![enginehistory.org Forum Index](templates/subSilver/images/logo_phpBB.gif) |
enginehistory.org Aircraft Engine Historical Society Members' Bulletin Board
|
View previous topic :: View next topic |
Author |
Message |
jjuutinen
Joined: 13 Jul 2003 Posts: 180
|
Posted: Fri Jul 13, 2007 11:53 Post subject: Merlin power data at reduced CR/+23 boost (100/130 fuel) |
|
|
In RRHT book RR and the Mustang it is mentioned a that a Merlin was modified to run at +23 boost with reduced compression ratio on 100/130 fuel. It then listst the performance improvements it gave for the aircraft (vs. standard Merlin at +18 boost) but not the power developed:( So, how much power at those settings? |
|
Back to top |
|
![](templates/subSilver/images/spacer.gif) |
dbirch Guest
|
Posted: Fri Dec 07, 2007 07:43 Post subject: |
|
|
JJ
Just before the Mustang was fitted with the 5.5 C/R Merlin, an RM10SM was thus modified at Derby and ran on the testbed. Its performance was as follows:
Combat: 3000 rpm +23 lb boost
MS gear - 1835 BHP at 1500 ft.
FS gear - 1690 BHP at 12,500 ft.
Above are static heights.
Hope this answers you question.
Dave Birch, Rolls-Royce Heritage Trust. |
|
Back to top |
|
![](templates/subSilver/images/spacer.gif) |
jjuutinen
Joined: 13 Jul 2003 Posts: 180
|
Posted: Fri Dec 07, 2007 21:53 Post subject: |
|
|
Thanks! Thus it is that the modified Merlin put out 100+ hp over the standard Mk. 66 with the same fuel. Not bad. |
|
Back to top |
|
![](templates/subSilver/images/spacer.gif) |
|
|
You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum
|
Powered by phpBB © 2001, 2005 phpBB Group
|