of pages 48 - 53 from Baubeschreibung
für das Flugzeugmuster Messerschmitt Me 109 mit DB 601,
from circa 1939. The date cannot be
positively identified, however, the Yugoslavian
translation of the manual, probably shipped along with the Yugoslavian export Bf 109Es,
and which is otherwise identical to the German, is dated 1940.
deal with the official specification for the Bf 109E-3 model, and note
the maximum speed of 500 km/h at Sea Level, and 570 km/h at 5000m, with
+/- 5% tolerenace on top speed. These
figures are in close agreement with German, Swiss and French test results of Bf
109E-1 and E-3.
These are, at Sea Level and at 6000 m, with and without deploying flaps
to aid turning :
Without use of
at 0 m altitude - 170 m (557 feet), at 6000 m (19 685 feet)
altitude - 320 m (1050
of flaps :
at 0 m altitude - 125 m (410 feet), at 6000 m (19 685 feet)
altitude - 230 m (754
The report also gives figures for climb times and distances required
take off and landing runs.
Similiar figures are given by a calculation by Messerschmitt AG on Bf
109E turn times and radius in an internal Messerschmitt report.
The calculation was based on a similiar set of data, but assumes the
slightlly lower power output of the DB 601A-1 at 990 PS. Conditions in
the calculation were 2540 kg weight, 990 PS output, an altitude of 0 m
and no height loss. Under these conditions, the turning characteristics
of the Bf 109E were as follows :
Turn time for 360 degrees: 18,92 seconds.
Turn radius for above turn: 203 m
Take note that the smallest
turning radius and the best turning time do not occur at the same
airspeed, which would
Further calculations were made for a diving turn of a descent rate of
-50 m/sec, which would be equivalent translate to an overall power
Turn time for 360 degrees in a -50m/sec diving turn : 11,5 seconds.
Turn radius for the -50m/sec diving turn above : 190 m