The Rubik R-31 Dupla (Double) was a Hungarian side-by-side seat training glider first flown in 1983. Disappointing performance and vibration problems prevented it going into production.
The Rubik R-31 Dupla (Double) was a Hungarian side-by-side seat training glider first flown in 1983. Disappointing performance and vibration problems prevented it going into production. (en)
The Rubik R-31 Dupla (Double) was a Hungarian side-by-side seat training glider first flown in 1983. Disappointing performance and vibration problems prevented it going into production. (en)