Manufacturing & Prototyping

Tension Stiffened and Tendon Actuated Manipulator

This configuration offers mechanical advantage and improved efficiency over existing arms that use weighty gearboxes and motors. Langley Research Center, Hampton, Virginia NASA’s Langley Research Center is developing a robotic arm with lightweight joints that provide a wide range of motion. The envisioned design provides users with a long reach and numerous degrees of freedom. The arm, ideal for use in aquatic environments or for manipulation of light terrestrial loads, consists of articulating booms connected by antagonistic cable tension elements. The arm elements are structurally efficient and lightweight, and support compact packaging. The inherent mechanical advantage provided by the tendon articulation allows the use of small, efficient motor systems. The manipulator can be scaled over a large range from 10 m (load-bearing arm) to over 1000 m (submersible or float-supported arm). Current efforts are focusing on a 15-m prototype and a 300-m subsystem to test the unique robotic architecture. NASA is seeking partners to assist with the development of its concept system for specific applications.

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Lattice Structures Coating Concept for Efficient Thermal Linking Beds

Marshall Space Flight Center, Alabama Conventional air revitalization technology for removal of CO2, moisture, and trace organic contaminants usually involves a packed bed of sorbent pellets that can be regenerated using a concept similar to that of pressure swing adsorption (PSA). Additional heat input for thermal regeneration is preferred during the adsorption-desorption process to increase the regeneration efficiency. Typically, a pair of adsorber modules consisting of the same sorbent material with identical loading capacity is placed in parallel and work in tandem, where one module adsorbs the contaminants from the process air while the other is in regeneration mode. The two adsorber modules have separate housings and may be placed in separate locations.

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Lattice Structures Coating Concept for Efficient Thermal Linking Beds

Marshall Space Flight Center, Alabama Conventional air revitalization technology for removal of CO2, moisture, and trace organic contaminants usually involves a packed bed of sorbent pellets that can be regenerated using a concept similar to that of pressure swing adsorption (PSA). Additional heat input for thermal regeneration is preferred during the adsorption-desorption process to increase the regeneration efficiency. Typically, a pair of adsorber modules consisting of the same sorbent material with identical loading capacity is placed in parallel and work in tandem, where one module adsorbs the contaminants from the process air while the other is in regeneration mode. The two adsorber modules have separate housings and may be placed in separate locations.

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A Statistically Based Approach to Broadband Liner Design and Assessment

The current method targets the entire broadband frequency spectrum simultaneously. Langley Research Center, Hampton, Virginia The broadband component of fan noise has grown in relevance with the utilization of increased bypass ratio and advanced fan designs. Thus, while the attenuation of fan tones remains paramount, the ability to simultaneously reduce broadband fan noise levels has become more attractive. Advanced manufacturing techniques have also opened new possibilities for the implementation of broadband liner concepts. This innovation is an integrated method for the design and evaluation of novel broadband acoustic liner concepts for complex engine configurations.

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Connection and Repair Techniques for Capillary Tubing in Restrictive Areas and Gas Chromatography Applications

John F. Kennedy Space Center, Florida Capillary columns offer challenges in gas chromatography (GC) work due to their small size and fragile nature. Typical repair techniques to join two capillary columns require cumbersome metal fittings. This solution is not applicable in all situations due to size and mass limitations. Another repair or joint technique involves the use of polyimide glue with a tapered glass union. Without the bulky glass fitting, this technique is difficult to perform without plugging the column; the low-viscosity glue wicks up the capillary column and fills the small opening of the joint. Polyimide is also a problem due to its hydrolysis when trying to analyze water; the polyimide glue interacts with the water in the sample and affects the analysis. These solutions don’t support a repair of capillary columns for water analysis in a small gas chromatograph module.

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Dual-Channel Transceiver

Red Rapids, Richardson, TX, introduced the Model 372 FPGA-configurable dual-channel transceiver that features a dual-channel 16-bit analog-to-digital converter (ADC) and dual-channel 16-bit digital-to-analog converter (DAC) clocked at 310 MHz. The converters are coupled to a Xilinx Kintex-7 FPGA that is also connected to high-throughput SRAM. The transceiver is available on a single XMC, CCXMC, or PCI Express half-length form factor board. The SRAM interfaces to the FPGA through separate 18-bit read and write ports to achieve a combined 8 Gbytes/sec data transfer rate.

Posted in: Articles, Aerospace, Manufacturing & Prototyping

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Rittal’s Hannover Fair Contest Trip Closes with Facility Tours

After a full week in Germany, Rittal Corporation (www.rittal.us), the world’s largest enclosure manufacturer and a leader in thermal management of electrical, electronic, and IT equipment, brought its “Win a Trip to Hannover Fair with Rittal!” contest to a close with tours of three of its facilities.

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