Accession Number : ADA259886


Title :   Solar-Powered Light Emitting Diode Power Line Avoidance Marker Design.


Descriptive Note : Final rept.,


Corporate Author : ARMY AEROMEDICAL RESEARCH LAB FORT RUCKER AL


Personal Author(s) : Snook, Ellen H ; Rash, Clarence E ; Martin, John S ; Levine, Richard R ; Johnson, Parley P


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a259886.pdf


Report Date : Dec 1992


Pagination or Media Count : 34


Abstract : In-flight wire strikes are a constant threat to U.S. Army Aviation during all-weather, daytime and nighttime helicopter operations. Despite routine training on wire avoidance techniques, wire strikes continue to occur, with a majority of the mishaps historically occurring during training and maneuvering over familiar sites. In an effort to Increase the conspicuity of suspended cables and wires, the aviation training community at Fort Rucker, Alabama, currently employs a passive wire marking system which consists of international- orange colored spheres suspended from cables and wires in heavily trafficked airspace. During a previous evaluation of wire marker visibility, a solar- powered wire marker design was developed. This new design incorporates retroreflective material and light emitting diodes (LEDs) to provide greater range visibility and detectability during aided and unaided flight.... Wire marker, Light emitting diode, Solar power, Aided and unaided flights.


Descriptors :   *SPHERES , *SOLAR ENERGY , *AVIATION SAFETY , *LIGHT EMITTING DIODES , *ARMY AVIATION , *MARKER LIGHTS , FIBERGLASS , WEATHER , TRAINING , FLIGHT TRAINING , THREATS , VISIBILITY , MARKERS , ELECTRIC WIRE , ALL WEATHER , ORANGE(COLOR) , TELEPHONE LINES , AVOIDANCE , ALABAMA , ARMY , INTERNATIONAL , POWER , ELECTRIC CABLES , DAY , FLIGHT , HELICOPTERS , MATERIALS , WIRE , SITES , LIGHT


Subject Categories : Military Aircraft Operations
      Air Condition, Heating, Lighting & Ventilating
      Nuclear Physics & Elementary Particle Physics


Distribution Statement : APPROVED FOR PUBLIC RELEASE