Development and validation of physics based models for ice shedding

Avani Gupta, Elizabeth Halloran, Lakshmi N. Sankar, Jose Palacios, Richard E. Kreeger

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Calculations for ice accretion and shedding are presented for a model scale rotor in hover. The aerodynamic characteristics of the rotor are first computed using a combined blade element-momentum theory. The effective angles of attack, and the local flow velocity are used within the NASA Glenn solver LEWICE to estimate the collection efficiency. The computed collection efficiency and the surface pressure distribution from a panel method within LEWICE are used to estimate the ice accretion over the rotor blades for a selected time interval. Finally, a force balance approach is used to establish shedding events where the centrifugal force over the ice mass exceeds the adhesive forces at the rotor surface and the cohesive forces between adjacent masses of ice. Preliminary comparisons with test data acquired at the Pennsylvania State Icing Research Tunnel are presented. Sensitivity of the ice shedding events to surface roughness, adhesive strength, cohesive strength, and ambient conditions is discussed.

Original languageEnglish (US)
Title of host publication44th European Rotorcraft Forum 2018, ERF 2018
PublisherNetherlands Association of Aeronautical Engineers
Pages1020-1028
Number of pages9
ISBN (Electronic)9781510879645
StatePublished - Jan 1 2018
Event44th European Rotorcraft Forum 2018, ERF 2018 - Delft, Netherlands
Duration: Sep 18 2018Sep 21 2018

Publication series

Name44th European Rotorcraft Forum 2018, ERF 2018
Volume2

Conference

Conference44th European Rotorcraft Forum 2018, ERF 2018
CountryNetherlands
CityDelft
Period9/18/189/21/18

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All Science Journal Classification (ASJC) codes

  • Control and Systems Engineering
  • Electrical and Electronic Engineering
  • Instrumentation
  • Aerospace Engineering

Cite this

Gupta, A., Halloran, E., Sankar, L. N., Palacios, J., & Kreeger, R. E. (2018). Development and validation of physics based models for ice shedding. In 44th European Rotorcraft Forum 2018, ERF 2018 (pp. 1020-1028). (44th European Rotorcraft Forum 2018, ERF 2018; Vol. 2). Netherlands Association of Aeronautical Engineers.