Research in 1940 by DVL's K.A. Kawalki lead to subsonic profiles very similar to the supercrtical profiles, therefore the objection in the year 1984 against the US-patent specification for the supercritical airfoil.
Therefore objection in the year 1984 against the US-patent specification for the supercritical airfoil. Research in 1940 by DVL's K.A. Kawalki, leading to subsonic profils very similar to the supercrtical profils.
Research in 1940 by DVL's K.A. Kawalki, leading to subsonic profils very similar to the supercrtical profils. Therefore objection in the year 1984 against the US-patent specification for the supercritical airfoil.
Research in 1940 by DVL's K.A. Kawalki, leading to subsonic profils very similar to the supercrtical profils. Therefore objection in the year 1984 against the US-patent specification for the supercritical airfoil.