Event
International Conference on Icing of Aircraft, Engines, and Structures
Authors Abstract
Content
The term “3 inch ice shapes” has assumed numerous definitions throughout the years. At times it has been used to generally characterize large glaze ice accretions on the major aerodynamic surfaces (wing, horizontal stabilizer, vertical stabilizer) for evaluating aerodynamic performance and handling qualities after a prolonged icing encounter. It has also been used as a more direct criterion while determining or enforcing sectional ice shape characteristics such as the maximum pinnacle height. It is the authors’ observation that over the years, the interpretation and application of this term has evolved and is now broadly misunderstood. Compounding the situation is, at present, a seemingly contradictory set of guidance among (and even within) the various international regulatory agencies resulting in an ambiguous set of expectations for design and certification specialists. The focus of this paper is to provide a more complete and accurate historical accounting of “3 inch ice shapes” which is currently only speculative and incomplete within the public purview. It is the authors’ intent to provide a better collective understanding and appreciation for how the industry arrived at this current state.
Meta TagsDetails
DOI
https://doi.org/10.4271/2023-01-1434
Pages
6
Citation
Leopold, D., Malone, A., Bosetti, C., Macomber, J. et al., "3 Inch Ice Shapes, AB Initio," Advances and Current Practices in Mobility 6(3):1216-1223, 2024, https://doi.org/10.4271/2023-01-1434.
Additional Details
Publisher
Published
Jun 15, 2023
Product Code
2023-01-1434
Content Type
Journal Article
Language
English