Douglas DC-2 - version overview:
Civilian version:
DC-1 - prototype
DC-2 - serial version with Wright Cyclone engines
DC-2A - three or four machines with Pratt & amp; Whitney Hornet
DC-2B - two machines for Polish Airlines with Bristol Pegasus VI engines
Military versions and modifications:
XC-32 - transport aircraft, later flying command post
C-32A - 24 zabavených civilních DC-2
C-33 - transport aircraft based on XC-32
C-34 - staff transport version
C-38 - C-33 with tail surfaces DC-3
C-39 - series according to the prototype C-38, with components from DC-2 and DC-3
C-41 - staff transport machine
C-42 - staff transport version C-39
R2D-1 transport version US Navy
Foreign version:
Nakajima Ki-34
Source:
http://en.wikipedia.org/wiki/Douglas_DC-2#Variants
Civilian version:
DC-1 - prototype
DC-2 - serial version with Wright Cyclone engines
DC-2A - three or four machines with Pratt & amp; Whitney Hornet
DC-2B - two machines for Polish Airlines with Bristol Pegasus VI engines
Military versions and modifications:
XC-32 - transport aircraft, later flying command post
C-32A - 24 zabavených civilních DC-2
C-33 - transport aircraft based on XC-32
C-34 - staff transport version
C-38 - C-33 with tail surfaces DC-3
C-39 - series according to the prototype C-38, with components from DC-2 and DC-3
C-41 - staff transport machine
C-42 - staff transport version C-39
R2D-1 transport version US Navy
Foreign version:
Nakajima Ki-34
Source:
http://en.wikipedia.org/wiki/Douglas_DC-2#Variants