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

Fire risk assessment in uk - fire protection engineering, Fire risk assessm...

Fire risk assessment in UK: In the UK FRAs are required by law in all commercial premises.  But the FRAs are not the same as described in NFPA 551.  The principles remain the

Aviation legislation - maximum take-off mass, Aviation legislation - MAXIMU...

Aviation legislation - MAXIMUM TAKE-OFF MASS: Aircraft companies intending to manufacture a new design must have approval under Chapter A8-1 of BCAR or JAR-21 (Certification Pr

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

How to draw schiography in a perspective view of an object

Hybrid ic, HYBRID IC: Hybrid IC's are formed by utilizing various combi...

HYBRID IC: Hybrid IC's are formed by utilizing various combinations of monolithic, thin-film and thick film techniques and may in certain circumstances contain discrete semicon

Comparison of fp result with other metods, Comparison of  fp result with o...

Comparison of  fp result with other metods Comparisons of FP results with results from other computational methods for inviscid flows are given. The FP results have been obtain

Thrust augmentation - aircraft engine , Thrust augmentation: There are ...

Thrust augmentation: There are occasions when the maximum thrust from a basic gas turbine engine is inadequate and some method of increasing the available thrust is required wi

Reduction gearing in aircraft engine , Reduction Gearing : Compound epi...

Reduction Gearing : Compound epicyclic reduction gears enable a greater reduction in speed to be obtained without resorting to larger components. They may be of either the fix

VLSI, what is meant by VMOS

what is meant by VMOS

Shelf list filing - library management, Shelf List Filing   Shelf list ...

Shelf List Filing   Shelf list reflects the arrangement of documents in the library. That is to say, the classificatory arrangement of the documents in a library can be seen th

Environmental engineering, compare conventional lagoon,aerated lagoon and a...

compare conventional lagoon,aerated lagoon and activated sludge process,including process flow diagrams and hydraulic retention timesquestion #Minimum 100 words accepted#

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