Tech Briefs

NTTS Search and Reporting

Ames Research Center, Moffett Field, California The NASA Technology Transfer System (NTTS) is a NASA-created technology transfer workflow management system, a schema-less database management system used to track the life-cycle of NASA inventions. It is built on XDB, a NASA homegrown XML database. Because of its schema-less approach to store data, NTTS can host a cluster of distributed XDB nodes, referred to as GridXML data-storage framework (GDX). NTTS stores data associated with different modules like Invention Disclosures, Patent Applications, Contract Grants, and Partnership Agreements, etc. Different communities at NASA use a module or a group of modules to manage their domain workflow. With volumes of heterogeneous data stored in different modules on a schema-less storage framework, the challenge is to provide a flexible query Application Programming Interface (API) to perform traditional relational-model queries. This challenge is addressed by the NTTS Search API, the product of this invention.

Posted in: Briefs, Electronics & Computers

Read More >>

Researcher Spotlight: Imaging Software Improves Video Monitoring of Vital Signs

By detecting nearly imperceptible changes in skin color, emerging imaging technologies have been able to extract pulse rate, breathing rate, and other vital signs from a person facing a camera. The videography tools have struggled, however, to compensate for low light conditions, dark skin tones, and movement.

Posted in: Articles, Briefs

Read More >>

High Dynamic Range Imaging (HDRI) Upgrades Inspection Results

HDRI features capture details when the environment, or the objects themselves, are both bright and dark. Designers and operators of automated inspection systems have long been challenged with completing accurate inspections when those tasks required high dynamic range, or when there was a need to capture critical details in objects or environments with high contrast between their brightest and darkest areas.

Posted in: Articles, Briefs

Read More >>

Advanced Holography Offers 3D Fire Measurements

In a propellant fire, large molten aluminum drops form at the burning surface. The drops are lofted into the environment and can severely damage anything that they fall on. Liquid breakup must be understood to predict the scale and intensity of such fires.

Posted in: Application Briefs, Briefs

Read More >>

Cameras Provide Critical Data for NASA Rocket’s First Flight

On March 11, NASA tested the powerful five-segment booster for NASA’s new rocket, the Space Launch System. To provide critical data for the rocket’s first flight, eight cameras with more than 40 different settings — including varying exposures — were set up near the forward portion of the booster. During the two-minute test, the cameras were computer-controlled and cycled through pre-programmed settings.

Posted in: Application Briefs, Briefs

Read More >>

Quantitative Analysis of Failure Mode in Adhesively Bonded Test Specimens

A fluorescence visualization technique is used. Langley Research Center, Hampton, Virginia After adhesively bonded mechanical test specimens have been tested to failure, the failure mode must be interpreted and quantified. Areas of the adherent that are bare (no residual adhesive remains) have undergone adhesive failure. The remainder of the surface has undergone cohesive failure. The ability to distinguish and accurately quantify the relative amounts of cohesive and adhesive failure on a failed bonding surface is of tremendous importance in the field of mechanical testing, and for the development of bonded assemblies. Some adhesives (and adherents) are fluorescent, meaning they re-emit light at a different wavelength after being irradiated by some lighting source. This property allows for quantitative analysis of the adhesive failure mode (adhesive and cohesive). A digital image of the fluorescing adhesive or adherent can be analyzed and quantified using publicly available software to determine the relative areas of exposed and covered adherent surface.

Posted in: Briefs, TSP

Read More >>

Energy-Based Acoustic Measurement System for Rocket Noise

Marshall Space Flight Center, Alabama Development of the next generation of spaceflight vehicles has prompted a renewed focus on sound source characterization and near-field propagation modeling. Without advancements in these areas, large uncertainties in vibro-acoustic loading estimates on space vehicles and payloads may result in structural designs that are either insufficient or excessive.

Posted in: Briefs

Read More >>