[WWI] Oeffag 153.52 (Brumowski) question

[Octávio Nuno]

Happy 2010 to everybody,

 

I am currently building Brumowski’s 153.52 Oeffag. After analyzing various
pictures of Oeffags in the “Albatros D.II & DIII Oeffag” book by Japo and
“Windsock datafile 19” I found that this particular machine (and some
others) had on the right side of the fuselage (near the motor) a small
square hole. Apparently this “inspection panel” was not covered. 

 

You can see this in the following machines:

-          153.54 – photo on top of page 25 (Japo book)

-          153.52 – photo on page 35 (Japo book)

-          153.209 – bottom photo on page 12 (windsock datafile)

 

My question is: what was this “hole” used for? Would it not create some drag
in the speed of the aircraft?

 

Best regards,

Octávio 

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