Ideal intake conditions - aircraft engine, Other Engineering

Assignment Help:

Ideal intake conditions:

For air to flow smoothly through a compressor, its velocity should be about 0.5 mach at the compressor inlet; this includes aircraft flying faster than the speed of sound. Hence intakes are designed to decelerate the free stream airflow to this condition over the range of aircraft speeds. Intakes should also convert the kinetic energy into pressure energy without undue shock or energy loss. This means that the ideal compressor inlet pressure should be the same as the total head pressure at the intake lip.

Intake Efficiency

The magnitude of the losses occurring in an intake during ram compression are measured by means of the intake efficiency. Typical optimum efficiencies of some common types of intake, at subsonic speeds assuming straight-through flow, are:

a   Turbo-jet engine Pitot 99 to 96%
Wing root 95 to 87%
Side 89 to 80%

b Turbo-prop engine Annular 82 to 74% (DART)

In cases where the direction of flow of the air is reversed within the intake, these values are reduced by about 10%.

 


Related Discussions:- Ideal intake conditions - aircraft engine

Aircraft maintance, Explain different types of intakes of aircraft

Explain different types of intakes of aircraft

Restoration of clipped speech signal, Restoration of clipped speech signal ...

Restoration of clipped speech signal using linear prediction

Mechanical pulverization, Mechanical pulverization method is applicable to...

Mechanical pulverization method is applicable to brittle metals like antimony. Many varieties of mechanical pulverizers are in use; some of these have counter rotating plates or r

Flight control - characteristic equation, characteristic equation The c...

characteristic equation The characteristic equation (C.E.) corresponding to the linear state space equations comprising the state equation? x = Ax + Bu and output equatio

Architectural graphics, How to draw schiography in a perspective view of an...

How to draw schiography in a perspective view of an object

Cold junction compensation, Cold junction compensation A recent solutio...

Cold junction compensation A recent solution to the problem of controlling a reference junction temperature is to use a 'cold-junction compensator'. This is an integrated circu

Structural engineering, The closed form solutions for ?max and Mmax are giv...

The closed form solutions for ?max and Mmax are given on page 16.1-276 for several axial loads. Figure C-C2.2 summarizes the results for the first benchmark problem and Figure C-C2

Retaining wall design, #questionYour search - design a trapezoidal retainin...

#questionYour search - design a trapezoidal retaining wall(assume dimensions) ,bulk density 15kN per metre cube ,coefficient of friction of 0.7,angle of internal friction 15degres

The decoupled dynamics, The longitudinal and lateral states of the decouple...

The longitudinal and lateral states of the decoupled linear dynamics are distinct sets of variables. They are conveniently remembered by the flight-control engineer by visualising

Thin-skinned structures , Thin-skinned Structures  The SCB geometry can...

Thin-skinned Structures  The SCB geometry can't be used because the skins are too flexible.  Instead, a centre-notch flexure (CNF) test can be used. A hole is drilled abo

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd