Briefs: Manufacturing & Prototyping
Material Gradients in Oxygen System Components Improve Safety

Oxygen system components fabricated by Laser Engineered Net Shaping™ (LENS™) could result in improved safety and performance. LENS™ is a near-net shape manufacturing process fusing powdered materials injected into a laser beam. Parts can be fabricated with a variety of elemental...

Briefs: Mechanical & Fluid Systems
Method for Cleanly and Precisely Breaking Off a Rock Core Using a Radial Compressive Force

The Mars Sample Return mission has the goal to drill, break off, and retain rock core samples. After some results gained from rock core mechanics testing, the realization that scoring teeth would cleanly break off the core after only a few millimeters of...

Briefs: Mechanical & Fluid Systems
Scoring Dawg Core Breakoff and Retention Mechanism

This novel core break-off and retention mechanism consists of a scoring dawg controlled by a set of two tubes (a drill tube and an inner tube). The drill tube and the inner tube have longitudinal concentric holes. The solution can be implemented in an eccentric tube configuration as well where...

Sampling cores requires the controlled breakoff of the core at a known location with respect to the drill end. An additional problem is designing a mechanism that can be...

Briefs: Mechanical & Fluid Systems
Rolling-Tooth Core Breakoff and Retention Mechanism

Sampling cores requires the controlled breakoff of the core at a known location with respect to the drill end. An additional problem is designing a mechanism that can be implemented at a...

Briefs: Mechanical & Fluid Systems
Vibration Isolation and Stabilization System for Spacecraft Exercise Treadmill Devices

A novel, passive system has been developed for isolating an exercise treadmill device from a spacecraft in a zero-G environment. The Treadmill 2 Vibration Isolation and Stabilization System (T2-VIS) mechanically isolates the exercise treadmill from the...

Briefs: Medical
Microgravity-Enhanced Stem Cell Selection

Stem cells, both embryonic and adult, promise to revolutionize the practice of medicine in the future. In order to realize this potential, a number of hurdles must be overcome. Most importantly, the signaling mechanisms necessary to control the differentiation of stem cells into tissues of interest...

Briefs: Medical
Diagnosis and Treatment of Neurological Disorders by Millimeter-Wave Stimulation

Increasingly, millimeter waves are being employed for telecomm, radar, and imaging applications. To date in the U.S, however, very few investigations on the impact of this radiation on biological systems at the cellular level have been undertaken. In the beginning,...

Multi-point, multi-axis measurement of position can be valuable in a variety of applications that require high-speed data acquisition and a high degree...

Briefs: Physical Sciences
Passive Vaporizing Heat Sink

A passive vaporizing heat sink has been developed as a relatively lightweight, compact alternative to related prior heat sinks based, variously, on evaporation of sprayed liquids or on sublimation of solids. This heat sink is designed for short-term dissipation of a large amount of heat and was originally intended...

Briefs: Physical Sciences
Remote Sensing and Quantization of Analog Sensors

This method enables sensing and quantization of analog strain gauges. By manufacturing a piezoelectric sensor stack in parallel (physical) with a piezoelectric actuator stack, the capacitance of the sensor stack varies in exact proportion to the exertion applied by the actuator stack. This, in...

Briefs: Physical Sciences
Helium-Cooled Black Shroud for Subscale Cryogenic Testing

This shroud provides a deep-space simulating environment for testing scaled-down models of passively cooling systems for spaceflight optics and instruments. It is used inside a liquid-nitrogen-cooled vacuum chamber, and it is cooled by liquid helium to 5 K. It has an inside geometry of...

Briefs: Physical Sciences
Phase Retrieval for Radio Telescope and Antenna Control

Phase-retrieval is a general term used in optics to describe the estimation of optical imperfections or “aberrations.” The purpose of this innovation is to develop the application of phase retrieval to radio telescope and antenna control in the millimeter wave band.

Briefs: Information Technology
Receive Mode Analysis and Design of Microstrip Reflectarrays

Traditionally microstrip or printed reflectarrays are designed using the “transmit mode” technique. In this method, the size of each printed element is chosen so as to provide the required value of the reflection phase such that a collimated beam results along a given direction....

Briefs: Information Technology
Chance-Constrained Guidance With Non-Convex Constraints

Missions to small bodies, such as comets or asteroids, require autonomous guidance for descent to these small bodies. Such guidance is made challenging by uncertainty in the position and velocity of the spacecraft, as well as the uncertainty in the gravitational field around the small body....

Acoustics researchers at the University of Adelaide in Australia are developing a computer model to predict the noise output from wind farms so they can accurately and quickly assess the effectiveness of...

Waleed Abdalati, on January 3rd of this year, became NASA’s chief scientist. He will serve as the principal adviser to the NASA administrator on agency science...

Podcasts
Dr. Waleed Abdalati, NASA Chief Scientist, NASA Headquarters, Washington, DC

Waleed Abdalati, on January 3rd of this year, became NASA’s chief scientist. He will serve as the principal adviser to the NASA administrator on agency science programs, strategic planning, and the evaluation of related investments.

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Machine vision combines a range of technologies to provide useful outputs from the acquisition and analysis of images. Used primarily for inspection and robot guidance, the process...

Acoustic micro imaging uses a moving transducer that pulses ultrasound into materials and receives the return echoes from material interfaces. Images made from the echo signals may show...

For five years, Michael Lunoe, President of Zorg Industries, had been in need of a camera system that could identify objects and provide accurate distance from the rear of a vehicle.

Products: Imaging
Industrial Cameras

The Imaging Source, Charlotte NC, has released two MegaPixel industrial cameras. The cameras include a Sony CCD ICX274, 1/1.8" sensor; a resolution of 1600 × 1200 pixels; a frame rate of 15 fps; a USB 2.0 or GigE...

Products: Imaging
Frame Grabber/Video Streamer

Foresight Imaging, Chelmsford, MA, offers the AccuStream Express HD+™ frame grabber and video streamer, featuring a high performance PCI Express x4 board design. The device acquires video from non-standard and...

Products: Imaging
Infrared Snapshot Camera

Sensors Unlimited — Goodrich ISR Systems, Princeton, NJ, announces the SU640KTS, a large-format indium gallium arsenide (InGaAs) high-resolution shortwave infrared (SWIR) snapshot video camera. The imager meets all Conformite Europeene (CE) and U.S. Federal Communications Commission (FCC) standards for radiated and...

Teledyne DALSA, Billerica, MA, a Teledyne Technologies company, has announced its BOA IDR optical inspection product. Features include identification and grading capabilities for part tracking based on codes,...

Products: Imaging
LED Video Display

Multi ChipLEDs from OSRAM Opto Semiconductors, Sunnyvale, CA, have been used by FormoLight Technologies, Inc., Taipei, Taiwan, to develop a 150" diagonal LED video display.

Products: Imaging
High-Speed Imaging System

Photron, San Diego, CA, has introduced the IDP Express R2000 system. The R2000 features an on-board field-programmable gate array (FPGA) to provide developers access to the open-ended architecture. The new system...

Products: Imaging
Thermal Scanning System

Invisual E. Inc., Toronto, Ontario, Canada, offers an in-process, real-time thermal scanning system for welding inspection and batch process monitoring. The system utilizes the thermal distribution of the...

Products: Imaging
Stainless Steel Sensor

The ZM Series from Optex FA Sensors, West Des Moines, IA, provides durability with a SUS316L stainless steel housing and IP69K protection conforming to the IEC60529 rating system. The self-contained sensor meets...

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