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My question is to what exactly 縦に半回転する means.

For examples sake lets imagine a plane flying in the sky, and how I think its
orientation would change.

We will start of with the example that the plane is flying parallel to the
ground and maintaining the same height. If it was to 縦に半回転する then it would be
flying upside down (180 degree rotation), I think.

Now what if instead maintaining the same height, it was moving upwards at a 45
degree angle from vertically up. If this was to 縦に半回転する would it now be going
downwards at a 45 degree angle from vertically down, or would it be going in
the opposite direction (horizontally) compared to before?
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2020-08-23T12:34:57.557
80289
2020-08-23T17:02:48.440
2020-08-23T13:12:06.327
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question
meaning
What does 縦に半回転する mean
You can basically think of 縦回転 as "vertical rotation". In the case of
aircraft, I think 縦回転 would usually refer to the **pitching** motion.

[![Yaw, Pitch,
Roll](https://i.stack.imgur.com/YgkEl.png)](https://i.stack.imgur.com/YgkEl.png)

(From Wikipedia: [Aircraft principal
axes](https://en.wikipedia.org/wiki/Aircraft_principal_axes#Transverse_axis_\(pitch\)))

So yes, 縦に180度回転する would make the aircraft upside-down. (But 横180度回転 (180°
roll) would also make it upside-down. Yawing is technically also 回転, but it's
usually called 向きを変える in laypeople's terms.)
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2020-08-23T17:02:48.440
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2020-08-23T17:02:48.440
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answer