Keyword: Testing Procedures

Test & Measurement

Products: Defense

Boothroyd Dewhurst, Wakefield, RI, announced Design for Manufacture and Assembly (DFMA®) 2019 software for analyzing parts and assemblies. DFMA utilizes a question-and-answer interface that...

Technology Leaders: Data Acquisition

The SENT (Single Edge Nibble Transmission) bus continues to gain acceptance across the automotive industry and is widely used to transmit high-resolution readings from...

Briefs: Test & Measurement

As powered flight expands to include electric propulsion technologies, aeronautics designers need to understand the electrical, aerodynamic, and structural...

Briefs: Electronics & Computers

Power amplifiers comprising InP-based high-electron-mobility transistors (HEMTs) in coplanar-waveguide (CPW) circuits designed for operation at frequencies of hundreds of gigahertz,...

Briefs: Test & Measurement

A method of making more-complex molecules from simpler ones has emerged as a by-product of an experimental study in outer-space atom/ surface collision physics. The...

Briefs: Test & Measurement
Purifying Nucleic Acids From Samples of Extremely Low Biomass

A new method is able to circumvent the bias to which one commercial DNA extraction method falls prey with regard to the lysing of certain types of microbial cells, resulting in a truncated spectrum of microbial diversity. By prefacing the protocol with glass-bead-beating agitation...

Briefs: Sensors/Data Acquisition

An alternative approach to apertureless near- field optical spectroscopy involving an atomic-force microscope (AFM) entails less complexity of equipment than does a prior approach....

Briefs: Test & Measurement

The ultra-stable beacon source (USBS) provides a laser-beam output with a very low angular jitter and can be used as an absolute angular reference to simulate a beacon in...

Briefs: Software
Injecting Artificial Memory Errors Into a Running Computer Program

Single-event upsets (SEUs) or "bitflips" are computer memory errors caused by radiation. BITFLIPS (Basic Instrumentation Tool for Fault Localized Injection of Probabilistic SEUs) is a computer program that deliberately injects SEUs into another computer program, while the latter...

Briefs: Software
Simulating the Gradually Deteriorating Performance of an RTG

Degra (now in version 3) is a computer program that simulates the performance of a radioisotope thermoelectric generator (RTG) over its lifetime. Degra is provided with a graphical user interface that is used to edit input parameters that describe the initial state of the RTG and the...

Blog: Test & Measurement
Current Attractions

In a crash, keeping the occupants alive and uninjured is paramount. As a part of the Structural Dynamics Branch in the Research and Technology Directorate at NASA Langley, the Landing and Impact Research Facility (LandIR) tests the safety of aircraft by crashing them. Dr. Karen Jackson is part of the research team.

Briefs: Test & Measurement
Wireless Data-Acquisition System for Testing Rocket Engines

A prototype wireless data-acquisition system has been developed as a potential replacement for a wired data-acquisition system heretofore used in testing rocket engines. The traditional use of wires to connect sensors, signal-conditioning circuits, and data acquisition circuitry is...

Briefs: Unmanned Systems

The Dryden Flight Research Center (DFRC) has been a partner in many uninhabited-aerial-vehicle (UAV) test programs. Our participation has largely been in the areas of...