PPRuNe Forums - View Single Post - Pen Air Saab Overrun Unilaska with Injuries
Old 22nd Oct 2019, 17:00
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DaveReidUK
 
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Originally Posted by lomapaseo
It's all relative. In order to hit the fuselage above the window line a clockwise spinning prop has to come from the outboard side of the nacele and up and over the wing (not sure which way the subject event went)
The Saab's props do indeed rotate clockwise when viewed, as is the convention, from the rear.

Take the center of mass velocity vector and degrade it against drag and then add in the axial drag against the direction of the fuselage flight and you get a curvilinear result. As others have said the blade is also tumbling about it's center so if it is a long slender shape two impact points may be realized. followed by gash intersections between them.
I don't think any posters are disputing that the trajectory will be curvilinear. Just not very.
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