Hello everyone.

The new Merlin 200 XBL has just been announced.

http://www.ultimate-jets.net/collect...merlin-m200xbl

This engine features several impressive technical data, including:

Best power-to-weight ratio on the market.
Third best price-to-thrust-to-weight ratio on the market and best value of all engines in the 160 to 300 N including Chinese products.

Have a look here:

Choosing-the-right-engine-for-your-application

The engine is based on the venerable Merlin 160 concept that has been completely re-designed from the ground up using CAD design tools and a thermodynamics optimization program custom written by Gaspar himself. Obviously, Gaspar's 20 year experience in engine designing clearly shows here.

This turbine also features the new XBL concept: it is 100% digital, from the sensors to the control unit and starter motor as well as fuel pump ( brushless ).

This means the following for the starter motor:

• A much higher starting torque giving a more position clutch engagement and less clutch and o'ring wear.

• A punchier starting thanks to the motor torque.

• A more positive starter motor disengagement.

• A more clever piloting of the starting cycle.

And for the fuel pump, the following benefits are achieved:

• Very precise control of the fuel metering since the ECU can pilot the pump pole by pole and control resolution is 1 RPM! Fuel metering s now to the milliliter!
• Very fast change in the fuel flow output. The fuel flow is monitored 100 times per minute and precisely altered as soon as change in the combustion cycle is detected
• In practice this means a much more stable combustion cycle. This is especially important for operating the engine in extreme outside air conditions. Very cold or very warm and humid, as well as in high density altitude conditions are not a problem for the new engine. Also, Idle regime is even more stable than before.
• The brushless pump itself is a professional grade type. It features two ball bearings, automotive seals and reinforced pump gears.

The valves are integrated, saving some weight and installation complexity. Pump and ECU are external.

Finally, this engine shows the best fuel efficiency of all the engines available on the market on the paper. However this will have to be verified on the dynamometer. RCJI will certainly get one of these pretty soon and will be able to provide independent data on that matter.