Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Centrifugal flow - Compressors in Aircraft:
The centrifugal impeller is rotated at high speed by the turbine and centrifugal action causes the air between the impeller vanes to accelerate radially outwards until it is thrown off at the tip into the diffuser. The radial movement of the air across the impeller, from eye to tip, causes a drop in air pressure at the eye and the faster the impeller is turning, the lower the pressure at the eye becomes. The low pressure existing at the eye of the revolving impeller induces a continuous flow of air through the engine intake and into the eye of the impeller. The air, in turn, is accelerated across the impeller and passed into the diffuser. The kinetic energy in the air is then converted to pressure energy ready to enter the combustion chamber. The action of the diffuser is illustrated in figure.
The final volume and mass airflow delivered by the centrifugal compressor is dependent on:
a Pressure ratiob Operating RPMc Diameter of the impeller
NOTE: This is assuming a constant air density at the inlet of the compressor.
Pressure Ratio
The ratio of the inlet pressure to outlet pressure of the compressor is called pressure ratio. The higher the pressure of the air the more efficiently the thrust will be produced with a corresponding improvement to the fuel economy of the engine. The maximum pressure ratio normally obtainable from a single stage centrifugal compressor is approximately 5:1 and from a two stage, approximately 8:1.Design of the more modern centrifugal compressors sees them approaching pressure ratios of 15:1.
Diameter of Impeller
A large impeller will deliver a greater mass of air than a small impeller, however a large diameter compressor leads to an increase in the frontal area of the engine causing excess drag forces on the aircraft.
What is accounting management? Management accounting is worried with offering details to supervisors - that is, individuals within a company who immediate and control its functi
advantages and disadvantages oh hot and cold die working in the subject of basic mechanical engineering
What is the status of corporate governance in UAE?
what are the components, applications, benefits and drawbacks of control engineering?????
#include org 0xoo movlw 0x00 ---------- movlw 0xff movwf PORTB end
Integrated circuits: Integrated circuits, or IC's, have changed the entire electronics industry. Before IC's were developed, all electronic circuits consisted of individual (d
multiplex cicurit
conclusion for epithelial tissue
External cooling Cooling of the external skin of an aero-engine is achieved by suitable design of the aircraft airframe; the layout will depend upon where the engine is fitted
Turbine cooling Airflow: Figure illustrates the turbine cooling airflow of a typical gas turbine engine. The outward flow of cooling air is controlled by air seals of multi-g
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!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd