Sponsor Message:
Aviation Technical / Operations Forum
My Starred Topics | Profile | New Topic | Forum Index | Help | Search 
DC-10 N1 Vs EPR  
User currently offlineUAL Bagsmasher From United States of America, joined Sep 1999, 2148 posts, RR: 10
Posted (10 years 8 months 3 weeks 8 hours ago) and read 2982 times:

Is it true that DC-10 crews use N1 to set thrust rather than EPR? I remember hearing that somewhere along the way at UA. Can anyone confirm this?

11 replies: All unread, jump to last
 
User currently offlineNightFlyer From United States of America, joined Sep 2001, 95 posts, RR: 3
Reply 1, posted (10 years 8 months 3 weeks 7 hours ago) and read 2936 times:

We don't have EPR on the -10's and -30's, just N1. I'm not familiar with the -40's but they might have EPR's since that have the Pratts.


NightFlyer


User currently offlineUAL Bagsmasher From United States of America, joined Sep 1999, 2148 posts, RR: 10
Reply 2, posted (10 years 8 months 3 weeks 7 hours ago) and read 2927 times:

Isn't EPR a more direct measurement of thrust than N1? How do they take that into account?

User currently offlineMD11Engineer From Germany, joined Oct 2003, 14127 posts, RR: 62
Reply 3, posted (10 years 8 months 3 weeks 5 hours ago) and read 2850 times:

On high bypass engines 90% of the thrust come from the fan, which is directly proportional to N1 speed, so EPR is not really needed. I don´t know why P&W still insist on using EPR.

Jan


User currently offlineAJ From Australia, joined Nov 1999, 2396 posts, RR: 24
Reply 4, posted (10 years 8 months 3 weeks 5 hours ago) and read 2837 times:

DC-10-10/-30 would have N1, DC-10-40 would have EPR!

User currently offlineB747Skipper From , joined Dec 1969, posts, RR:
Reply 5, posted (10 years 8 months 3 weeks 3 hours ago) and read 2816 times:

P&W engines (JT9) use EPR as primary power setting means.
GE engines (CF6) use N1, no EPR available on these engines>
xxx
Happy contrails  Smile
(s) Skipper


User currently offlineMD-11 forever From , joined Dec 1969, posts, RR:
Reply 6, posted (10 years 8 months 3 weeks 2 hours ago) and read 2808 times:

True, GE(and CFM 56) engines are controlled by N1 speed, while Pratt and RR are controlled by EPR.

Cheers, Thomas

[Edited 2004-03-09 07:59:43]

User currently offlineMusang From United Kingdom, joined Apr 2001, 872 posts, RR: 7
Reply 7, posted (10 years 8 months 2 weeks 6 days 14 hours ago) and read 2750 times:

737 3/4/500s, and Avro RJ 100/146s have no EPR gages and use N1.

Regards - Musang


User currently offline3204ever From Denmark, joined Mar 2004, 21 posts, RR: 0
Reply 8, posted (10 years 8 months 2 weeks 6 days 14 hours ago) and read 2752 times:



Airbus 320 series with IAE V2500,use EPR as primary power setting.


User currently offlineNightFlyer From United States of America, joined Sep 2001, 95 posts, RR: 3
Reply 9, posted (10 years 8 months 2 weeks 6 days 11 hours ago) and read 2724 times:

We have MD11's with GE's that use N1's and our PW's use EPR. All of our MD10's use N1.


NightFlyer


User currently offlineUAL Bagsmasher From United States of America, joined Sep 1999, 2148 posts, RR: 10
Reply 10, posted (10 years 8 months 2 weeks 2 days 12 hours ago) and read 2651 times:

Thanks much for the answers!

User currently offlineDC-10Tech From United States of America, joined Jun 2001, 298 posts, RR: 2
Reply 11, posted (10 years 8 months 2 weeks 1 day 22 hours ago) and read 2623 times:

Some DC-10's were delivered with EPR. I don't know how long the GE powered 10's used EPR, but they don't any more.

As a general rule, GE uses N1, P&W uses EPR, regardless of aircraft type.



Forums.AMTCentral.com
Top Of Page
Forum Index

Reply To This Topic DC-10 N1 Vs EPR
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...
DC-10-30 Vs DC-10-40 posted Fri Mar 19 2004 03:08:13 by Hawaii50
A330 Vs. Dc-10-30 Fuelburn posted Thu Oct 16 2003 09:01:28 by Timdegroot
MD-10 Vs DC-10 Vs MD-11 posted Mon Dec 9 2002 06:48:01 by Gigneil
Fadec Or EEC On DC-10-30? posted Sat Nov 11 2006 01:50:47 by MD11Fanatic
The Last Northwest DC-10 Flight posted Thu Nov 2 2006 21:08:48 by LemonKitty
767/DC-10 Doors posted Thu Sep 28 2006 06:31:42 by UAL757
DC-10 Towbar For An L1011 posted Thu Jul 13 2006 06:40:17 by B52murph
DC-10-30 Extra Wing Fairing posted Thu Jul 13 2006 01:53:45 by Dispatcher
DC-10 / MD-11 What's The Difference? posted Sat Jun 17 2006 23:55:28 by ContinentalGuy
Old Photo Of DC-10: Tech/ops Question posted Wed Jun 22 2005 16:38:12 by September11

Sponsor Message:
Printer friendly format