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

Hydraulics.., A pump delivers 40 lpm to a 100 mm bore/25 mm rod cylinder to...

A pump delivers 40 lpm to a 100 mm bore/25 mm rod cylinder to move a load of 22 kN. A throttle is introduced on the rod end, and return flow with a 10 lpm flow rate. A 70 bar press

Flight fine pitch stop failure, FLIGHT FINE PITCH STOP FAILURE (OVERSPEED) ...

FLIGHT FINE PITCH STOP FAILURE (OVERSPEED) An overspeed is prevented by an automatic coarsening device. A switch mounted on the Hub closes when the blade angle is below Flig

Liquidity ratios, Liquidity Ratios: The liquidity ratios of the company hel...

Liquidity Ratios: The liquidity ratios of the company help in determining the ability of the company to convert its current or liquid assets readily into cash. Higher the ratios be

Pov display, require help in making pov display

require help in making pov display

Define Thermal equilibrium, Thermal equilibrium The definition and measurem...

Thermal equilibrium The definition and measurement of temperature must be logically preceded by the concept of thermal equilibrium and the Zeroth law. To determine operationally wh

Advantages and disadvantages of hot working and cold working, Q. Describe t...

Q. Describe the advantages and disadvantages of hot working and cold working processes. Explain the extrusion process. Ans. Advantages of hot working process

Enthalpy, What is the deference between enthalpy anne internal energy u

What is the deference between enthalpy anne internal energy u

Assignment, Financial Management, Finance This case has been framed in orde...

Financial Management, Finance This case has been framed in order to test the skills in evaluating a credit request and reaching a correct decision. Perluence International is large

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

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