Abstract :
This study examines the effect of using alternative fuels, specifically
methanol and nitromethane (30%), on the engine of an OS 25 LA remote control
(RC) airplane model. Methanol, as a fuel that can be produced from renewable
resources, provides the potential to reduce dependence on fossil fuels. Nitro (30%)
has specific properties that improve engine performance, especially Thrust and
propeller rotation. This experimental study aims to understand the effect of both
fuels on the Thrust and propeller rotation of an OS 25 LA engine. Results show that
nitro fuel (30%) produces higher Thrust (1,464 N) and faster propeller rotation
(11,325) compared to methanol-castor oil. Combustion efficiency was also higher
in nitro (30%) (18%), indicating more optimal fuel energy utilization. Thus, the use
of nitro (30%) can be considered as a more efficient and quality fuel option to
improve the performance of the RC OS 25 LA engine.