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 (Studenckie Koło Naukowe Lotników, Politechnika Rzeszowska, 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.

General characteristics

 * Length: 1.4 m
 * Wingspan: 2.14 m
 * Height: 0.3 m
 * Wing area: 0.53 m²
 * Empty: 2.5 kg
 * Maximum takeoff: 5.5 kg
 * Powerplant: 2x AXI 2820/14
 * Airfoil: CLARK Y15
 * Endurance: ~50 min