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

Exhaust jet mixing - aircraft design, Exhaust Jet Mixing: Figure shows ...

Exhaust Jet Mixing: Figure shows that the noise from the exhaust jet is the main contributor to the total noise generated by a low by-pass ratio turbo-fan. For a turbo-jet the

Blow hole and pin hole porosity, Difference between   Blow hole and pin hol...

Difference between   Blow hole and pin hole porosity          Blow hole : They appear as cavities in a casting. When they are visible on the upper surface of the castings, th

Software engineering, what is differnce between need and requirement?

what is differnce between need and requirement?

Tube drawing, Drawing operation can also be used for reducing the tube cros...

Drawing operation can also be used for reducing the tube cross-section. The drawing equipment consists of draw bench and die. One end of the tube is pulled through the die over a f

Combustion chamber injection system - aircraft engine , Combustion chamber ...

Combustion chamber injection system: Injecting a water or water/methanol mixture into the combustion chambers increases the mass flow through the turbine and the high volumetri

Calculate the thermal conductivity, A steak which is 2.5cm thick is cooking...

A steak which is 2.5cm thick is cooking in a frying pan which has a 4mm thick base. The electric element used to heat the pan is turned to a level such that the bottom surface of t

Specific air range & specific endurance , Specific Air Range & Specific End...

Specific Air Range & Specific Endurance  Key cruise parameters are Range (distance flown) and Endurance (time of flight). It is important to be able to relate these to the amou

Aerofoil aerodynamics , We now have some idea about what models are availab...

We now have some idea about what models are available to simulate the flow over an aerofoil, and also how to use the Hanley package to apply these methods. Keep referring to you

Enhancing finance revenue.., Enhancing finance revenue In Corporate Fin...

Enhancing finance revenue In Corporate Finance and Business financial is the area of financial that promotion with financial options of organizations. Its main objective is to

Topic Drilling Fluid Fundamentals, Read the titled books Drilling Fluid Eng...

Read the titled books Drilling Fluid Engineering Manual. Textbook prepared by M-I Drilling Fluids Co.,1998; Halliburton Cementing Tables. Casing and cement data tables prepared by

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