Model of the aerodynamic behavior of a pararotor

Nadal Mora, Vicente J. and Sanz Andres, Angel Pedro and Cuerva Tejero, Alvaro (2006). Model of the aerodynamic behavior of a pararotor. "Journal of Aircraft", v. 46 (n. 3); pp. 1893-1903. ISSN 0021-8669. https://doi.org/10.2514/1.21435.

Description

Title: Model of the aerodynamic behavior of a pararotor
Author/s:
  • Nadal Mora, Vicente J.
  • Sanz Andres, Angel Pedro
  • Cuerva Tejero, Alvaro
Item Type: Article
Título de Revista/Publicación: Journal of Aircraft
Date: 2006
ISSN: 0021-8669
Volume: 46
Subjects:
Faculty: E.T.S.I. Aeronáuticos (UPM)
Department: Vehículos Aeroespaciales [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

Asimple semi-empirical model for the aerodynamic behavior of a low-aspect ratio pararotor in autorotation at low Reynolds numbers is presented. The paper is split into three sections: Sec. II deals with the theoretical model derivation, Sec. III deals with the wind-tunnel measurements needed for tuning the theoretical model, and Sec. IV deals with the tuning between the theoretical model and the experimental data. The study is focused on the effect of both the blade pitch angle and the blade roughness and also on the stream velocity, on the rotation velocity, and on the drag of a model. Flow pattern visualizations have also been performed. The value of the free aerodynamic parameters of the semi-empirical model that produces the best fit with the experimental results agrees with the expected ones for the blades at the test conditions. Finally, the model is able to describe the behavior of a pararotor in autorotation that rotates fixed to a shaft, validated for a range of blade pitch angles. The movement of the device is found to be governed by a reduced set of dimensionless parameters.

More information

Item ID: 39718
DC Identifier: http://oa.upm.es/39718/
OAI Identifier: oai:oa.upm.es:39718
DOI: 10.2514/1.21435
Official URL: http://arc.aiaa.org/doi/abs/10.2514/1.21435
Deposited by: Biblioteca ETSI Aeronauticos
Deposited on: 17 Mar 2016 15:05
Last Modified: 17 Mar 2016 15:05
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