Excellent explanation
Gerardo, very interesting option to achieve that effect.
If you have the opportunity to share that page where you found those drawings, I, also for work reasons, I have Corel Draw and Illustrator and in the next similary project, I will try. Really those propellers look very real !!
And I know perfectly that climate in Monterrey,
when it's cold it's very cold and when it's hot ... it's hot!
(The Canícula)
Ese dato de los dibujos, será de mucha utilidad para aquellos que seguimos buscando la mejor manera de hacer las cosas en este apasionante hobby. Un fuerte abrazo.
Saludos