Answer
See image
Work Step by Step
Parametric equations: $\left\{\begin{array}{l}
x=t\\
y=\sin t\\
z=2\cos t
\end{array}\right.$
In the xy plane, (z=0)
The projection is is $y=\sin x$, a sine curve.
In the yz plane, (x=0)
The projection is $y^{2}+\displaystyle \frac{z^{2}}{4}=1$, an ellipse.
In the xz plane, (y=0)
The projection is is $z=2\cos x$, a cosine curve with amplitude 2.
This leads us to an elliptic cylinder along x, which has
an elliptical helix that spirals along it.
