Engine crash
In model airplanes, the engine camber describes the downward inclination of the propeller shaft.
The motor should fall as the motor (for aircraft, in which the wings are located higher wing aircraft , high-deck ), preventing that the model takes a more or less upwardly depending on the engine performance. The reason for the pulling up is that the pulling point of the motor is below the center of resistance of the model and thus exerts a torque around the transverse axis. Especially small and light models, which also have a wing profile with a very high lift coefficient , require a very large engine camber. Without this Downthrust the aircraft would under engine power as opposed to glide without engine too steep rise and by the inadequate rate a stall suffer, which would cause a crash without prior countermeasure ( "Press").
