Sonic airflow - aircraft maintenance, Other Engineering

Assignment Help:

Sonic airflow though divergent and convergent ducts

When a flow of fluid (i.e. gas) flows at sonic speed through a convergent duct a shock wave forms at the exit area of the duct - The exit area is said to be choked. The shock wave forms a restriction to the fluid and pressure will increase, temperature will increase and velocity will decrease.

735_sonic airflow.png

When a gas flow reaches sonic velocity in a convergent duct the nozzle will choke and the pressure will increase. To prevent a pressure rise that would eventually prevent a 'fluid' flow and completely choke the duct a divergent section is added making the duct convergent/divergent (Con/DI). The pressure of gas released into the divergent section of the nozzle causes the velocity of the 'fluid' to increase, pressure to decrease, and therefore temperature to decrease. Gas pressure acts on the walls of the divergent section, this pressure gives additional thrust that is known as pressure thrust.

1834_sonic airflow1.png


Related Discussions:- Sonic airflow - aircraft maintenance

Shrinkage cavities casting defects, Q.   Discuss briefly the causes and rem...

Q.   Discuss briefly the causes and remedies of Shrinkage cavities casting defects.                                                 OR  Why shrinkage cavities are caus

Amplitude shift keying, figure of amplitude shift keying & it''s explainati...

figure of amplitude shift keying & it''s explaination

Water haedness, hardness of bore well water is less than sea water

hardness of bore well water is less than sea water

HELP!!, HELP IN ELECTRONIC...I AM DOING ELECTRONIC ENG. ... GUIDE ME THE WA...

HELP IN ELECTRONIC...I AM DOING ELECTRONIC ENG. ... GUIDE ME THE WAY...

What is raroc?, What is RAROC?  RAROC is a risk-adjusted structure for e...

What is RAROC?  RAROC is a risk-adjusted structure for earnings statistic and earnings control. It is a device for calculating risk-adjusted financial efficiency. And it provide

Oil tank- aircraft engine, Oil tank: The oil tank is usually mounted on...

Oil tank: The oil tank is usually mounted on the engine; it may be a separate unit or part of an external gearbox called the sump. It has provision to allow the system to be f

Acoustic linings in aircraft engine, Acoustic linings in Aircraft engine: ...

Acoustic linings in Aircraft engine: One method of suppressing the noise from the fan stage of a high by-pass ratio engine is to incorporate a noise absorbent liner around the

Pn junction diode, Solving Poisson''s equation find out electric field in t...

Solving Poisson''s equation find out electric field in the transition region and show that electric field is maximum at the junction of p-n diode

#LED MOVING DISPLAY, want a circuit manual of previous led moving dispaly

want a circuit manual of previous led moving dispaly

Career help, hey, i am doing b.e in chemical engineering but by aggregate i...

hey, i am doing b.e in chemical engineering but by aggregate is 55%. i would like to know what courses and preparation i have to do to get a good job. pls reply as soon as possible

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