Special Coverage

Distributed Propulsion Concepts and Superparamagnetic Energy Harvesting Hummingbird Engine
Wet Active Chevron Nozzle for Controllable Jet Noise Reduction
Magnetic Relief Valve
Locking Mechanism for a Flexible Composite Hinge
Active Aircraft Pylon Noise Control System
Unmanned Aerial Systems Traffic Management
Method of Bonding Dissimilar Materials
Sonar Inspection Robot System

Will we be a “multi-planetary” species?

This week's Question: In recent years, hundreds of millions of dollars have been invested into space ventures. SpaceX, an advanced spacecraft manufacturer founded by Elon Musk, has completed more than 30 successful launches since 2006, delivered cargo to the International Space Station, and secured contracts with NASA and other clients. Musk envisions the colonization of Mars as soon as 2022. In September, speaking to the International Astronautical Congress in Mexico, Musk described a 400-foot-tall rocket that would send 100 colonist-passengers at a time to Mars over a period of decades.“One [path] is that we stay on Earth forever and then there will be an inevitable extinction event,” Musk said. “The alternative is to become a spacefaring civilization, and a multi-planetary species.”What do you think? Will we be a “multi-planetary” species?

Posted in: Question of the Week, Aeronautics


dB or not dB? Everything you ever wanted to know about decibels but were afraid to ask...

True or false: 30 dBm + 30 dBm = 60 dBm? Why does 1% work out to be -40 dB one time but then 0.1 dB or 0.05 dB the next time? These questions sometimes leave even experienced engineers scratching their heads. Decibels are found everywhere, including power levels, voltages, reflection coefficients, noise figures, field strengths and more. What is a decibel and how should we use it in our calculations? This Application Note is intended as a refresher on the subject of decibels.

Posted in: White Papers, White Papers, Aeronautics, Defense, RF & Microwave Electronics


How to Make Low Flow Measurements Using Turbine Flow Meters

Accurate low flow measurement represents significant challenges in many applications. Some typical low flow applications in the aerospace market include: small UAV fuel consumption, satellite thruster fuel consumption, and fuel/chemical/water injection. The low dynamic energy associated with flow rates down to 0.001 GPM exceed the capabilities of most mechanical flow meters and force the use of less accurate flow meter technologies.

Posted in: White Papers, Instrumentation, Mechanical Components, Data Acquisition, Sensors


Machine-Learning System Recognizes Sounds from Video

A machine learning system from the Massachusetts Institute of Technology (MIT) recognizes sounds by watching video. The neural network interprets natural sounds in terms of image categories, without hand-annotated training data.

Posted in: News, Machinery & Automation


DIGITAL PATHOLOGY: A Primer for Microscope Camera Selection

Most pathologists today use digital systems within their practices and research projects to communicate, store data, and analyze images. Whether it’s within clinical, forensic, surgical, or other branches of pathology, communication and consultation among specialists is greatly improved by the use of digital systems and enables faster diagnosis for patients.

Posted in: White Papers, Imaging, Medical, Optics, Photonics


Integration and Operational Guidelines for MEMS-Based Inertial Systems: Application that includes Magnetometers

A high performance inertial system that includes magnetometers can provide accurate platform heading information in a variety of applications and operational environments. However, performance depends greatly on where the inertial system is installed within the application. In our white paper, you’ll learn integration guidelines for inertial systems and operational compensation considerations. It includes information on:

Posted in: White Papers, Aeronautics, Electronics & Computers, Data Acquisition, Sensors


SWaP-C and Why Your Component Partner Matters

The military is continually pushing to decrease the size, weight, power and cost (SWaP-C) of its electronics, particularly for items carried by the troops. To meet these goals, everyone involved in designing and manufacturing the device needs to work together closely to ensure maximum efficiency of every component. This makes choosing the right partner crucial. Our white paper explores why SWaP-C is so important and includes information on:

Posted in: White Papers, Aeronautics, Defense, Electronics, Manufacturing & Prototyping


The U.S. Government does not endorse any commercial product, process, or activity identified on this web site.