neutralize this stand-off threat, the concept of air defense evolved. However, as the ability to reduce a missile threat increased, so, too, did the quantity and quality of missiles available, and research into the effective allocation of air defense resources emerged.

Posted in: Briefs, Aerospace, Defense