Final answer:
Reverse Thrust on a turbofan engine uses the angle of attack of the fan blades to redirect the airflow and create a braking effect. It is called or referred to as thrust reversal.
Step-by-step explanation:
Reverse Thrust on a turbofan engine uses the angle of attack of the fan blades to redirect the airflow and create a braking effect. It is called or referred to as thrust reversal.
When the reverse thrust is engaged, the fan blades are pitched to a negative angle, or the angle is increased by reversing their direction. This causes the airflow to be directed forward, opposite to the usual direction of thrust, which helps slow down the aircraft during landing.
An example of a turbofan engine that utilizes reverse thrust is the GE90-110B1 turbofan engine, which is mounted on a Boeing 777.