Assessment of Refueling Hose Visibility
In-house rept. 29 Nov 2011-25 Sep 2012
TASK CONSULTING TUCSON AZ
Pagination or Media Count:
A quantitative assessment of aerial refueling hose visibility was conducted by the 711 HPWRHCV 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.
- Military Aircraft Operations
- Pumps, Filters, Pipes, Tubing, Fittings and Valves