Flight dynamics model for preliminary design of PrandtlPlane wing configuration with sizing of the control surfaces

Fabrizio Oliviero, Davide Zanetti, Vittorio Cipolla

Abstract


This paper deals with the evaluation of the flight dynamics response of aircraft with a PrandtlPlane configuration by means of simple models to be used during the preliminary design. The study is completed by a method for an initial sizing of the elevators and the ailerons (positioned on both the front and the rear wing) in order to achieve adequate handling qualities. The flight dynamics model considers the rigid aircraft, the steady aerodynamics, and separating the longitudinal and the lateral-directional motions. The force derivatives are extrapolated through a VLM solver whose the reliability of the results has been proven. The methods have been applied on the IDINTOS aircraft with the conclusion that we obtain a proper longitudinal dynamic response with a reduced Margin of Stability because of the very high values of the aerodynamic damping Mq and the pitch stiffness Malpha.

Keywords


Flight Dynamics; PrandtlPlane; Box Wing; Preliminary design; mobile surfaces

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References


Ludwig Prandtl. Induced drag of multiplanes. Technical report, Naca, 1924.

Luciano Demasi, Giovanni Monegato, Emanuele Rizzo, Rauno Cavallaro, and Antonio Dipace. Minimum induced drag theorems for joined wings, closed systems, and generic biwings: Results. In 56th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, AIAA SciTech, 2015.

Carlo Casarosa. Meccanica del volo. 2004.

R. P. Harper and G. E. Cooper. Handling qualities and pilot evaluation. Journal of Guidance, Control, and Dynamics, 1986.

V.A. Mil-f-8785c: Flying qualities of piloted airplanes. Technical report, USA Military Specification, 1991.

Rauno Cavallaro. A code for surface modeling and grid generation coupled to a panel method for aerodynamic configuration design. Master’s thesis, University of Pisa, 2009.

M. Drela and H. Youngren. Avl 3.30 user primer. Technical report, 2010.

Vittorio Cipolla. Utilizzo di codici a pannelli nel progetto preliminare di velivoli prandtlplane ultraleggeri; applicazione a nuove configurazioni. Master’s thesis, UNiversity of Pisa, 2006.

Vittorio Cipolla, Aldo Frediani, Giuseppe Gibertini, and Fabrizio Oliviero. A ultralight amphibious prandtlplane: wind tunnel tests. In Atti XXII Congresso AIDAA, 2013.

Aldo Frediani, Vittorio Cipolla, and Fabrizio Oliviero. Design of a prototype of light amphibious prandtplane. In Proceedings Scitech-AIAA 2015 Conference, Orlando, USA, January 2015, 2015.

Louis V. Schmidt. Introduction to aircraft flight dynamics. 1998.




DOI: http://dx.doi.org/10.19249/ams.v95i4.289

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