Special Coverage

Active Aircraft Pylon Noise Control System
Unmanned Aerial Systems Traffic Management
Method of Bonding Dissimilar Materials
Sonar Inspection Robot System
Applying the Dynamic Inertia Measurement Method to Full-Scale Aerospace Vehicles
Method and Apparatus for Measuring Surface Air Pressure
Fully Premixed, Low-Emission, High-Pressure, Multi-Fuel Burner
Self-Healing Wire Insulation
Home

Lightweight Reflectarray Antenna for 7.115 and 32 GHz

Reflectarrays for two different frequency bands share the same aperture. A lightweight reflectarray antenna that would enable simultaneous operation at frequencies near 7.115 GHz and frequencies near 32 GHz is undergoing development. More precisely, what is being developed is a combination of two reflectarray antennas — one for each frequency band — that share the same aperture. (A single reflectarray cannot work in both frequency bands.) The main advantage of the single dual-band reflectarray is that it would weigh less and occupy less space than do two single-band reflectarray antennas.

Posted in: Briefs, TSP, Electronics & Computers

Read More >>

Alternative Controller for a Fiber-Optic Switch

This controller communicates via a serial instead of a parallel port. The figure is a simplified diagram of a relatively inexpensive controller for a DiCon VX (or equivalent) fiber-optic switch — an electromechanically actuated switch for optically connecting one or two input optical fibers to any of a number of output optical fibers. DiCon VX fiber-optic switches are used primarily in research and development in the telecommunication industry. This controller can control any such switch having up to 32 output channels.

Posted in: Briefs, TSP, Electronics & Computers

Read More >>

NASA Briefs

Glenn Research Center (Cleveland, OH) has designed a power supply for a cordless drill in which ultracapacitors, rather than batteries, are used to store energy. Whereas charging of batteries usually takes hours, ultracapacitors can be charged in seconds. Read more here.

Posted in: Blog

Read More >>

Techs of the Week

The Biomedical Center in Moscow has produced a vaccine that induces cytotoxic lymphocyte (CTL) clones and enables them to recognize and selectively kill Listeria- infected cells. As the lifetime of CTL clones is very long (three-seven years or more), the formulation could be used for both prophylaxis and treatment of Listeriosis, a serious bacterial infection often caused by eating contaminated foods. Respond to this Tech Need here.

Posted in: Blog

Read More >>

Smart Cars



Posted in: Blog

Read More >>

Technology Business Briefs

Vertical Take-Off and Landing with Fixed-Wing Speed and Efficiency This technology, already proven under a US Army contract, creates a hybrid aircraft that combines the best attributes of helicopters with the best attributes of fixed wing aircraft, i.e. VTOL and safe auto-rotation of gyroplanes with the efficiency, cost, and speed of fixed wing aircraft. The technology enables aircraft to achieve greater point-to-point (non airport) travel, at materially higher speeds and lower operating costs, while significantly enhancing safety standards. The design limit is 500 mph.

Posted in: Blog

Read More >>

Smooth Flying



Posted in: Blog

Read More >>

The U.S. Government does not endorse any commercial product, process, or activity identified on this web site.