Optimization procedure to obtain a 3D printed energy efficient hovering cycloidal rotor aircraft

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# louisgag/cyclogyroOptimization

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# cyclogyroOptimization

Optimization procedure to obtain a 3D printed energy efficient hovering cycloidal rotor aircraft

Note: if the jupyter notebook file doe not show properly in GitHub, try reloading it.

The equations and results coming from this optimization can be seen in the (currently accepted by the Journal of Applied and Computational Mechanics) following paper: Parametric optimization of a cyclogiro aircraft design for efficient hover with aeroelastic considerations by Louis Gagnon, Marco Morandini, and Stéphane Fournier. The AEAT and AIAA papers that are mentioned in the code and in the paper can be downloaded here: http://louisgagnon.com/publications.html

This SageMath (9.12) code will automatically generate the C++ equations that can be ran with the Dakota (6.13) optimization toolkit using the cycloidalEfficiency.in input file to find the optimal parameters for best hover energy effiicency.

To generate the C++ code use the following initial parameters:

optimRun = bool(1) # true to run an optimization equation generating process (ie skip numerical setting of values)
getCPP = bool(1) # c++ generator
postRun = bool(0) # run as post dakota run thus using the soln values from the dakota result

compile the generated code using, for example: touch test.h; g++ -Wall -O2 -o cycloidalEfficiency cycloidalEfficiency.cpp and run it with dakota using: dakota -i cycloidalEfficiency.in -o cycloidalEfficiency.out > cycloidalEfficiency.stdout

To obtain the general drone performance indicators (efficiency, deformation, stresses, ...) from a set of parameters (e.g.: the obtained optimum from Dakota) use the following initial parameters:

optimRun = bool(0) # true to run an optimization equation generating process (ie skip numerical setting of values)
getCPP = bool(0) # c++ generator
postRun = bool(1) # run as post dakota run thus using the soln values from the dakota result

and properly set the parameters in the if (postRun): # Final values for JACM article cell.

The code was developped with funding of the Polimi International Fellowship research grant Index no. 1378 - Ref. No. 15881 made available for the An aeroelastic study of cycloidal rotors used in various configurations project which covered the vast majority of the work presented here.

Small revisions to the code were made possible through the support of the Alexander von Humboldt Foundation for the A Novel and Simple Aircraft Requiring Minimal Power to Hover project.

Optimization procedure to obtain a 3D printed energy efficient hovering cycloidal rotor aircraft

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