Analysis and Verification of the Icing Scaling Equations. Volume 1

• Main Author: Ruff, Gary A.
• Other Authors: ARNOLD ENGINEERING DEVELOPMENT CENTER ARNOLD AFS TN
• Format: Text
• Language: English
• Published: 1985
• Subjects: Aircraft; Snow; Ice and Permafrost; Numerical Mathematics; *ICE FORMATION; *SCALING FACTOR; *AIRFOILS; SUPERCOOLING; AERODYNAMICS; DROPS; THERMODYNAMICS; SCALE MODELS; MATHEMATICAL MODELS; THERMAL MODELS; ICE ACCRETION; Ice; permafrost
• Online Access: http://www.dtic.mil/docs/citations/ADA162226; http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA162226

The formation of ice on aircraft surfaces occurs during flight through supercooled droplets. Ice accretions on these surfaces usually degrade both aircraft performance and operational safety. For this reason, it has become important in the design and certification phases of system development to evaluate system performance degradation because of icing. A research program was conducted to evaluate the icing scaling requirements. The objectives of the study were (1) to evaluate the equations governing the icing process to identify proposed scaling parameters, (2) to develop a computer code to solve the various forms of the icing scaling equations, (3) to conduct tests to determine which, if any, of the proposed methods produced scale ice accretions, and (4) if an accurate set of icing scaling equations were found, to write a final computer code that could be used in icing tests. The scaling verification tests were conducted using full- and half-scale circular cylinders and full-, 1/3-, and 1/ 6-scale airfoil sections. Prepared in cooperation with Sverdrup Technology, Inc., Arnold AFS, TN.