Keyword: Vehicle health management (VHM)

Briefs: Aerospace

The Solenoid Valve Health Monitor System (SVHMS) was developed to remotely monitor the health of solenoid valves, lowering operational costs and increasing reliability by predicting valve failures before they...

Briefs: Sensors/Data Acquisition

Understanding how cars, planes, bridges, and other structures handle vibrations and dynamic loads can be critical to their design and performance. Researchers have developed a new way to...

Briefs: Software

For wireless networks that share time-sensitive information on the fly, it's not enough to transmit data quickly: that data also needs to be fresh. Consider the many sensors in your car. While it may...

Briefs: Information Technology
v-Anomica: A Fast Support Vector-Based Novelty Detection Technique

Outlier or anomaly detection refers to the task of identifying abnormal or inconsistent patterns from a dataset. While they may seem to be undesirable entities, identifying them has many potential applications in fraud and intrusion detection, medical research, and...

Who's Who: Aerospace

Scott Jensen and his team developed the Valve Health Monitoring System (VHMS), a technology designed for detecting deterioration in the...

Briefs: Physical Sciences
Maturation of Structural Health Management Systems for Solid Rocket Motors

An autonomous and automated spacecompliant diagnostic system concept was developed for condition-based maintenance (CBM) of rocket motors for space exploration vehicles. The system will provide real-time information on the integrity of critical structures on launch...

Briefs: Photonics/Optics

Since their market introduction in 1995, fiber Bragg gratings (FBGs) [wherein “fiber” signifies optical fiber] have emerged as excellent means of measuring such parameters as strain and...

Briefs: Information Technology
Condition Assessment and End-of-Life Prediction System for Electric Machines and Their Loads

An end-of-life prediction system developed for electric machines and their loads could be used in integrated vehicle health monitoring at NASA and in other government agencies. This system will provide on-line, real-time condition assessment and...

Briefs: Electronics & Computers
Modeling and Diagnostic Software for Liquefying-Fuel Rockets

A report presents a study of five modeling and diagnostic computer programs considered for use in an integrated vehicle health management (IVHM) system during testing of liquefying-fuel hybrid rocket engines in the Hybrid Combustion Facility (HCF) at NASA Ames Research Center.

Briefs: Motion Control

The gaseous hydrogen flow control vale (GH2FCV; see Figure 1) is a critical space shuttle component that controls the pressure of the hydrogen external tank during launch and ascent...

Briefs: Electronics & Computers

An electronic engine-health-monitoring system is based on (1) computation of frequency-phase-normalized (FPN) spectra from the digitized outputs of vibration sensors and (2) the use of...

Briefs: Electronics & Computers

A diagnostic signal-analysis technique, called the Phase Synchronized Enhancement Method (PSEM), has been developed. This method allows NASA engineers to retrieve any unique...

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