Development of a Method to Test Holdover Times of Deicing and Anti-Icing Fluids in a Cold Room Using Artificially Generated Snow.
Abstract
A new method to test deicing fluids under laboratory conditions has been successfully demonstrated. This method generates artificial snow by grinding an ice core fed into a horizontally oriented rotating drill bit. The system is capable of producing snowfall rates from 5 to 50 gm/dm(exp 2)/hr over the area of a 30- x 50-cm frosticator plate. Since the snowfall rate can be accurately controlled, other variables such as temperature and fluid type can be varied independently in order to determine the dependence of failure time on each of the variables separately. The current version of the system produces failure times shorter than outdoor and indoor test results of the same fluid type under similar conditions. Preliminary analysis suggests that this may be due to the continuous nature of the snow generation method used in the current system compared to the intermittent snow application techniques used in previous tests.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1999
- Accession Number
- ADA359759
Entities
People
- Allan Hills
- Charlie Knight
- Roy M. Rasmussen
Organizations
- National Center for Atmospheric Research