The SZD Zefir series gliders of the 1960s also had Fowler flapped wings. Zefirs had been piloted to 2. and 3. (Cologne 1960), 1. and 2. (Junin 1962) places at World Championships, with L/D of Zefir-3 (1965) exceeding 43. Also LET L-13 Blaník used Fowler flaps, however the latter was not intended to be a high performance glider. (Development of "Zefir" glidersArchived 24 September 2015 at the Wayback Machine; Lecture by Jerzy Śmielkiewicz (co-designer). Polish Aviation Technology, Historical Notes, issue 26, Sep 2006)
The SZD Zefir series gliders of the 1960s also had Fowler flapped wings. Zefirs had been piloted to 2. and 3. (Cologne 1960), 1. and 2. (Junin 1962) places at World Championships, with L/D of Zefir-3 (1965) exceeding 43. Also LET L-13 Blaník used Fowler flaps, however the latter was not intended to be a high performance glider. (Development of "Zefir" glidersArchived 24 September 2015 at the Wayback Machine; Lecture by Jerzy Śmielkiewicz (co-designer). Polish Aviation Technology, Historical Notes, issue 26, Sep 2006)
