Rotron Rotary Engines

Rotron RT300, RT600 & RT700 Rotary UAV Engines

The Rotron Rotary UAV Engine Line features a revolutionary single-motor design. The Wankel cycle engine is a 4-stroke rotary engine, making it smaller, more fuel efficient, more powerful and more reliable than other equivalent piston engines.

The revolutionary Rotron Rotary UAV engine is considerably smaller, lighter, and contains fewer moving parts than piston engines of equivalent power output. Every engine is fine-tuned to its optimum operating efficiency and safety levels before shipment. If your application requires a different power configuration but needs to keep the same package size, custom options are available.

All Rotron Rotary Engines Feature:

  • High power-to-weight ratio with increased efficiency
  • Compact package size allows greater fuel and payload flexibility for multi-mission capability
  • Fuel injection and ECU controlled altitude compensation fitted as standard
  • Higher endurance lifecycle
  • Available in pusher or tractor (puller) configurations, with either direct or reduction drive

Rotron Rotary UAV Engine Configurations

RT300 - Suitable for UAVs requiring 32 HP.

RT300HFE - Suitable for UAVs requiring 31 HP. For use with JP5/JP8/JET A1 heavy-fuels.

RT600LCR - Suitable for UAVs requiring 62 HP.

RT600HFE - Suitable for UAVs requiring 61 HP. For use with JP5/JP8/JET A1 heavy-fuels.

RT700 - Suitable for UAVs requiring 140 HP.

Rotron Engine Specifications

  RT300
-32hp
RT300HFE
-31hp
RT600LCR
-62hp
RT600HFE
-61hp
RT700
-140hp
Manufacturer Rotron
Engine Type Single Rotor,
Spark Ignition
Single Rotor,
Spark Ignition
Twin Rotor,
Spark Ignition
Twin Rotor,
Spark Ignition
Twin Rotor,
Spark Ignition
Fuel Type Gasoline/
AV GAS
JP5/JP8/JET A1 Gasoline/
AV GAS
JP5/JP8/JET A1 Gasoline/
AV GAS
Max Power 32hp @
7500 rpm
31hp @
7500 rpm
62hp @
7500 rpm
61hp @
7500 rpm
140 hp @
7800 rpm
Max Continuous 30hp @
6750 rpm
29hp @
6750 rpm
54hp @
6500 rpm
52hp @
6500 rpm
120hp @
6000 rpm
Max Torque 24 lbs/ft @
6500 rpm
23.2 lbs/ft @
6500 rpm
43.5 lbs/ft @
6500 rpm
42.4 lbs/ft @
6500 rpm
94 lbs/ft @
6000 rpm
Power-To-
Weight-Ratio
2.7hp/kg 2.6hp/kg 2.9hp/kg 2.9hp/kg 6.25hp/kg
Displacement 300cc 300cc 600cc 600cc 700cc
Block Weight1 26.2 lbs/11.9 kg 26.2 lbs/11.9 kg 46.7 lbs/21.2 kg 46.7 lbs/21.2 kg 51.8 lbs/23.5 kg
Starting Device2 Onboard/External, All Models
Compression Ratio 9.6:1 8.6:1 9.6:1 8.6:1 9.6:1
Cooling Liquid Cooling, All Models
Fuel Consumption
@ 5500rpm cruise
0.54 lbs/per HP/
per hour @
5500 rpm cruise
0.60 lbs/per HP/
per hour @
6750 rpm cruise
0.53 lbs/per HP/
per hour @
5500 rpm cruise
0.66 lbs/per HP/
per hour @
6000 rpm cruise
0.53 lbs/per HP/
per hour
Min/Max Ambient Temperature -32 to 50°C, All Models
Generator Included Starter Generator from 2000W TO 5000W, All Models
Other Features ECU Controlled Altitude Compensation, All Models

1. CORE BLOCK WEIGHT ONLY.
2. ONBOARD STARTER OPTIONAL.

Rotron 300
Rotron 600