ATP Forum 
User Name Password
Register FAQ Members List Calendar Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Display Modes
  #1  
Old 18-04-2012, 10:41
jansen jansen is offline
Registered Member
 
Join Date: Nov 2011
Posts: 17
Default stall and surge

What is the difference between a compressor stall and a compressor surge?
Reply With Quote
  #2  
Old 18-04-2012, 16:47
keithjackson keithjackson is offline
Bristol Instructor
 
Join Date: May 2009
Posts: 230
Default Re: stall and surge

Hi,
in very simple terms, the compressor is made from lots of aerofoil blades, and just like wings, if the angle of attack is incorrect, the aerofoils can stall. This will give disturbed airflow in the compressor and can also slow the airflow down.
If the airflow slows down sufficiently, then the higher pressure air at the rear of the compressor will reverse and flow back towards the inlet. This is a surge.
A surge can also be caused by overfuelling, causing an increase in pressure in the combustion chamber, again giving a reversal of airflow.

Hope this helps
Keith
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT +1. The time now is 23:54.


Powered by vBulletin® Version 3.7.1
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
(C) 2011 Bristol Groundschool