Sponsor Message:
Aviation Technical / Operations Forum
My Starred Topics | Profile | New Topic | Forum Index | Help | Search 
Vibration Felt Through The Engine  
User currently offlineArzouni From UK - England, joined Aug 2012, 7 posts, RR: 0
Posted (1 year 10 months 3 weeks 5 days 9 hours ago) and read 4024 times:

hello,
please i need help with this research am doing for my uni... please

During a post flight de-brief, a pilot reports excessive vibration felt through the engine to the aircraft, the vibration increased in severity with increasing RPM.

Investigate the possible causes, list your checks to determine the possible cause, and give details of the procedures to carry out the relevant inspections.


i really would appreciate some help.  

7 replies: All unread, jump to last
 
User currently offlineKELPkid From United States of America, joined Nov 2005, 6340 posts, RR: 3
Reply 1, posted (1 year 10 months 3 weeks 5 days 7 hours ago) and read 3996 times:

Let's start with what type of engine-piston or jet? It makes a big difference  


Celebrating the birth of KELPkidJR on August 5, 2009 :-)
User currently offlinefr8mech From United States of America, joined Sep 2005, 5327 posts, RR: 14
Reply 2, posted (1 year 10 months 3 weeks 5 days 6 hours ago) and read 3974 times:

On a jet engine:
-you can rule out an indication problem, because the vibration is felt and it follows the throttle
-external visual inspection of the engine. Inlet and exhaust, for damage and missing parts. Look for "bb's" in the exhaust.
-check any external bleeds for metal
-pull chip detectors
-open the cowl and do a quick look see of the engine components. Take a close look at the mounts and the torque stripe
-perform an internal inspection of the engine; borescope

If no damage found; run the engine at idle and note vibration indication. If normal advance throttle until vibration is evident and begin to isolate components IDG/CSD, Hyd pump and see if they are the cause.

Is this a fan or core vibration. If a fan vibration; perform a fan vibration survey and see if it can be balanced. If a core vibration, chances are you should have already discovered the problem. If not, contact your powerplant engineering department for guidance...and the serial number of the new engine you'll be installing.



When seconds count...the police are minutes away. Never leave your cave without your club.
User currently offlineMD11Engineer From Germany, joined Oct 2003, 13946 posts, RR: 63
Reply 3, posted (1 year 10 months 3 weeks 4 days 16 hours ago) and read 3732 times:

While I agree with your troubleshooting strategy and would use the same approch, the question sounds suspiciously as if the OP is looking for somebody to do his homework assignment for him.

Jan


User currently offlinePGNCS From United States of America, joined Apr 2007, 2817 posts, RR: 45
Reply 4, posted (1 year 10 months 3 weeks 4 days 10 hours ago) and read 3627 times:

Quoting MD11Engineer (Reply 3):
While I agree with your troubleshooting strategy and would use the same approch, the question sounds suspiciously as if the OP is looking for somebody to do his homework assignment for him.

  

My thought exactly. Although I don't mind sharing information, I don't do school assignments for other people.


User currently offlinefr8mech From United States of America, joined Sep 2005, 5327 posts, RR: 14
Reply 5, posted (1 year 10 months 3 weeks 4 days 7 hours ago) and read 3562 times:

Quoting PGNCS (Reply 4):
My thought exactly. Although I don't mind sharing information, I don't do school assignments for other people

Which is why I didn't go nearly into the detail he was asking.

Quoting Arzouni (Thread starter):
Investigate the possible causes, list your checks to determine the possible cause, and give details of the procedures to carry out the relevant inspections.



When seconds count...the police are minutes away. Never leave your cave without your club.
User currently offlinecharliecossie From Germany, joined Oct 2001, 479 posts, RR: 9
Reply 6, posted (1 year 10 months 3 weeks 2 days 23 hours ago) and read 3354 times:

Also would need much more information to perform meaningful troubleshooting.
Typical pilot to just say he had vibration.

Was it N1, N2, BB or even N3 vibration (on a proper engine)?
If it was N1, were there icing conditions and was the ice shedding procedure carried out?
If it was N2 on an engine which also has N3 then there could be serious implications.
Otherwise, workscope one and kick it back out.


User currently offlineHAWK21M From India, joined Jan 2001, 31660 posts, RR: 56
Reply 7, posted (1 year 10 months 3 weeks 2 days 13 hours ago) and read 3267 times:

Quoting PGNCS (Reply 4):

My thought exactly. Although I don't mind sharing information, I don't do school assignments for other people.

Exactly what I was thinking.....
Depends on the type of Engine,it could be engine related or accessory mounted on the GB related.



Think of the brighter side!
Top Of Page
Forum Index

Reply To This Topic Vibration Felt Through The Engine
Username:
No username? Sign up now!
Password: 


Forgot Password? Be reminded.
Remember me on this computer (uses cookies)
  • Tech/Ops related posts only!
  • Not Tech/Ops related? Use the other forums
  • No adverts of any kind. This includes web pages.
  • No hostile language or criticizing of others.
  • Do not post copyright protected material.
  • Use relevant and describing topics.
  • Check if your post already been discussed.
  • Check your spelling!
  • DETAILED RULES
Add Images Add SmiliesPosting Help

Please check your spelling (press "Check Spelling" above)


Similar topics:More similar topics...
Whats The Purpose Of Fins On The Engine Cowlings? posted Sun Jan 23 2011 06:27:39 by SwissVA
The 'Engine Start Procedure' posted Mon Jun 21 2010 03:14:01 by BeakerLTN
747-8: Why The Engine Nacelle Strakes (aka Fins)? posted Sat Feb 13 2010 06:49:36 by western727
Freezing Rain: What's Protecting The Engine Face? posted Wed Dec 30 2009 09:53:57 by Faro
What's That Thingy Called Next To The Engine? posted Tue Nov 18 2008 21:59:15 by NRT744
GTF Or UDF Which Is The Engine Of Future? posted Wed Jun 11 2008 06:53:53 by Tangowhisky
The Engine Anti-Ice Locked To The On Position? posted Thu Dec 21 2006 01:43:42 by Ps76
What Does The Squigglely Thing In The Engine Do? posted Sat Apr 8 2006 04:19:14 by Tony Lu
Take A Tour Through A RR Engine! posted Wed Jan 26 2005 01:11:00 by Kindjordan
How Much Power Does The Engine Of A 340-600 Got posted Tue Jan 11 2005 09:50:58 by Skippy777

Sponsor Message:
Printer friendly format