FAHRENHEIT
Fahrenheit temperature scale where 32 degree determine the freezing point of water and 212-degree boiling point.
FAIL OPERATIONAL
OPERATIONAL FAILURE system with sufficient redundancy, where a single failure leaves it fully operational.
FAIL PASSIVE
PASSIVE FAILURE system which is designed so as not to be workable for a single failure.
EVAPORATION
Evaporation, the transition of a solid or liquid to steam under the influence of the thermal effect.
FAIRING
Spoiler, coating on the structure of the aircraft to provide a smooth surface for the flow of air flow.
FAN (N0.1)
FAN (N1), the rotating part of the engine, driven by low pressure turbine to supply air to the engine and to the pipeline around the front of the engine. The fan provides the bulk of the engine thrust.
FAN (N0. 2)
FAN (N2), a device consisting of one or more rotating blades, prisoedinnenyh to the carrier sleeve and working on the motor. Fans are commonly used for cooling or circulating air.