\begin{tikzpicture}[3d view={120}{15}] \newcommand\radius{15mm} \newcommand\height{3cm} \begin{scope}[canvas is yx plane at z=.8] \foreach \i in {1,2,3,...,8} { \fill[lightgray, opacity=.5] (0,0) -- ({\i*360/8}:{.9*\radius}) arc ({\i*360/8}:{(\i+.5)*360/8}:{.9*\radius}) -- cycle; }; \fill[lightgray, opacity=.5] (0,0) circle (3mm); \draw[black, <-] (-1, 1) to[out=180, in=0] ++(-.5,1.2) node[left, anchor = east] {Propeller}; \end{scope} \begin{scope}[canvas is yx plane at z=-2] \draw[black, <-] (-1, .5) to[out=180, in=0] ++(.1,1.5) node[left, anchor = east] {Flap}; \end{scope} \begin{scope}[canvas is xz plane at y=0, thick] % flap along y back \fill[lightgray!30, draw=lightgray] ({-.3*\radius}, -2) rectangle ({-.8*\radius}, -2.5); % drag force of flap along y back \draw[-latex, blue!80!black] ({-.55*\radius}, -2) -- ++(0,-6mm); \end{scope} % FIXME: why can't is use -.55\radius?? \begin{scope}[canvas is yz plane at x=-.825, thick] % lift force of flap along y back \draw[-latex, green!50!black] (0, -2) -- ++(5mm,0); \end{scope} \begin{scope}[canvas is yz plane at x=0, thick] % flap along x front \fill[lightgray!30, draw=lightgray] ({.3*\radius}, -2) rectangle ({.8*\radius}, -2.5); % drag force of flap along x front \draw[-latex, blue!80!black] ({.55*\radius}, -2) -- ++(0,-6mm) node[right] {$\vec{F}_{d,i}$}; % flap along x back \fill[lightgray!30, draw=lightgray] ({-.3*\radius}, -2) rectangle ({-.8*\radius}, -2.5); % drag force of flap along x back \draw[-latex, blue!80!black] ({-.55*\radius}, -2) -- ++(0,-6mm); \end{scope} % FIXME: why can't is use .55\radius?? \begin{scope}[canvas is xz plane at y=-.825, thick] % lift force of flap along x back \draw[-latex, green!50!black] (0, -2) -- ++(5mm,0); \end{scope} % FIXME: why can't is use .55\radius?? \begin{scope}[canvas is xz plane at y=.825, thick] % lift force of flap along x front \draw[-latex, green!50!black] (0, -2) -- ++(5mm,0); % flap angle for front x \fill[violet] (0,-2) circle (.5mm); \node[violet, right, yshift=1mm] at (0,-2) {$\alpha_1$}; \end{scope} \begin{scope}[canvas is xz plane at y=0, thick] % flap along y front \fill[lightgray!30, draw=lightgray] ({.3*\radius}, -2) rectangle ({.8*\radius}, -2.5); % drag force of flap along y front \draw[-latex, blue!80!black] ({.55*\radius}, -2) -- ++(0,-6mm); \end{scope} \begin{scope}[canvas is xy plane at z=0, thick] \draw[lightgray, dashed] (0,0) circle (\radius); \end{scope} \begin{scope}[canvas is xy plane at z=-2, thick] % lower circle \draw[gray] (0,0) circle (\radius); \draw[lightgray, densely dotted] (-\radius, 0) -- (\radius, 0); \draw[lightgray, densely dotted] (0, -\radius) -- (0, \radius); \end{scope} \begin{scope}[canvas is xy plane at z=1, thick] % upper circle \draw[gray] (0,0) circle (\radius); \draw[lightgray, densely dotted] (-\radius, 0) -- (\radius, 0); \draw[lightgray, densely dotted] (0, -\radius) -- (0, \radius); \end{scope} % FIXME: why can't is use .55\radius?? \begin{scope}[canvas is yz plane at x=.825, thick] % lift force of flap along y front \draw[-latex, green!50!black] (0, -2) -- ++(5mm,0) node[pos=1, below, yshift=-1mm] {$\vec{F}_{\ell,i}$}; \end{scope} \begin{scope}[canvas