Numerical simulation of pararotor dynamics: Effect of mass displacement from blade plane

Piechocki, Joaquín; Nadal Mora, Vicente y Sanz Andres, Angel Pedro (2016). Numerical simulation of pararotor dynamics: Effect of mass displacement from blade plane. "Aerospace Science and Technology", v. 55 ; pp. 400-408. ISSN 1270-9638. https://doi.org/10.1016/j.ast.2016.04.004.

Descripción

Título: Numerical simulation of pararotor dynamics: Effect of mass displacement from blade plane
Autor/es:
  • Piechocki, Joaquín
  • Nadal Mora, Vicente
  • Sanz Andres, Angel Pedro
Tipo de Documento: Artículo
Título de Revista/Publicación: Aerospace Science and Technology
Fecha: Agosto 2016
Volumen: 55
Materias:
Palabras Clave Informales: Decelerator; Numerical simulation; Rotary wing
Escuela: E.T.S. de Ingeniería Aeronáutica y del Espacio (UPM)
Departamento: Aeronaves y Vehículos Espaciales
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

The pararotor is a biology-inspired decelerator device based on the autorotation of a rotary wing, whose main purpose is to guide a load descent into a certain planetary atmosphere. This paper focuses on a practical approach to the general dynamic stability of a pararotor whose center of mass is displaced from the blade plane. The numerical simulation tool developed is based upon the motion equations of pararotor flight, utilizing a number of simplifying hypotheses that allow the most influencing factors on flight behavior to be determined. Several simulated cases are analyzed to study the effect of different parameters associated with the pararotor configuration on flight dynamics, particularly the center of mass displacement from the blade plane. It was confirmed that the ability to reach stability conditions depends mainly on a limited number of parameters associated with the pararotor configuration: the relationship between principal moments of inertia, the planform shape (associated with blade aerodynamic coefficients and blade area) and the vertical distance between the center of mass and the blade plane. As a result different types of equilibrium solutions are found and the effect of each parameter is characterized. A bifurcation in the stability shape to a precessing conical rotation, not previously found in the linear stability analysis, is predicted by this numerical model.

Más información

ID de Registro: 48087
Identificador DC: http://oa.upm.es/48087/
Identificador OAI: oai:oa.upm.es:48087
Identificador DOI: 10.1016/j.ast.2016.04.004
URL Oficial: https://www.sciencedirect.com/science/article/pii/S1270963816301328
Depositado por: Memoria Investigacion
Depositado el: 02 Feb 2018 13:15
Ultima Modificación: 02 Feb 2018 13:15
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