I am nowadays coming across air frames, which host motors "at an angle" to the normal (i.e. 90 degress to earth's frame of reference).
In my understanding, this allows the vertical force vector from the rotors to be angled differently contrary to the state of the art normal motor mountings on air frames which give thrust directly in the vertical takeoff direciton. The force of gravity is now counteracted by an angled force vector which may improve in performance of flight as less effort is taken vertically for hovering and takeoff.
Is my reasoning correct or any other reasons why this design is considered?