SZD 56 Diana
|Type designation||SZD-56 Diana|
|Competition Class||15 Meter|
|Wing area||8.64 m²|
|Empty mass||ca. 182 kg|
|Water ballast||240 kg|
|Maximum mass||500 kg|
|Wing loading||ca. 28 – 58 kg/m²|
|Maximum speed||270 km/h|
|Stall speed||60 km/h|
|Minimum sink rate||ca. 0.45 m/s|
|Best glide ratio||approx. 50:1|
The SZD-56 Diana is a 15 metre class glider originally designed by Bogumil Beres at PZL-Bielsko. However PZL Bielsko went bankrupt before it could be put into production. The rights to the design were taken over by a new entity, Diana Sailplanes, which developed the design further and called it the Diana 2. This glider first flew on 12 January 2005.
The Diana 2 features a number of structural innovations, including a spar-less wing. It also has an unusual side-stick control system to accommodate the pilot in its unusually narrow cockpit. It has the highest maximum wing loading of any 15 metre competition sailplane.