Special Coverage


A Large-Eddy Simulation Model of the Atmospheric Boundary Layer

The model includes the interaction of various physical processes, including turbulence, clouds, precipitation, and radiation. NASA’s Jet Propulsion Laboratory, Pasadena, California The atmospheric boundary layer is the lowermost layer of the atmosphere and is host to a plethora of physical processes that significantly affect weather, climate, and air quality. In many applications, detailed information about the boundary layer is required at high temporal and spatial resolution. The main purpose of the current model is to provide accurate and finely resolved inspace and time predictions of the atmospheric boundary layer. High-resolution predictions of the boundary layer are typically pertinent in the development and evaluation of weather and climate models, in fundamental studies of atmospheric dynamics including clouds and precipitation, the dispersion of pollutants, and the development of remote sensing instruments.

Posted in: Briefs, Electronics & Computers, Simulation Software


Advanced Rolling Mechanics Analysis (AROMA) 1.0

Lyndon B. Johnson Space Center, Houston, Texas AROMA uses a boundary-element formulation to calculate normal and shear pressure distributions and sub-surface stresses for elastic bodies in contact. In addition to handling static normal and sheer loading, it also solves the contact problem for rolling elements such as bearings, traction drives, and wheel-to-rail interfaces. AROMA is a powerful and flexible tool for studying the tractive forces that arise during rolling in combination with kinematic effects, such as creepage and spin that are related to rolling element alignment. This GUI-based tool was developed in MATLAB, and can run within the MATLAB environment or as a standalone application.

Posted in: Briefs, Measuring Instruments


RR1P Rugged ATR Pluggable Canister RAID Data Storage Delivers Continuous Data Recording for ISR

RR1P removable canister RAID data storage system enables military ISR data to be removed from a plane, ship or ground vehicle in under two minutes. The canister connects to the ¾ ATR chassis with a military grade connector designed for 10,000 insertion cycles. It weighs only 25 pounds including a five pound removable canister with up to 19.2 TB of compact, rugged, high performance mobile RAID data storage.

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


New Innovations in 3D Measurement Software: Increased Portability for Laser Tracker Applications

One of the primary advantages of using Laser Tracker Technology is the ability to achieve precise accuracy over large measurement volumes. However, large scale measurements can be challenging when it requires the operator to move across long distances or climb onto large structures.

Posted in: On-Demand Webinars


Improve Safety and Stability Performance for Heavy Equipment using Simulation Methods

In order to ensure safety and stability, MSC is working with the Heavy Equipment Industry to conduct load prediction for structural safety, tip-over studies for stability analysis, as well as to study various accident scenarios in a virtual test environment.

Posted in: On-Demand Webinars


Multivariate Time Series Search Capability to Identify Complex Patterns in Large Datasets

Ames Research Center, Moffett Field, California There exist many datasets that can be viewed as multivariate time series, such as the daily high temperature at a locality, sensor recordings in diagnostic systems and scientific data, and music and video recordings. These time series reside in large repositories, and there is often a need to search for particular time series exhibiting certain types of behaviors. Many current approaches to time series search are too slow on large repositories, or constrain the range of possible queries.

Posted in: Briefs, Data Acquisition, Mathematical/Scientific Software


NGDCS Linux Application for Imaging-Spectrometer Data Acquisition and Display

NASA’s Jet Propulsion Laboratory, Pasadena, California A simple method of controlling recording and display of imaging spectrometer data in (airborne) flight was needed. Existing commercial packages were overly complicated, and sometimes difficult to operate in a bouncing plane. The software also was required to keep up with the imaging data rate, while still running on commodity hardware and a desktop operating system. Finally, the software needed to be as robust as possible — repeating a flight because of lost data is sometimes impossible, and always expensive.

Posted in: Briefs, Displays/Monitors/HMIs, Data Acquisition