is yz plane at x=-.825, thick] % flap angle for back y \fill[violet] (0,-2) circle (.5mm); \node[violet, xshift=2.5mm, yshift=1.5mm] at (0,-2) {$\alpha_4$}; \end{scope} \begin{scope}[canvas is xz plane at y=-.825, thick] % flap angle for back x \fill[violet] (0,-2) circle (.5mm); \node[violet, xshift=2.5mm, yshift=1.5mm] at (0,-2) {$\alpha_3$}; \end{scope} \begin{scope}[canvas is yz plane at x=.825, thick] % lift force of flap along y front \fill[violet] (0,-2) circle (.5mm); \node[violet, xshift=2mm, yshift=1.5mm] at (0,-2) {$\alpha_2$}; \end{scope} \begin{scope}[thick] % cylinder border \draw[gray] (xyz cylindrical cs:z=-2,radius=1.5,angle=-60) -- ++ (xyz cylindrical cs:z=3); \draw[gray] (xyz cylindrical cs:z=-2,radius=1.5,angle=120) -- ++ (xyz cylindrical cs:z=3); % central axis \draw[lightgray, dashdotted] (xyz cylindrical cs:z=-2) -- (xyz cylindrical cs:z=2); % outer line for radius measurement \coordinate (TO) at (xyz cylindrical cs:z=1); \coordinate (TR) at (xyz cylindrical cs:z=1,radius=1.5,angle=120); \draw[red!60!black, <->] (TO) -- node[midway, above] {$a$} (TR); \end{scope} \begin{scope}[canvas is yz plane at x=0, thick] % top line for center of mass measurement \draw[lightgray, densely dotted] (0, 0) -- (2.5, 0); % bottom line for center of mass measurement \draw[lightgray, densely dotted] (\radius, -2) -- (2.5, -2); % Center of mass height measurement \draw[red!60!black, <->] (2.5,0) -- node[midway, right] {$d$} (2.5, -2); % thrust force \draw[blue!80!black, -latex] (0,1) -- node[near end, right] {$\vec{F}_{T}$} (0,2); \end{scope} \begin{scope}[canvas is xy plane at z=1.25, thick] % propeller angular velocity \draw[violet, ->] (290:.2) arc[start angle=290, end angle=-30, radius=.2] node[pos=0, left] {$\omega$}; \end{scope} \begin{scope}[canvas is xz plane at y=0, thick] % line to pitch angle \draw[lightgray, densely dotted] (0, 0) -- (3, 0); \end{scope} \begin{scope}[canvas is xz plane at y=1.85, thick] % roll angle \draw[violet, ->] (-40:.2) arc[start angle=-40, end angle=-370, radius=.2] node[midway, right] {$\phi$}; \end{scope} \begin{scope}[canvas is yz plane at x=2.5, thick] % pitch angle \draw[violet, ->] (40:.2) arc[start angle=40, end angle=370, radius=.2] node[midway, above left] {$\vartheta$}; \end{scope} \begin{scope}[canvas is xy plane at z=-1.25, thick] % yaw angle \draw[violet, ->] (290:.2) arc[start angle=290, end angle=-30, radius=.2] node[midway, right] {$\psi$}; \end{scope} \begin{scope}[thick] % body coordinate system \coordinate(BO) at (0,0,0); \draw[-latex] (BO) -- (xyz cylindrical cs:radius=.5) node[left] {$\uvec{y}$}; \draw[-latex] (BO) -- (xyz cylindrical cs:radius=.5,angle=90) node[right] {$\uvec{x}$}; \draw[-latex] (BO) -- (xyz cylindrical cs:z=-.5) node[below] {$\uvec{z}$}; % intertial coordinate system \coordinate (IO) at (xyz cylindrical cs:radius=3.5,angle=-70,z=-1.5); \draw[-latex] (IO) -- ++ (xyz cylindrical cs:radius=.5) node[left] {$\uvec{\jmath}$}; \draw[-latex] (IO) -- ++ (xyz cylindrical cs:radius=.5,angle=90) node[right] {$\uvec{\imath}$}; \draw[-latex] (IO) -- ++ (xyz cylindrical cs:z=-.5) node[below] {$\uvec{k}$}; \end{scope} \end{tikzpicture}