I've used the photo from
http://www.luftarchiv.de/flugzeuge/henschel/hs132.htm, to try to outline
the fuselage frames (although of smaller size, quality is slightly better) and to my opinion, the greates
width is below the centerline of the fuselage, so it can't be of circular cross section. The shape of the
visible frames match the shape of canopy frame. But Stargazer is right, for a precise determination, other
sources would be necessary.
lippischh said:
... why most prints shows it with a roud one?
This may have been a result of the retouched photo, I think. And probably most drawings of the Hs 132
aren't based on a complete analysis of the very few photos, but just on other drawings, so this error was
copied again and again. With other points it may be the same ...
AFAIK there should have been several different versions, but they would have been differing with regards to
type of the engine, span or armamnet only.