Glider with retractable propeller - GIF

Glider with retractable propeller.

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Previously:

https://www.homemadetools.net/forum/...168#post145644
https://www.homemadetools.net/forum/...962#post168026
https://www.homemadetools.net/forum/...136#post145451
https://www.homemadetools.net/forum/...079#post141127
https://www.homemadetools.net/forum/...790#post133254
https://www.homemadetools.net/forum/...2518#post96512

Is it just me or does that suitcase below look dangerously close to the spinning prop?

It's a test, the HP is determined by how far it tosses the briefcase.

I don't know if I would trust the springs to hold and fold those in flight, air pressure might force them apart.