Sojka III
Encyclopedia
Sojka III is an unmanned aerial vehicle
(UAV) operated by the Czech Army.
, radio reconnaissance, artillery fire observation, electronic warfare
, or to launch infrared targets for air defence training.
A Sojka unit usually consists of three or four Sojka UAVs, a transport truck, launch truck, control and monitoring vehicle, and an off-road vehicle
for transport of the landed UAV.
speed. Wind limits are 12 m/s against the wind or 3 m/s in a side wind. A wind speed of lower than 8 km/h is required to get a good optical environment.
The operator can choose between two modes:
Landing can be done using a parachute or via operator control.
Unmanned aerial vehicle
An unmanned aerial vehicle , also known as a unmanned aircraft system , remotely piloted aircraft or unmanned aircraft, is a machine which functions either by the remote control of a navigator or pilot or autonomously, that is, as a self-directing entity...
(UAV) operated by the Czech Army.
Usage
The mission of Sojka ("jaybird") is to provide aerial reconnaissanceAerial reconnaissance
Aerial reconnaissance is reconnaissance that is conducted using unmanned aerial vehicles or reconnaissance aircraft. Their roles are to collect imagery intelligence, signals intelligence and measurement and signature intelligence...
, radio reconnaissance, artillery fire observation, electronic warfare
Electronic warfare
Electronic warfare refers to any action involving the use of the electromagnetic spectrum or directed energy to control the spectrum, attack an enemy, or impede enemy assaults via the spectrum. The purpose of electronic warfare is to deny the opponent the advantage of, and ensure friendly...
, or to launch infrared targets for air defence training.
A Sojka unit usually consists of three or four Sojka UAVs, a transport truck, launch truck, control and monitoring vehicle, and an off-road vehicle
Off-road vehicle
An off-road vehicle is considered to be any type of vehicle which is capable of driving on and off paved or gravel surface. It is generally characterized by having large tires with deep, open treads, a flexible suspension, or even caterpillar tracks...
for transport of the landed UAV.
Flight
The Sojka is launched from a ramp using a rocket-assisted device to get takeoffTakeoff
Takeoff is the phase of flight in which an aerospace vehicle goes from the ground to flying in the air.For horizontal takeoff aircraft this usually involves starting with a transition from moving along the ground on a runway. For balloons, helicopters and some specialized fixed-wing aircraft , no...
speed. Wind limits are 12 m/s against the wind or 3 m/s in a side wind. A wind speed of lower than 8 km/h is required to get a good optical environment.
The operator can choose between two modes:
- Semiautomatic – the operator can change the altitude and direction of the UAV
- Automatic – the operator can specify up to eight turning points. The operator can switch to semiautomatic mode or order plane to return to the starting point at any time.
Landing can be done using a parachute or via operator control.