Tech Exchange

Increased Steel Surface Friction

An organization seeks innovative processes or coatings for steel. The application requires that a normal force be applied between two lubricated steel surfaces. Excessive normal force results in system power losses and increase in wear; the desired solution will permanently increase the coefficient of friction so that the normal force can be minimized. Solutions could be based around altering or hardening the surface of the steel, or applying a coating to the steel or another material.

Posted in: Tech Needs, NASA Tech Needs

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Piezoelectric-Actuated Valves Bring Accuracy to Process Control Systems

The PACE Hf, a high-flow proportional valve utilizing a Parker Advanced Technology actuator, delivers 180 slpm of air at 30 psi. The product has low power requirements: steadystate 0.6 Watts max, cycling 15 Hz, 1.2 Watts. The Viva piezoelectric actuator provides repeatability and accuracy for the valve of 0.25% variability in 10 ms cycle times.

Posted in: Techs for License

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Synthetic Material Offers Touch-Feel of Genuine Leather

A synthetic leather material delivers a durable touch-feel. The design is based on the way that the human fingertip interacts with surfaces along four different axes of material properties. The fingertip determines whether a surface is soft or hard, smooth or coarse, wet or dry, and warm or cold. By discovering the relationship between the fingertip and the sensations produced by feeling high-quality, hide-based material, engineers set the appropriate physical properties.

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Long-Term Data Acquisition, Command, and Control of Spaceflight-Quality Laser Systems

NASA Goddard Space Flight Center is a leader in developing satellite-based laser technology for remote sensing measurements of the Earth and other planetary bodies. Laser performance for such missions must be highly efficient and stable over long periods of time in order to successfully accomplish the desired science goals of these missions. It is therefore critical to be able to measure and control multiple laser input and output parameters simultaneously and accurately over a period of time that significantly reduces risk.

Posted in: NASA Tech Needs

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Mirror Switches Between Reflective and Transparent States

A flexible mirror film electrically switches between reflective and transparent states. By applying (+) voltages, hydrogenation occurs and creates transparency. When (-) voltages are used, the switchable mirror returns to its original reflective state within 10 seconds. The technology allows switchlevel control of the passage of solar radiation, thereby reducing cooling load.

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Hovering Aerial Vehicles Use Wireless Energy Supplied from Ground

New electrically charged, polarized, proprietary alloys create thrust to lift small aircraft, commonly referred to as Personal Ultralight Vehicles (PAVs), without the need of a propeller, jet, balloon, or rockets. The ion electric air propulsion is considered a clean technology that has none of the carbon emissions or volatile fuels involved with combustion engines. A ground-based broadcast power system and onboard rectenna eliminates the need for onboard power storage and results in more lift range and higher payload.

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Manufacturing Methods to Deposit Inorganic Material Layers on Metal Substrates

A company seeks alternative ways of preparing crucibles for the vapor deposition process. Currently, up to a kilogram of an alkalihalide salt is melted electrically in a tantalum crucible within a vacuum chamber, and the vapor is deposited on a metal substrate. The resistance, conductivity, and heating patterns of each crucible — and the vapor cloud it produces — vary from crucible to crucible. The pattern of the cloud changes over time as crucibles age. A thick layer of an inorganic salt — between 400 and 500 micrometers — must be deposited on a metal substrate with microscopic evenness and regularity.

Posted in: Tech Needs, NASA Tech Needs

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