Piezoelectric materials generate mechanical movement when subjected to an electric current and generate electrical charge in response to mechanical stress. Langley researchers developed a piezoelectric material that is superior in several ways to those that are currently commercially available. It is tougher, should allow lower voltage operation, has far greater displacement, has greater mechanical load capacity, can be easily produced at a relatively low cost, and lends itself well to mass production. Their system was used to provide automatic dependent surveillance-broadcast capability for aircraft operating within FAA temporary flight restricted areas. Another applications project involved NASA, the FAA and industry partners, which together provided the technology for a revolutionary new system used during the 1996 Summer Olympic Games to move air traffic efficiently and safely in uncontrolled airspace.
Ground crews monitor aircraft positions and then relay the information to the pilots.
Their VHF GeoNet digital data link network was used to provide automatic dependent surveillance-broadcast capability for aircraft operating within FAA temporary flight restricted areas. Application projects originate in various ways, including from requests for assistance from other government agencies or NASA technologists themselves.