Lernkarten

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Erstellt / Aktualisiert 22.01.2018 / 21.01.2019
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0 Exakte Antworten 11 Text Antworten 66 Multiple Choice Antworten
Fenster schliessen

The exhaust nozzle of a civil turbofan engine is

divergent

convergent

convergent-divergent

Fenster schliessen

Across the rotor of an axial compressor stage

absolute velocity increases

total pressure increases

total pressure remains constant

absolute velocity remains constant

Fenster schliessen

In a civil turbofan engine, the fan thrust is approximately

20-30% of the total thrust

40-50% of the total thrust

50-60% of the total thrust

75-80% of the total thrust

Fenster schliessen

In the impeller of a centrifugal compressor,

air velocity decreases while pressure and temperature increase

air velocity, pressure and temperature increase

air velocity increases while pressure and temperature decrease

air velocity remains constant while pressure and temperature increase

Fenster schliessen

In a two-spool turbofan engine, the fan is usually driven

directly by the high pressure turbine

by the high pressure turbine, through a reduction gear

directly by the low pressure turbine

by the low pressure turbine through a reduction gear

Fenster schliessen

Across the rotor of a turbine

total pressure decreases

temperature increases

relative airspeed increases

absolute airspeed increases

Fenster schliessen

The CS-23 airworthiness regulations apply to

aerobatic aircraft

light utility aircraft

helicopters

transport aircraft

Fenster schliessen

On some type of ejection seat the explosive cartridges must be replaced every two years. This maintenance concept is known as

hard time

reliability control

on condition

condition monitoring