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Camera Sensor Module

The VRmTS-20 from VRmagic (Mannheim, Germany) is an external sensor module for the D3 intelligent camera platform. With its compact dimensions of 26 x 26 mm and the flexible cable connection to the camera base unit, the module is particularly suitable for applications with limited or angled space. The sensor module is available as OEM version and as COB S-mount M12 version with different lenses and filter glasses.

Posted in: Products, Photonics

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Circular Variable ND Filters

Reynard Corporation (San Clemente, CA) recently announced the complete customization of their Circular Variable Neutral Density (CVND) Filters. This technology is best used in high quality optical systems to change the intensity of light from 100% to less than 0.1%. As the filter rotates, the beam intensity is customized due to the density variation of a gradient metallic coating around the filter. Used from the UV to the far infrared, density neutrality can be achieved for narrow band applications, such as lasers, to wide band applications, such as the spectrum of white light.

Posted in: Products, Photonics

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High-Shock Sensors

Diversified Technical Systems (Seal Beach, CA) has released the 6DX PRO, a high-shock sensor with six degrees of freedom. The three angular rate sensors (18000 or 50000 deg/sec) deliver position data, while the three accelerometers (2000 or 20000 g) are rated for high-impact environments. The 19 × 19 × 14.5-mm enclosure weighs 12 grams. The 6DX PRO is also sealed, IP67 rated, and compliant with NHTSA, FAA, ISO 6487, and SAE J211 practices.

Posted in: Products, Sensors

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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

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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

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Mass Gauging Demonstrator for Any Gravitational Conditions

Marshall Space Flight Center, Alabama This concept uses an optical interferometric method to determine the density and/or pressure of the gas state contained with tank ullage. The system is similar to compression tank volume methods. By using an optical interferometric technique to determine gas density and/or pressure, a much smaller compression volume or higher-fidelity measurement is possible.

Posted in: Briefs

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Multiport Hat Coupler for Electronically Steerable Antenna Testing

This technology provides the same performance as an anechoic closet, but at two orders of magnitude lower cost. Lyndon B. Johnson Space Center, Houston, Texas This invention provides a lower-cost means for verifying the scanning functionality of an electronically steerable (i.e. phased array) antenna (PAA) compared to existing methods that use a scanning probe or scanning test fixture and surrounding anechoic enclosure. This design is comprised of a standard test hat that has been modified to include additional probes located in the positive and negative directions of each scan axis. RF measurements taken from these additional probes provide an estimate of the beam-pointing angle. This solves the problem of verifying the platform-installed antenna’s beam-pointing functionality without the relatively high cost of a conventional anechoic chamber with a scanning probe or scanning test fixture.

Posted in: Briefs

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