The Northrop Primary is a copy of the original German Zogling (Pupil) dating back to 1926.

 

 

Thousands of Primaries were built all over the world starting with the Grunau 9 by Edmund Schneider. The Zogling was copied and modified by many. In Britain Slingsby got started with a copy called the "Dagling"

 

Wingspan: 10 m

Wing area: 15 sq.m

Wing chord: 1.5 m

Length: 5.428 m

Empty weight: 86 kg

Takeoff weight: 170 kg

Aspect ratio: 6.7