The 1929 Rhon soaring-flight contest Page: 8 of 25
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N.A.C.A. Technical Miemorandum No. 560
made eccentric, so as to relieve the compression flange of the
inner portion. *It is a V strut, the same as on the "Professor."
The fuselage had an oval cross section and showed, in.the
side view, the downward-slanted nose, which 'had proved so sat-
isfactory on the "Professor." The manner of mounting the tail
surfaces/the same as on the original type. An interesting fea-
ture of this glider was the use of a differential aileron con-
trol, which greatly improved.its flying qualities, a circum--
stance which doubtless had much to do with its excellent per-
formances. Further details are given in the table at the end.
In the opinion of most-of the experts, the improved per-
formance glider "Kakadu" (Cocekatoo) of the Munich group was the
best glider in the contest.' The only change in the wings was
in the ailerons, which included the wing tips as balancing sur-
faces. The fuselage, however, was entirely reconstructed.
The new fuselage-is loner and has a smaller cross section. The
latter was almost too small, so that the pilot's head project-
ed above the wing. The glider was flewn by the Munich pilot
Krebs and this time' fully met expectations. Unfortunately, the
wing bent considerably in normal flight; so that it could not
be flown in very gusty weather. Figure 5 shows the "Kakadu"
just after the take-off. The ring -6eighed 6.9 kg/m2 (1.41 lb./
sq.ft.), while the wing of the "Wien" weighed only 4.5 kg/m2
W. Hirth had a new glider, "the' "Lore," from Laubenthal,
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Lippisch, Alexander. The 1929 Rhon soaring-flight contest, report, April 1930; (digital.library.unt.edu/ark:/67531/metadc277555/m1/8/: accessed January 20, 2019), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.