The VRABAC is a high-wing monoplane made of composite materials. Its fuselage is aerodynamically shaped around the equipment. The nose part contains an 800W DC motor powered by a Li-pol battery while the space below and behind it is intended for electro-optical equipment. The airborne computer is in the central part. The UAV is hand launched and lands with a parachute and an airbag. It is designed to survey and analyze major infrastructural facilities such as pipelines, major roads, bridges, forests, etc.
In 2022, an armed version was revealed that can be equipped with six 40 mm M22 munitions.[2]
Vrabac weighs 5.3 kg with a 2.80 meters wing span. It can carry a payload of maximum of 1.5 kg. It has a total of 1 hour flying time and has a maximum flight speed of 85 km/h. The operational range of the Vrabac is >10 km, and its operating height is 300 to 500 meters.[3]
| Engine: | DC electric, 800 W | |
| Propeller: | Two blades, graphite composite | |
| Battery: | Li-Po 28V, 8000 mAh | |
| Wing span: | 2.806 m | |
| Wing area: | 0.75 m2 | |
| Length: | 1.94 m | |
| Weight (without payload): | 7.5 kg | |
| Maximum payload weight: | <1.5 kg | |
| Max takeoff weight: | 9 kg | |
| Max speed: | 120 km/h | |
| Cruising speed: | 61 km/h | |
| Operational altitude (AGL): | 300–500 m | |
| Flight duration: | 1 h | |
| Launching: | Automatic, hand launch | |
| Landing: | Automatic, parachute and airbag. Optional: belly landing | |
| Uplink: | UHF, frequency-hopping spread spectrum | |
| Downlink: | S-band, digital, coded | |
| Guiding: | Fully autonomous way points tracking, holding, camera guiding, Emergency and return home mode |