Need real world Spit and Hurri data

[ACE-OF-ACES]

Originally Posted by Seadog

This test of the Hurricane should be pretty close:


http://www.wwiiaircraftperformance.o...ane/l2026.html

Hey Seadog

Started reading the reports this morning.. In the Hurri report they talk about the tests being done for two different cases.. Where the 'Service Load' is 677 in one case and 1,111 in another. Initally I thought this was refering to the fuel load, but from the report I see the fuel load was the same in both cases.

So, what is this 'Service Load'?

Does it have something to do with the ammo load?

Also, I assume this test was for the 87 oct and not the 100 oct?


Any info would be welcome! Thanks in advance!

[Ze-Jamz]

Originally Posted by ACE-OF-ACES

Hey Seadog

Started reading the reports this morning.. In the Hurri report they talk about the tests being done for two different cases.. Where the 'Service Load' is 677 in one case and 1,111 in another. Initally I thought this was refering to the fuel load, but from the report I see the fuel load was the same in both cases.

So, what is this 'Service Load'?

Does it have something to do with the ammo load?

Also, I assume this test was for the 87 oct and not the 100 oct?


Any info would be welcome! Thanks in advance!

I would say its the extra ammo?

If you look at this http://www.spitfireperformance.com/ab197.html you can see a rough breakdown of weight...I know its not the model your looking at but judging by that i would say the 'service weight' of ammo would make up the 'flying' weight in total

[ACE-OF-ACES]

Hey guys

Did a quick Hurrir MkI ROC test

NOTE this was a quicky! Don't draw any conclusions from this! In that I am not 100% sure I had all the settings (boost, mixture, etc) set right.. That and I have not converted the data to standard atmospheric conditions yet.

PS note the Z AGL and ZMSL values are internal game values, that is to say they are not the values that drive the gauges (indicated). Also note that I convert the indicated altitude to pressure and than density altitude. Still need to validate and or prove to myself that the Z temperature can be used in these calculations

In short, don't let these results make you happy or sad!

Just presenting what I have thus far to generate some discussions on the topic and get feedback

[ACE-OF-ACES]

Originally Posted by Ze-Jamz

I would say its the extra ammo?

I see what your saying.. seems right to me! Just thought I would put it out there as one of those unknows (to me) in the hopes some hurrie and/or britt lingo experts can fill in the blanks here

[Seadog]

Originally Posted by ACE-OF-ACES

Hey Seadog

Started reading the reports this morning.. In the Hurri report they talk about the tests being done for two different cases.. Where the 'Service Load' is 677 in one case and 1,111 in another. Initally I thought this was refering to the fuel load, but from the report I see the fuel load was the same in both cases.

So, what is this 'Service Load'?

Does it have something to do with the ammo load?

Also, I assume this test was for the 87 oct and not the 100 oct?


Any info would be welcome! Thanks in advance!

I think the increased load in the 6750lb test was done by using ballast to simulate the effects of more armour, greater weight from self sealing tanks, internal airframe changes to minimize fire risk and/or full fuel/oil tanks; rather than a variation in ammo load. Also planned advances in avionics such as IFF transponders.

[ACE-OF-ACES]

Just finished a top speed per altitude test..

As before.. this is a quicky prelim test!

Where, for now, I am focusing more the the post processing code (matlab) that the flight itslef

Note in the following graphs I applied some filtering (data reduction) on the raw CoD data

Such that I only show/graph the MAX speed vale per altitude

Note on the same graph I ploted the real world TAS data too so you can visually compare the ingame results to the real world results

[Seadog]

Originally Posted by ACE-OF-ACES

Just finished a top speed per altitude test..

As before.. this is a quicky prelim test!

Where, for now, I am focusing more the the post processing code (matlab) that the flight itslef

Note in the following graphs I applied some filtering (data reduction) on the raw CoD data

Such that I only show/graph the MAX speed vale per altitude

Note on the same graph I ploted the real world TAS data too so you can visually compare the ingame results to the real world results

You might also want to look at the RAE chart:http://www.wwiiaircraftperformance.o...I-raechart.jpg
again, and the Hurricane data card.

[ACE-OF-ACES]

Originally Posted by Seadog

You might also want to look at the RAE chart:http://www.wwiiaircraftperformance.o...I-raechart.jpg
again, and the Hurricane data card.

Thanks Seadog!

Just to be crystal clear.. this data is for the 87oct?

And of all the graphs listed in the graph, which one should I be using to compare to?

On that note, do you (anyone) have any 100oct test data for the Hurri?

Thanks in advance!

[Seadog]

Originally Posted by ACE-OF-ACES

Thanks Seadog!

Just to be crystal clear.. this data is for the 87oct?

And of all the graphs listed in the graph, which one should I be using to compare to?

On that note, do you (anyone) have any 100oct test data for the Hurri?

Thanks in advance!

The RAE chart:
http://www.wwiiaircraftperformance.o...I-raechart.jpg
is for a 100 octane fueled Hurricane, but the boost is limited to 6.25lb, IOW, no tests were done at the 5min combat rating, but the revised PEC figures resulted in more accurate speeds from prior tests. This test gives data points at 5000 and 10000ft for various levels of boost up to 12lb:

http://www.wwiiaircraftperformance.o...-l1717-cal.jpg

The ability of the Merlin III to give more than 6.25lb boost above 10,000ft is shown in the Spitfire I RAE chart:
http://www.spitfireperformance.com/s...-rae-12lbs.jpg
, since it also uses 12lb boost, so using these charts should enable you to reconstruct Hurricane performance using 12lb boost, at least in level flight.
as was done here:http://www.wwiiaircraftperformance.o...peed-HRuch.png

and here for climb rate at 12lb boost:
http://www.wwiiaircraftperformance.o...limb-HRuch.png

[ACE-OF-ACES]

Thanks seadog!

Just so I know, what does PEC stand for? wrt the revised PEC values? Do you know what was done to 'revise' them? This is not a UK way of saying the data was converted to standard day.. right?