AerialTorpedoDude69
Airman 1st Class
- 150
- Mar 1, 2022
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Outstanding, thanks for your insight!A-26
View attachment 769712
Better photo of the lower left
View attachment 769713
To be double slotted you need two slots for the air to go through.
Even if they use a two piece flap with a hinge, it is not double slotted unless there is enough airflow through the hinge/gap to affect the air flow on the upper surface of flap assembley.
Lockheed 10 and 12 used split flaps. The 14 used Fowler flaps.
MiTasol brilliant work, thank you so much for your insight!
It's pretty clear now, thanks to what you've provided, that the George's flaps combine a Fowler with a split. I don't know what this arrangement is called but the function is clear:
The extra wing area and camber from the Fowler and camber/lift from the split flap probably gave the George extraordinary low-speed handling for its size and weight. It appears that this system was unique to the N1K1/2 because the Ki-43 doesn't appear to have this feature, althoughWild_Bill_Kelso would know for certain. This image strongly suggests that the Ki-43's Butterfly flaps were a variation on the Fowler and had the potential for high camber/lift.
In comparison, the N1K1/2's flap system was more complicated but also capable of generating higher lift at the expense of higher drag of the split flap were popped.
I've never been able to determine if these were truly 'automatic' flaps (as is sometimes claimed) in that they deployed at a certain bank angle or something, or if they were manually triggered by a lever in the cockpit.