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Ethernet-to-HRDL Conversion Design

Dual Ethernet inputs are multiplexed into a single HRDL stream to accommodate Ethernet-based ISS instruments. Goddard Space Flight Center, Greenbelt, Maryland The International Space Station (ISS) uses a fiber optic High Rate Data Link (HRDL) standard for transferring data. ISS experiments, however, may prefer an Ethernet interface. This design allows ISS instruments to keep their Ethernet interface by converting the Ethernet data format into a format compatible with the ISS. The Express Logistics Carrier (ELC) incorporated this design on the ISS in 2010. The design was described with VHDL code. It has been implemented with an Actel RTAX Field Programmable Gate Array (FPGA). This FPGA is part of the Express Logics Carrier (ELC) onboard the ISS.

Posted in: Briefs, Electronics

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Conductive Inks Give New Meaning to the Term 'Printed' Circuit Boards

NASAs Marshall Space Flight Center has developed a novel nanosilver ink technology that provides a conductive ink system to suit a variety of printing applications. These include inkjet or direct-write 3D printing of electrodes, antennae or interconnects in printed electronic devices and systems, and applications where chemically etched, copper-printed circuit boards are used.

Posted in: On-Demand Webinars

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Advanced Magnetostrictive Regulator, Valve, and Force-to-Angle Sensor

The components are lightweight, compact, highly precise, and can operate over a wide range of temperatures and pressures. Marshall Space Flight Center, Alabama Typical aerospace rocket engines use valves to control the flow and pressures of propellant and pressurants. These typical valves are designed to operate with a mechanical, electromechanical, or pneumatic operator. They all have at least one, and often multiple, penetrations from the fluid to the operator’s prime mover. The penetrations are sources for leaks, failures, and are often considered to be unreliable for use in single string systems. Therefore, the fluid system designer frequently will utilize several parallel path valves, effectively doubling the resources needed to accomplish the task. These redundant valves allow for isolation of the potentially leaking fluid penetrations. If the systems cannot afford the multiple path approach, then the valves are subjected to high levels of testing and quality control, or utilize bellows or other expensive and difficult to handle/design and costly features.

Posted in: Briefs

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Simple Impedance Matched Planar Microwave Blocking Filter

Goddard Space Flight Center, Greenbelt, Maryland Thermal blocking filters find wide use in cryogenic applications ranging from quantum computing to ultra-low-noise detectors. They can be used to provide the environmental isolation between cooled devices and the warmer temperature supporting bias and readout circuitry. In particular, they are effective in rejecting thermal radiation, limiting radio frequency interference, and providing a convenient means of heat sinking or realizing a vacuum feedthrough for signal lines.

Posted in: Briefs

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High-Data-Rate Platform to Capture and Analyze Raw Baseband Clock/Data

NASA’s Jet Propulsion Laboratory, Pasadena, California The Space Communications and Navigation (SCaN) Testbed has a need to capture and analyze high-datarate (<2 Mbps required) baseband information sent over RF by the JPL Software-Defined Radio (SDR). An RF4425 front end, coupled with a MicroGate Synclink USB and custom C++ software back end, is being used to answer this need.

Posted in: Briefs

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Coming Soon - Accelerate Development of Powertrain ECUs with Virtual Hardware

In conjunction with SAE Automotive powertrain ECUs are increasingly reliant on complex MCUs/SoCs with multicore architectures, complex programmable timers, such as Generic Timer Module (GTM) and communication protocols that integrate CAN-FD, FlexRay, and Ethernet. Beyond the hardware components, there is also greater reliance on embedded software to achieve the required fuel efficiency/emission standards and the need to satisfy safety standards, such as ISO 26262. 

Posted in: Upcoming Webinars

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Coming Soon - Unlocking the Secrets of Amorphous Metals

What do bulk metallic glasses (BMGs), amorphous metals and liquid metals all have in common? Basically they’re all the same thing – non-crystalline metal alloys that are simultaneously glasses, metals, and liquids. Sounds impossible, doesn’t it? But it’s not. And they possess some incredible properties. Think of them as the shape-shifting superheroes of the materials world.

Posted in: Upcoming Webinars

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