M15c6

20問 • 2ヶ月前

ユーザ名非公開

通報

問題一覧

Turbine section converting gas stream kinetic energy

into mechanical energy to drive compressor

Turbine Blades Material

Nickel alloy.

Impulse type Turbine Blades used in

starter blades

Impulse-reaction type used in

all modern jet engines

Turbine blade secured to the disc using

fir tree root with locking plate

Cooling air enters the fir-tree turbine blades though the

base of the root

Fir-Tree turbine blades attachment

allows slight movement

The space between two nozzle guide vanes forms

a convergent duct in order to increase velocity

the cooling air flows through the hollow nozzle vanes and rotor blades this method

is known as Convection cooling

Blade Twist

To ensure equal work done all over the blade length (root to tip)

Nozzle Guide Vanes Function

direct gases in proper angle to first stage turbine nozzle.

Nozzle Guide Vanes

Cooling by ceramic coating and bleed air

Creep is permanent elongation in rotor blades,

resulting of thermal stress and high centrifugal force

Most creep resistant blades are

single structure blades

ACC cools turbine casing to

reduce tip losses and improve efficiency in the cruise.

Shrouded turbine rotor blades used

to reduce vibration and improve air flow.

The efficiency of a turbine blade increases proportional,

as its rotational speed increases

The nozzle guide vanes and at the rotor blades are cooled by the method of

film cooling

Running clearance on a turbine disk is kept to a minimum to

reduce tip losses

advantage of an axial turbine is that it

allows very high airflow which is needed to create the high thrust of modern engines

module 1 ch1

ユーザ名非公開 · 53問 · 11ヶ月前

module 1 ch1

53問 • 11ヶ月前

ユーザ名非公開

ユーザ名非公開 · 68問 · 11ヶ月前

68問 • 11ヶ月前

ユーザ名非公開

ユーザ名非公開 · 68問 · 11ヶ月前

m4 ch 2

m4 ch 2

m4 ch 3

m4 ch 3

m 4 ch 4

m 4 ch 4

M15c1

M15c1

M15c2

M15c2

M15c3

M15c3

M15c4

M15c4

M15c3

M15c3

M15c4

M15c4

M15c5

M15c5

M7c1

M7c1

M7c2

M7c2

M7c3

M7c3

M7c3

M7c3

M7c4

M7c4

問題一覧

Turbine section converting gas stream kinetic energy

into mechanical energy to drive compressor

Turbine Blades Material

Nickel alloy.

Impulse type Turbine Blades used in

starter blades

Impulse-reaction type used in

all modern jet engines

Turbine blade secured to the disc using

fir tree root with locking plate

Cooling air enters the fir-tree turbine blades though the

base of the root

Fir-Tree turbine blades attachment

allows slight movement

The space between two nozzle guide vanes forms

a convergent duct in order to increase velocity

the cooling air flows through the hollow nozzle vanes and rotor blades this method

is known as Convection cooling

Blade Twist

To ensure equal work done all over the blade length (root to tip)

Nozzle Guide Vanes Function

direct gases in proper angle to first stage turbine nozzle.

Nozzle Guide Vanes

Cooling by ceramic coating and bleed air

Creep is permanent elongation in rotor blades,

resulting of thermal stress and high centrifugal force

Most creep resistant blades are

single structure blades

ACC cools turbine casing to

reduce tip losses and improve efficiency in the cruise.

Shrouded turbine rotor blades used

to reduce vibration and improve air flow.

The efficiency of a turbine blade increases proportional,

as its rotational speed increases

The nozzle guide vanes and at the rotor blades are cooled by the method of

film cooling

Running clearance on a turbine disk is kept to a minimum to

reduce tip losses

advantage of an axial turbine is that it

allows very high airflow which is needed to create the high thrust of modern engines