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FM/DM threads Everything about FM/DM in CoD

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  #31  
Old 06-08-2012, 02:50 PM
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Crumpp Crumpp is offline
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I couldn't easily trim the Spitfire
That is actually realistic. Welcome to neutral stability!



I tried it as well and found it extremely difficult to hold at a consistant climb speed. That is neutral stability and why the aircraft is a two fingered airplane. The airplane required very little trim input to achieve a trimmed condition as a result. Unfortunately, it harder to do that with a computer joystick as we don't have the "feel" of the airplane.

What I thought was unrealistic is the oil temperature rise. I could not get the Spitfire to decrease oil temps satisfactorily.

My oil temps stayed around ~85C in level flight at cruise settings with the radiator fully open and very quickly ran up against the maximum of 90C in a climb.

Running that close to redline in level flight is a squawk and it would be investigated to be fixed.

Granted it is summer time but with the exception of taxing, the temps in the summer never get that close redline at cruise settings.

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OK, just some more spare time rambling to indicate we don't have a standard day and we don't know why it changes between servers. Or why Farber's wingman's altimeter reads different to his by 200m
I really think this the biggest issue. We have inconsistant evidence of atmospheric modeling. Temperature is above standard and pressure below standard. That is consistant and our density altitude should be high as per summer conditions.

What is not consistant is the variation in elevation as I assume pressure on the 200 meter altitmeter readings and most disturbing is the FTH is not consistant with a higher density altitude.

If the FTH matches standard day data by occuring at the same standard day altitude, the Flight Model's reaction to the atmospheric model is porked.
  #32  
Old 06-08-2012, 03:33 PM
GraveyardJimmy GraveyardJimmy is offline
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Originally Posted by Crumpp View Post

What I thought was unrealistic is the oil temperature rise. I could not get the Spitfire to decrease oil temps satisfactorily.

My oil temps stayed around ~85C in level flight at cruise settings with the radiator fully open and very quickly ran up against the maximum of 90C in a climb.
The temps mean I run full radiator open at all times in both spitfire and hurricane. I hope it is fixed for the release of the new patch that adds more radiator drag.
  #33  
Old 06-08-2012, 03:55 PM
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The temps mean I run full radiator open at all times in both spitfire and hurricane.
Yeah that is not right. Most of these aircraft cruised with radiator, oil, and cowl flaps closed by design.

You opened up them up for stressful conditions like taxi, climb, or overload conditions.
  #34  
Old 06-08-2012, 04:20 PM
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Crumpp are you ok?......your posts are starting to make sense
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  #35  
Old 06-08-2012, 06:23 PM
5./JG27.Farber 5./JG27.Farber is offline
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Originally Posted by klem View Post
Specsavers?

Seriously, that's weird. Even if he had set field elevation, typically 995mb, thats only about 150 feet/50m difference from the default 1000mb. 992 would be about 240ft/80m.
Im talking about the 109. Maybe its different.
  #36  
Old 06-08-2012, 09:24 PM
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Biggin alt may vary according to spawn point.
Of course, I got my elevation from an aeronautical information site.

Look under METAR and be advised it changes with conditions. It will vary from 597-600 depending on which site you check.

Here it is 600 today:

http://www.checkwx.com/wxmain/fullsite/EGKB
  #37  
Old 06-08-2012, 09:42 PM
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Originally Posted by Crumpp View Post
Of course, I got my elevation from an aeronautical information site.

Look under METAR and be advised it changes with conditions. It will vary from 597-600 depending on which site you check.

Here it is 600 today:

http://www.checkwx.com/wxmain/fullsite/EGKB

Sorry Crumpp but this is nonsense and if you are a commercial pilot you'd know it, an airfields official elevation is fixed and defined according to an average sea level in 'official' aeronautical publications not some obscure hobby website, MDA's and DA's are based on threshold elevation and are defined to individual feet, you 'do not' have variable MDA's or DA's according to Wx changes, next time a real pilot lets you look at a Jeppessen approach plate you will see what I mean, having flown a Learjet45 in and out of Biggin Hill on countless occasions due to the company I worked for being based there I believe I can make comment.

BTW EGKB's official elevation is 599 feet as defined in the UK AIP and official charts

linky..... http://www.ead.eurocontrol.int/eadba...2012-05-31.pdf
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Last edited by bongodriver; 06-08-2012 at 09:55 PM.
  #38  
Old 06-08-2012, 10:26 PM
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BTW EGKB's official elevation is 599 feet as defined in the UK AIP and official charts
Really???

Quote:
Current Weather
Quote:
Current Temp 12°C (54°F)
Dewpoint 7°C (45°F)
Humidity 72%
Altimeter 29.68"Hg
Sea Level Pressure 1005mb
Field Elevation 600.39'
http://www.checkwx.com/wxmain/fullsite/EGKB

There is a reason why you have to listen to the current weather!!

  #39  
Old 06-08-2012, 10:30 PM
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Originally Posted by Crumpp View Post
Really???





http://www.checkwx.com/wxmain/fullsite/EGKB

There is a reason why you have to listen to the current weather!!

Yeah and it isn't to find out airfield elevation.

and as usual you display your complete immunity to actual provided evidence to an argument, I linked the the page directly to the UK AIP aerodrome chart for Biggin hill and you still insist that airfield elevation is deffined in a hobby website, next time you look at an official METAR tell me if you see any reference to airfield elevation.
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Last edited by bongodriver; 06-08-2012 at 10:35 PM.
  #40  
Old 06-08-2012, 10:39 PM
Al Schlageter Al Schlageter is offline
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Country United Kingdom
ICAO ID EGKB
Time UTC 0(+1DT)
Latitude 51.330833 - 51° 19' 51.00" N
Longitude 0.032500 - 000° 01' 57.00" E
Elevation 598 feet/182 meters
Type Civil
Magnetic Variation 002° W (01/06)
Operating Agency CIVIL GOVERNMENT, (LANDING FEES AND DIPLOMATIC CLEARANCE MAY BE REQUIRED)
Operating Hours SEE REMARKS FOR OPERATING HOURS OR COMMUNICATIONS FOR POSSIBLE HOURS
International Clearance Status Airport of Entry
Daylight Saving Time Last Sunday in March to last Sunday in October

http://worldaerodata.com/wad.cgi?id=UK47672
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