Fulqrum Publishing Home   |   Register   |   Today Posts   |   Members   |   UserCP   |   Calendar   |   Search   |   FAQ

Go Back   Official Fulqrum Publishing forum > Fulqrum Publishing > IL-2 Sturmovik: Cliffs of Dover > Technical threads > FM/DM threads

FM/DM threads Everything about FM/DM in CoD

Reply
 
Thread Tools Display Modes
  #51  
Old 05-24-2012, 07:41 PM
fruitbat's Avatar
fruitbat fruitbat is offline
Approved Member
 
Join Date: Jan 2010
Location: S E England
Posts: 1,065
Default

Still no source, i wonder why.......
Reply With Quote
  #52  
Old 05-24-2012, 07:45 PM
Crumpp's Avatar
Crumpp Crumpp is offline
Approved Member
 
Join Date: Feb 2008
Posts: 1,552
Default

Quote:
Only in emergency or special operational conditions the aircraft is flow at the "maximum rpm/boost for level flight" (later called "all out") limits and not above.
Read above it.....


"rpm limitations are directly associated with similar limitations on boost pressures also defined in relation to the operational condition".........

(vi) It may only be exceeded momentarily during aerobatics, fighting manoeuvers, or when diving.
Reply With Quote
  #53  
Old 05-24-2012, 08:00 PM
Seadog Seadog is offline
Approved Member
 
Join Date: Jun 2011
Posts: 226
Default

Quote:
Originally Posted by Crumpp View Post
Read above it.....


"rpm limitations are directly associated with similar limitations on boost pressures also defined in relation to the operational condition".........

(vi) It may only be exceeded momentarily during aerobatics, fighting manoeuvers, or when diving.

Dowding:

Quote:
"The use of the automatic boost cut out control enables the pilot to get an emergency boost of + 12lbs per sq. in, from the engine for 5 minutes when the circumstances demand it..."

(ii) Limit of 5 mins, for a maximum of 3,000 rpm at 6.25lb/sq. in. or more.

http://www.spitfireperformance.com/dowding.pdf
Reply With Quote
  #54  
Old 05-24-2012, 08:12 PM
41Sqn_Banks 41Sqn_Banks is offline
Approved Member
 
Join Date: Oct 2007
Posts: 644
Default

Quote:
Originally Posted by Crumpp View Post
Read above it.....


"rpm limitations are directly associated with similar limitations on boost pressures also defined in relation to the operational condition".........

(vi) It may only be exceeded momentarily during aerobatics, fighting manoeuvers, or when diving.
This is related only to "maximum r.p.m. for level flight", described in paragraph (a) of the (vi), not related to "maximum boost for level flight" described in paragraph (b).
Of course the violation in these condition is not intended. It's caused by the constant speed propeller that has a certain delay before it can counteracts a increase/decrease of engine speed.
Reply With Quote
  #55  
Old 05-24-2012, 08:21 PM
NZtyphoon NZtyphoon is offline
Approved Member
 
Join Date: Feb 2012
Location: NZ
Posts: 543
Default

Quote:
Originally Posted by Crumpp View Post
Read above it.....


"rpm limitations are directly associated with similar limitations on boost pressures also defined in relation to the operational condition".........

(vi) It may only be exceeded momentarily during aerobatics, fighting manoeuvers, or when diving.
This is a training manual from 1937 and is general to all aircraft types of the time, so what it has to do with Merlin engines with 100 octane and +12lbs boost in 1940 is anybody's guess. Anyway I'd really like to see the anecdotes - and I note the word anecdotes - about the +16 lbs on 87 Octane...
Reply With Quote
  #56  
Old 05-24-2012, 08:24 PM
fruitbat's Avatar
fruitbat fruitbat is offline
Approved Member
 
Join Date: Jan 2010
Location: S E England
Posts: 1,065
Default

re the anecdotes,


Last edited by fruitbat; 05-24-2012 at 08:51 PM.
Reply With Quote
  #57  
Old 12-07-2012, 05:20 AM
FlyingHistory FlyingHistory is offline
Approved Member
 
Join Date: Aug 2012
Location: San Diego
Posts: 1
Default

I'm going to risk a newb. mistake of going back to the thread title, which was "A.P. 129 RAF Flying Training Manual, Part I - Landplanes". I have an unintentionally hilarious 1939 Hurricane manual, which is trying to explain how to deal with spins. It concludes with the following:
Quote:
The instructions laid down in the Flying Training Manual Part I., Chapter III, paragraph 134, are applicable to the Hurricane, but should be amplified in light of the foregoing remarks.
I would love to get my hands on this paragraph 134, which probably says something like "get out of a spin before your altitude is too low." Does anyone have suggestions where to find it? I've got quite a collection of WW2 manuals, but mostly US.
Thanks.
Reply With Quote
  #58  
Old 12-07-2012, 09:51 AM
NZtyphoon NZtyphoon is offline
Approved Member
 
Join Date: Feb 2012
Location: NZ
Posts: 543
Default

Quote:
Originally Posted by FlyingHistory View Post
I'm going to risk a newb. mistake of going back to the thread title, which was "A.P. 129 RAF Flying Training Manual, Part I - Landplanes". I have an unintentionally hilarious 1939 Hurricane manual, which is trying to explain how to deal with spins. It concludes with the following:
I would love to get my hands on this paragraph 134, which probably says something like "get out of a spin before your altitude is too low." Does anyone have suggestions where to find it? I've got quite a collection of WW2 manuals, but mostly US.
Thanks.
If you send a personal message to 41_Sqn Banks, who originally posted the pages from the manual, he could most likely help.
Reply With Quote
  #59  
Old 12-07-2012, 03:39 PM
Glider Glider is offline
Approved Member
 
Join Date: Jun 2011
Posts: 441
Default

At least no one has said 16 squadrons

Damn
Reply With Quote
  #60  
Old 12-07-2012, 04:34 PM
Al Schlageter Al Schlageter is offline
Approved Member
 
Join Date: Oct 2007
Posts: 657
Default

Quote:
Originally Posted by Glider View Post
At least no one has said 16 squadrons

Damn
Yes we are all still waiting for the identification of those 16 squadrons.
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. The time now is 03:41 PM.


Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Copyright © 2007 Fulqrum Publishing. All rights reserved.