Small turbojet engine with the technology of "big" engines. It consists of a single-stage radial compressor, radial and axial diffuser, annular combustion chamber, and single-stage axial turbine.
It reaches up to 210 N thrust with the weight less than 2.1 kg. Engine bearings are lubricated with the mixture of fuel and 3% of oil. The engine is controlled by a digital electronic system integrated in the engine together with fuel pump and two electromagnetic valves. Starting is electrical. Spark plug is built in the jacket of the combustion chamber. Engine clamp and intake screen can be ordered as optional accessories.
TJ-20A Technical data
|Manufacturer||PBS, První brněnská strojírna Velká Bíteš, a.s|
|Diameter||121 mm||4.8 in.|
|Length overall||316 mm||12.4 in.|
|Dry||2,1 kg||4.6 lbs|
|Thrust at max RPM||210 N||47.2 lb|
|Thrust max continuous|
|Thrust at idle RPM|
|Pressure ratio||/ 1|
|Max continue EGT||deg.C||deg.F|
|Consumption at Max||650.0 ml/min||21.98 fl oz/min|
|Consumption at Idle||126.6 ml/min||4.26 fl oz/min|
|Specific fuel consumption||1,3 l/min|