REPUBLIC OF SERBIA

MINISTRY OF DEFENCE

www.mod.gov.rs

MINISTRY OF DEFENCE

Material Resources Sector

Defensive Technologies Department

Military Technical Institute

www.vti.mod.gov.rs

TACTICAL uav with in flight adjustable propeller, COMPUTER PROGRAM WHITE EAGLE 2

KOSTA VELIMIROVIĆ

Military Technical Institute, Belgrade

NEMANJA VELIMIROVIĆ

Faculty of Mechanical Engineering, Belgrade

Abstract: The metod for estimation piston-engine, long range, UAV PEGASUS (with in flight adjustable propeller) performances is presented in this paper. Total energy model programme (WHITE EAGLE 2) is basis for performance calculation. Insted of  fixed pitch propeller, using in flight adjustable propeller, significantly improves take-off, climb, range, endurance and lowers noise. Method and its results are ilustrated by numerical example.

Key words: Tactical Unmanned Aerial Vehicles, long range, propeller, piston-engine, performances, fixed pitch propeller, in flight adjustable propeller.