MD550 Piston Engine

The MD550 engine is a model aircraft/drone engine。
Four cylinder, horizontally opposed, air cooled, two cycle engine, with solid state magneto or battery ignition, mixture lubrication. Suitable for pusher and tractor installations.

MD550 Piston Engine Indicator Parameters

Performance	37 kW (50 HP) at 7500 rpm
Bore	66 mm / 2.60 inch
Stroke	40 mm / 1.57 inch
Displacement	548 cm3/ 33.44 cub. inches
Crankcase	Aluminum casting
Pistons	Cam ground, casted aluminum alloy
Cylinders	Casted aluminum alloy, with Ceramic coating
Ignition system	Solid state magneto ignition
Firing Order	Both cylinders simultaneously
Carburetors	4 diaphragm all position carburetors, without choke
Starter	12 V, 0.3 kW
Generator	28 V, 1200 W
Dry weight approx	16 kg with magneto ignition
Fuel	AVGAS 100LL or 90 RON mixed
Shielded ignition system, Long and short crankshafts, Exhaust stacks

MD550 Piston Engine Application Scenario



MD550 Piston Engine Dimensions


MD550 Piston Engine PowerTorqueSFC Curves


MD550 Piston Engine NEWS


Shahed 136's MD550 piston engine
The Shahed 136 drone, which weighs more than 200 kg, uses the MD550 piston engine. The output power of this four cylinder horizontally opposed air-cooled two-stroke engine has reached 50 horsepower, and its deadweight is only 16 kg. The larger and heavier witness - 136 naturally needs a stronger engine. At the same time, the piston engine can also ensure lower fuel consumption, so as to achieve a huge range of 2500 kilometers.

According to professional observation, Shahed 136's MD550 piston engine is a counterfeit