In the soft refueling method, the aerodynamic instability of the refueling hose taper sleeve is affected by the airflow, which seriously affects the success rate and safety of aerial refueling/refueling. The wake field of the tanker affects the stability of the hose taper sleeve. major factor.

During normal flight operations, there are several situations that can lead to the smell of gasoline in the cabin.

The full name of APU is Auxiliary Power Unit. Its core part is a turbine engine, which is generally installed in the tail cone part of the rear end of the aircraft.