Drone frame orientation of the ST mini drone STEVAL-Drone02

[YCC]

Hi,

 

As mentioned in the other post that the drone frame is not symmetrical, where the propeller guards have fins with certain inclination and orientation (see [1]).

 

I have difficultly to find the correct orientation of the drone02 frame. Since I am not quite sure how the propeller guards fins can affect the downward thrust that produces by the propellers. It would be great if someone can provide suggestion. 

 

I enclosed two cases of the drone frame orientations as reference.

 

NOTE: If I use Figure8 in [2] as reference, then Case1 does look correct. But taking the M2 propeller (top right of the propeller) as an example, the M2 propeller rotates counter-clockwise (CCW) direction, then I think the produced thrust will hit the guard fins and get affected?

 

Case 1	Case 2
Case 1: top right (for M2 motor/propeller)	Case 2: top right (for M2 motor/propeller)

 

Ref:

[1] Steval-FCU001V2 FCU board and Steval-drone02 Drone kit issues

[2] ST, How to build your own mini drone with the STEVAL-Drone02 and STEVAL-FCU001v2 , UM3117.