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Wind tunnel simulation of the atmospheric boundary layer for studying the wind pattern at Centro de Lançamento de Alcântara
doi: 10.5028/jatm.2012.04044912

Ana Cristina Avelar*
Instituto de Aeronáutica e Espaço
São José dos Campos/SP - Brazil

Fabrício L. C. Brasileiro
Universidade Paulista
São José dos Campos/SP - Brazil

Adolfo Gomes Marto
Instituto de Aeronáutica e Espaço
São José dos Campos/SP - Brazil

Edson R. Marciotto
Instituto de Aeronáutica e Espaço
São José dos Campos/SP - Brazil

Gilberto Fisch
Instituto de Aeronáutica e Espaço
São José dos Campos/SP - Brazil

Amanda Fellipe Faria
Instituto de Aeronáutica e Espaço
São José dos Campos/SP - Brazil

*author for co rrespondence: anacristina.avelar@gmail.com

Abstract:
Centro de Lançamento de Alcântara is the main Brazilian launching center. In spite of presenting several desirable aspects, due to its proximity to the Equator, it has a peculiar topography because of the existence of a coastal cliff, which modifies the characteristics of the atmospheric boundary layer. This may affect rocket-launching operations, especially when associated with safety procedures. This work is a continuation of previous experimental studies about the airflow pattern at Centro de Lançamento de Alcântara. An improved way of simulating the atmospheric boundary layer in a short-test section wind tunnel using passive methods is presented here. It is also presented a preliminary analysis of the airflow pattern in Centro de Lançamento de Alcântara, at specific positions as the edge of cliff and around the mobile integration tower, from wind tunnel measurements using particle image velocimetry. Three values of Reynolds number, based on the coastal cliff height, l, ranging from 6.8x105 to 2.0x106, were considered.

Keywords:

Atmospheric Flow, Wind Tunnel, Boundary Layer, Centro de Lançamento de Alcântara.

J. Aerosp. Technol. Manag., São José dos Campos, Vol.4, No 4, pp. 463-473, Oct.-Dec., 2012
Received: 04/09/2012
Accepted: 10/10/2012


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