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FM/DM threads Everything about FM/DM in CoD

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  #1  
Old 05-17-2012, 10:12 AM
41Sqn_Banks 41Sqn_Banks is offline
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Default A.P. 129 RAF Flying Training Manual, Part I - Landplanes

Engine limitations, boost control and cut-out/override.
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Old 05-17-2012, 10:13 AM
41Sqn_Banks 41Sqn_Banks is offline
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Continued.
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Old 05-17-2012, 10:49 AM
NZtyphoon NZtyphoon is offline
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Thanks 41Sqn; attached is another explanation of boost types used by RAF engines from R A Beaumont A.F.R.Ae.S "Aeronautical Engineering: A Practical Guide for Everyone Connected With the Aero Industry"

(3) Override Boost - For the greatest possible power output for take-off or emergency, an increase in pressure above the normal take-off boost is permitted on some engines. This condition is used in conjunction with a special fuel. (p. 106)

The wording is similar to A.P.129, apart from noting that override boost was used in conjunction with a special fuel.
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Old 05-17-2012, 12:02 PM
lane lane is offline
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Quote:
Originally Posted by 41Sqn_Banks View Post
Engine limitations, boost control and cut-out/override.
Wow, great stuff 41Sqn_Banks; thanks for sharing!

As an aside if I may, what equipment and set up are you using enabling you to obtain such beautiful images of these old manuals? Secondly, where do you get this stuff, lol! All I've been able to obtain of such material is monochrome/microfilmed copies from the archives...

Last edited by lane; 05-17-2012 at 12:45 PM.
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Old 05-17-2012, 12:35 PM
IvanK IvanK is offline
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Thanks for sharing Banks and NZTyphoon
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Old 05-17-2012, 01:15 PM
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Crumpp Crumpp is offline
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Quote:
apart from noting that override boost was used in conjunction with a special fuel.
It also notes that boost pressure is above what can be normally achieved with the take off boost override.

We know from the certificate altitude bench test that +10.5lbs was achieved with boost override on 87 Octane fuel.

The achievement of +12lbs is the rating for 100 Octane.

The Germans the same basic principle for in C3 Einspritzung. A very rich mixture to suppress detonation at very high manifold pressures.
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Old 05-17-2012, 01:28 PM
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CaptainDoggles CaptainDoggles is offline
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Holy Christ, guys. Put this trash in the 100 octane thread where it belongs.
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Old 05-17-2012, 01:38 PM
Kurfürst Kurfürst is offline
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Very nice, thanks for sharing!
__________________
Il-2Bugtracker: Feature #200: Missing 100 octane subtypes of Bf 109E and Bf 110C http://www.il2bugtracker.com/issues/200
Il-2Bugtracker: Bug #415: Spitfire Mk I, Ia, and Mk II: Stability and Control http://www.il2bugtracker.com/issues/415

Kurfürst - Your resource site on Bf 109 performance! http://kurfurst.org
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Old 05-17-2012, 03:29 PM
41Sqn_Banks 41Sqn_Banks is offline
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Quote:
Originally Posted by lane View Post
As an aside if I may, what equipment and set up are you using enabling you to obtain such beautiful images of these old manuals? Secondly, where do you get this stuff, lol! All I've been able to obtain of such material is monochrome/microfilmed copies from the archives...
You can buy original manuals at second hand bookshops. For scanning I use a consumer book scanner (in my case Plustek OpticBook 3600 Plus)
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Old 05-17-2012, 04:14 PM
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fruitbat fruitbat is offline
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Quote:
Originally Posted by CaptainDoggles View Post
Holy Christ, guys. Put this trash in the 100 octane thread where it belongs.
No ones forcing you to read rare original documents that someone's very generously posted. Why don't you have a nice day.

@ 41Sqn_Banks, thank you very much for sharing, really interesting

Last edited by KG26_Alpha; 05-17-2012 at 07:37 PM. Reason: removed profanity
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