Manufacturing & Prototyping

Making Flexible Ablators that are Flexible Char Formers

Ames Research Center, Moffett Field, California An approach was developed for making low-density, flexible ablators for a thermal protection system (TPS) from a flexible fibrous carbon substrate and a polymer resin. The material is foldable and stowable, and can be deployed in space without compromising performance. In addition, the material can be stowed in space for very long periods of time (years) without compromising deployability or performance. These flexible ablators offer an alternative to rigid TPS materials, thereby reducing design complexity and cost. On charring, the flexible ablative TPS retains its flexibility. After charring, the TPS has comparable flexibility and mechanical properties to the virgin material.

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Method for Providing Semiconductors Having Self-Aligned Ion Implant

Refined self-aligned ion implantation for improved SiC high-temperature transistors. John H. Glenn Research Center, Cleveland, Ohio This is a modification to technology for realizing durable and stable electrical functionality of high-temperature transistors. This modification is believed crucial to experimental implementation of SiC junction field effect transistors that electrically operated continuously at 500 °C for over 10,000 hours in an air ambient with less than 10% change in operational transistor parameters.

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Femtosecond Laser Processing of Metal and Plastics

Precision machining can be achieved with no thermal affects and minimal post-processing. Amada Miyachi America, Monrovia, California and Jenoptik, Jena, Germany While precise and fast, the down side to cutting with microsecond (ms) fiber lasers has been that the parts require a number of post-processing operations after they are cut, which add significantly to part cost, and can also damage mechanically delicate parts.

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Products of Tomorrow: June 2015

The technologies NASA develops don’t just blast off into space. They also improve our lives here on Earth. Life-saving search-and-rescue tools, implantable medical devices, advances in commercial aircraft safety, increased accuracy in weather forecasting, and the miniature cameras in our cellphones are just some of the examples of NASA-developed technology used in products today.

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Product of the Month: June 2015

Diversified Technical Systems, Seal Beach, CA, has introduced the SLICE Pro shock-hardened, mega-sample data acquisition system. The miniature SLICE data recorder can be mounted directly on the test article — no slip rings or telemetry are required. The recorder fits on virtually any moving or rotating part without altering test dynamics, and is rugged enough for extreme test environments. For applications like measuring torque on a drive shaft, SLICE mounts directly on the shaft next to the strain gauges. Each 3-channel “slice,” or layer, is modular and weighs less than 14 grams. The SLICE Pro is a complete solution with programmable sensor interface, adjustable filters, 16-bit ADC, and Ethernet communication. It features user-selectable sampling rates up to 1Msps/channel, data bandwidth options to 200 kHz, and supports full- and half-bridge sensors, strain gages, IEPE, voltage input, and thermocouples. Two software options, SLICEWare and DataPRO, enable users 6to enter sensor and sampling parameters, and the software automatically sets up the hardware. For Free Info Visit http://info.hotims.com/55590-120

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Explosion-Proof Encoder

BEI Sensors (Goleta, CA) announced the Model LP35 explosion-proof and flameproof, low-profile, hollow shaft encoder that features a 2.01" profile and is designed to meet UL, ATEX, and IECEx standards for operation directly in Division 1, Zone 1 environments such as oil and gas. The encoder features a standard removable terminal box, and eliminates the need for an additional intrinsic safety barrier. It is designed for oil and gas applications such as top drives, which have little space to install speed-sensing devices like encoders. The vibration-resistant encoder is built to withstand up to 250G for operation in harsh drilling applications, and operates in temperatures up to 85 °C (185 °F). The encoder’s terminal box configuration allows the unit to be pre-wired. For Free Info Visit http://info.hotims.com/55590-317

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Drive System Software

Festo (Hauppauge, NY) introduced PositioningDrives software for designing single-axis drive systems. Engineers input application requirements and the software details the information necessary to create a Festo component parts list, including electromechanical actuator, motor, drive, cables, and other accessories. The software also delivers documentation about the single-axis system to share with internal teams and end users. Once application parameters have been entered, the software identifies single-axis system combinations from a range of components, including electromechanical linear actuators, motors, gear units, drives, and software. Application details entered into the software consist of mounting orientation, load, stroke, and precision. There are also options for specifying the motion profile, including speeds, accelerations, and positioning times. In the design process, combinations of actuator, motor/gear unit, and drive are displayed graphically, and the degree of utilization is shown as a bar graph. For Free Info Visit http://info.hotims.com/55590-300

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