Hi!
Does anyone have any information on the subject?
I read that the design was heavily influenced by the DC-2, which has NACA 2215/NACA 2209 (root/tip).
I found a picture showing the AT-2 airfoil, but I'm not sure if it's the same as the DC-2.
Japanese local Wikipedia tells that the Nakajima AT-2's inner wing was same as DC-2 but outer wing adopted Northrop 2E's to avoid lawsuit with Douglas. No more details are available at the moment.
One of the sources on the Wiki site is Wilson (Aerospace Publications-1999) and reproduced here. Certainly a much smaller aircraft compared to the DC-2.
Thanks a lot Aeroweanie! Yes, it is probably indeed NACA 2215. I found another picture which is part of a newspaper article about the Nakajima factory in 1940. It shows the assembly of the AT-2s. You can also see a wing profile in the bottom centre of this one, though not in very good quality. It also looks like a NACA 2215.
Taking Shinpachi's information into account, the wingtip on the AT-2 may have been NACA 2409, the same as on the Northrop Gamma 2E.
By the way, a book about AT-2 was published in Japan, which is now very rare to find even in antiquarian bookshops and archives. I would be very curious to read it...
By the way, a book about AT-2 was published in Japan, which is now very rare to find even in antiquarian bookshops and archives. I would be very curious to read it...