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3rd Thermal and Fluids Engineering Conference (TFEC)

ISSN: 2379-1748


Robert Jackel
Universidad Autonoma de San Luis Potosi, Dr. Manuel Nava No. 8, Zona Universitaria Poniente, 78290, San Luis Potosi, Mexico

Geydy Luz Gutierrez Urueta
Universidad Autónoma de San Luis Potosí, Dr. Manuel Nava No. 8, Zona Universitaria Poniente, 78290, San Luis Potosí, México

Fidencio Tapia Rodrıguez
Universidad Panamericana (Campus Guadalajara), Facultad de Ingenierıa, Zopopan, Jalisco, 45010, Mexico

Juliana Braga Rodrigues Loureiro
Mechanical Engineering Program (PEM/COPPE/UFRJ) C.P. 68503, Rio de Janeiro, 21941-972, Brazil; Scientific Division, National Institute of Standard (INMETRO), Rio de Janeiro, Brazil

Cintia Monreal Jimenez
Autonomous University of San Luis Potosı, San Luis Potosı, SLP, 78290, Mexico

DOI: 10.1615/TFEC2018.asp.024485
pages 61-66

KEY WORDS: Aircraft Icing, Ice Formation, Climatic Wind Tunnel, Pitot probe


In this work, the cool-down and ice accumulation on an aeronautic Pitot probe (PP) in case of a heating element failure was studied experimentally in a climatic wind tunnel (CWT). Through injector nozzles located in front of the test section, atomized water was introduced into the tunnel in order to simulate the presence of humidity found in different cloud types. Using high-resolution cameras, the subsequent ice accumulation along the PP was recorded. The experiment runs were taken out under three different conditions, controlling the air temperature, flow velocity and liquid water content (LWC) in the test section. The flow conditions in the CWT have dynamic similarity with those encountered at cruise speeds of common single-engined propeller aircraft. Analyzing the indicated pressure measured through the PP's pressure ports, it was possible to correlate the (cone-shaped) ice accumulation on the stagnation pressure port to the measurement error for one test condition. For the other two test conditions, it was observed that the ice cone's lateral section grew so fast, that it did not allow the blockage of the stagnation port, keeping it in contact with the atmosphere and thus performing correctly.

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