PR-5 Wiewior plus

SKNL PRz PR-5 "Wiewiór" plus is a Polish unmanned aerial vehicle (UAV) being developed by students of Rzeszów University of Technology (, SKNL PRz), beginning in January 2006. Fifth of the series, following PR-1 "Szpion", PR-2 "Gacek", PR-3, PR-4 (SAE lifter) and PR-5 "Wiewiór", it is an experimental reconnaissance aircraft. It has carbon fiber and kevlar monocoque structure with aluminium ferrules. Power plants are two electric brushless three-phase motors.
Rescue System.
Different types of parachutes used in PR-5 Wiewiór plus allow to control descent velocity depending on airplane weight and expected windspeed. Two basic types: ring and cruciform parachutes in various sizes are available; all use pilot chute pull-out deployment.