Osprey "full stow" BFWS procedure is not matching the real process
By @nenenui
Remark: This is about the "full stow" and not the "fold horizontal"
While searching for some good real world images and videos of the BFWS (blade fold, wing stow) system I found a number which all suggest that the real world process looks (for some models?) different then in the virtual Osprey.
BFWS for the virtual Osprey goes (simplified) like this:
- Nacelles to 90 deg
- Fold the blades
- Rotate nacelles to 0 deg
- Rotate wing to 90 deg
All videos which I found however show that step 3 and step 4 basically happen at the same time … which is at least 12 seconds faster … and looks really cool IMHO. So:
- Nacelles to 90 deg
- Fold the blades
- Rotate nacelles to 0 deg … while wing rotates to ca. 45 deg
- Rotate wing rotates further to 90 deg
One picture which shows the "mid phase" positions would be this:

The videos are here:
- https://www.youtube.com/watch?v=TPRhdjSFWgU
- Full stow process
- interesting … the leftmost flap is always a 0 deg … while the three others start at 90 deg
- https://www.youtube.com/watch?v=_45aUrES-j0
- Full stow process
- https://www.youtube.com/watch?v=rNfJ7mR8MAs
- Multiple full unstow … and some "unfold horizontal" too
- https://www.youtube.com/watch?v=Hs8HCPaJzvc
- one can only see the very last phase of the full unstow stage