Accession Number : ADB387179


Title :   Assessment of Refueling Hose Visibility


Descriptive Note : In-house rept. 29 Nov 2011-25 Sep 2012


Corporate Author : TASK CONSULTING TUCSON AZ


Personal Author(s) : Ellis, Sharon A ; Pinkus, Alan R ; Task, H L


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/b387179.pdf


Report Date : Oct 2012


Pagination or Media Count : 75


Abstract : A quantitative assessment of aerial refueling hose visibility was conducted by the 711 HPW/RHCV in response to a request from the Aerial Refueling Systems Advisory Group (ARSAG) and the Naval Air Systems Command, Fuel Containment and Aerial Refueling Systems (NAWCAD). The objective of this effort was to determine the visibility (contrast) of six different refueling hoses varying by color and markings including one never-used new hose and five with obvious signs of usage. The primary variable measured was the contrast between the markings and the hose under several illumination and viewing geometries as well as assessments made for other spectral band sensors. Additional subjective assessments were made of images captured using NVG, SWIR and LWIR sensors of each of the hoses samples. Results demonstrated that contrast between the refueling hose samples and markings are dependent on the viewing and illumination geometry, with the new, ?unused? hose sample markings at a much higher contrast ratio than the other five used samples. A discussion regarding the implications of these findings to other real-world conditions causing contrast degradation during aerial refueling is presented. Recommendations for further evaluations to assist in the determination of standards for minimum allowable contrast of refueling hose markings before cleaning or replacement are discussed.


Descriptors :   *HOSES , *REFUELING IN FLIGHT , *VISIBILITY , BAND SPECTRA , DEGRADATION , DETECTORS , DETERMINATION , FUELS , GEOMETRY , ILLUMINATION , IMAGES , MARKERS , RATIOS , REPLACEMENT , RESPONSE , SAMPLING , SIGNS AND SYMPTOMS , TEST AND EVALUATION , VARIABLES


Subject Categories : Military Aircraft Operations
      Pumps, Filters, Pipes, Tubing, Fittings & Vlvs


Distribution Statement : APPROVED FOR PUBLIC RELEASE