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 (Polish: 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.