Nele VII wrote:

Interestingly, Germans didn't bother to make such a diagram for Bf-109E-3! I
have the manual for Bf-109E-3 (Yugoslav export version) and it reads only
four figures for turning circle:

Smallest circle radiuses:

(with flaps up)
At altitude 0 m-170 meters (0ft-557ft)
At altitude 6,000m-320meters (19,700ft-1,050ft)

snip

If I'm doing this correctly (brain's a bit fuzzy at the moment) taking the ratio
of 12/19.7, multiplying it by (1,050-557) and adding 557, I get 857.3+ feet,
close enough to the British value of 885 feet for government work. I wonder if
the Brits and Germans were using the same standard atmosphere for their calcs?

Guy