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

Grain boundary, Q.  Describe the structure of grain boundary. Ans. O...

Q.  Describe the structure of grain boundary. Ans. One phase of metal contains many grains of various orientation, the individual crystals are called grains. Thus a grain is

Principle of means of escape - fire safety management, Principle of Means o...

Principle of Means of Escape: The means of escape with which a building is provided are simply the ways out of the building that can be safely used in the event of a fire.  It

Mine engineering, Students are to undertake a tunnel blast design for the f...

Students are to undertake a tunnel blast design for the following conditions: • Tunnel is 5.5m wide by 5.5.m high • Rock is a sandstone with a UCS of 400 MPa • Drill hole diameter

Homework, Assume that a movie is two hours long, that the frame rate is 30 ...

Assume that a movie is two hours long, that the frame rate is 30 frames per second, and that the resolution per frame is 1080i (1920×1080 pixels per frame), and that each pixel is

Numerical methods, Numerical solutions to equations: Many practical p...

Numerical solutions to equations: Many practical problems in engineering involve complex boundary conditions and variable properties that cannot be solved analytically, creat

Armature cipl, in which type of armature winding Equaliser ring dummy coils...

in which type of armature winding Equaliser ring dummy coils are used

Inspection checklist, Inspection Checklist: The following checklist is...

Inspection Checklist: The following checklist is a starting point and it may be added to if subsequent inspections and debriefs indicate that this would be beneficial.   It sh

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