Spitfire service ceiling...

[LoBiSoMeM]

Originally Posted by Kwiatek

At 28 000 ft RL Spitfire MKII had 1230 ft/min climb rate and at 30 000 ft it had still 995 ft/min ( near 1000 ft/min). Co CLOD SPitfire MKII above 20 000 ft has at least 2 times worse climb rate then RL plane.



CLOD is way off regarding high alt performacne of all planes. It is the fact. Planes dont reach their historical service celling and above 20 000 ft they have seriously performacne drop which casue that above that height they are practically flightless planes. Not mention that 109 could climb only for ab. 7.5 km.

Using your source (Spitfire Performance) as I said, in CloD we have lower values comparing with the RL sources, but if you scale tings down (the maximum ceiling), it's not "at least 2 times worse climb rate then RL plane".

And this discussion about FM is forever. You believe that your work is the best in the world, and your sources are correct. I just want some balance and fly.

Mod the FMs and release to the community to test. CloD engina can achieve +32.000ft of maximum ceiling easily.

Bye!

[trademe900]

Originally Posted by LoBiSoMeM

I don't tried, i do that.

And i compare the climb rates with some "real life data". It's not so "way off".

By the way, you tested anything? People here say that things are "broken", wrong", but based in what? Please, numbers, tests in CloD (with engine settings used), etc.

People just spread some info that things are "way off" and nothing to do the comparisons.

As I said up, Spit IIa can sustain a climb rate off 500ft/m until 29.000 celing, and i don'y see why things above 17.000 "goes out the window"... I can fight in such high.

You are digging yourself a hole here. The Cod climb rates are way, way off. Takes 7.7 mins to climb to 17,000 in cod, real life spit can get there in just over 6 mins, and that is only with 6.4lbs boost!

Also, the hurricane climbs faster than the spit. Hurricane is closer to its real life performance but still climbs too slow.

[ACE-OF-ACES]

Truth be told

Most so called 'errors' in the FM can be found in the mirror..

see sig

[LoBiSoMeM]

Originally Posted by ACE-OF-ACES

Truth be told

Most so called 'errors' in the FM can be found in the mirror..

see sig

Second time i agree with you. People just can't fly right.

[ACE-OF-ACES]

Originally Posted by LoBiSoMeM

Second time I was brave enough to admit i agree with you. People just can't fly right.

Fixxed that for ya!

[trademe900]

Originally Posted by ACE-OF-ACES

Fixxed that for ya!

Yes, very funny... but I'm sorry, there is no denying the climb rates are appallingly slow. The plane is basically not even in a state of flight up there. Above 10,000k the time to height vs real life just plummets through the floor.

Good luck getting to 20k in 7 mins in cod spit! Hurricane will get there faster

[Kwiatek]

Originally Posted by LoBiSoMeM

Second time i agree with you. People just can't fly right.

Yea? Did you try DCS P-51? It is more complex then CLOD but their P-51 could get much more realistic performacne then any CLOD plane:

http://forums.eagle.ru/showthread.php?t=95479

http://forums.eagle.ru/showthread.php?t=94020&page=2

Speed and climb rate is very close to RL data in DCS P-51. Also i could reach service celling 41 000 ft ( RL data claim 40 000 - 41 600 ft depending of combat load). Plane is flown according to RL manual.

Pity that CLOD is way off comparing to RL data. RL SPitfire MKII between 20 000 ft and 30 000 ft should have sustained climb rate between 2200ft/min to 1000 ft/min. Try the same in CLOD.

So it is no pilot error just game bugs which confirm even 1C.

[ATAG_Snapper]

This is a recent post I placed in another forum. It's a quick comparison between the ROC of the real Spitfire 2a P.7280 and its counterparts from this sim and A2A Wings of Power 3. I hasten to add that I make no claim of high precision that would be achieved via Ace of Ace's or Klem's data gathering methodology just a quick, one-trial test of each sim vs 1940 data. Still, it's a good indication that somethin' ain't right:


I did some climb tests with the Spitfire 2a in Cliffs of Dover, then compared it to the results of the actual trial done on the real Spitfire 2a P.7280; then for smiles and chuckles ran the same test on the A2A Wings of Power 3 Spitfire 2a. I don't know the precise methodology used for the real test done back in 1940/41, but for the two sims I used the same procedure. Radiator was set to Full Open (100%). Per the Pilots Notes and the test run on P.7280 I ran both sim Spits at 2850 rpms, boost 9 lbs (= 100% throttle), flew at sea level until speed stabilized, then pulled up and started the stopwatch. I did my very best at maintaining the same climb speed of 168 mph IAS for both aircraft. I filmed both cockpits with FRAPS and timecoded both in real time. My data was taken from reviewing this video (link at bottom of this post).

Note: The Cliffs of Dover Spitfire 2a temps began getting dangerously high at 14,500 feet, so I coarsened pitch to reduce rpms down to 2600 which kept the engine from overheating. I concluded both tests at 20,000 feet as we all know the CoD flight model is borked above this -- no point extending the agony. OTOH, the A2A Spitfire 2a continued merrily on up past 25,000 feet at 2850 rpms with no overheating problems at all. I tried to get all the weights in line; the A2A Spitfire 2a came in a little light even with full ammo load, fuel 100%, and pilot weighing 300 lbs (burp! Supersize me!). Here are the numbers (video to follow):

Aircraft_____________ P.7280 _______________CoD _______A2A
Weight (lbs)__________ 6172 _______________6158 _______6086

Altitude -------------------- TIME ELAPSED FROM START (' minutes " seconds)
(feet)_______________P.7280________________CoD____ ___A2A______
SEA LEVEL _________0'00" ____________________0'00"_______0'00"
1000______________0.35 = 0'21"_____________ 0'11"_______0'06"
2000______________0.7 = 0'42"_______________0'34"_______0'15"
3000______________1.0 = 1'00"_______________1'10"_______0'30"
5000 ______________1.7 = 1'42"_______________2'12"_______1'01"
6500 ______________2.2 = 2'12"_______________3'04"_______1'24"
10000_____________3.4 = 3'24"_______________4'57"________2'25"
13000_____________4.3 = 4'18"_______________6'42"________3'14"
15000_____________5.0 = 5'00"_______________7'56"________3'51"
16500_____________5.6 = 5'36"_______________8'46"________4'17"
18000_____________6.1 = 6'06"_______________9'46"________4'45"
20000_____________7.0 = 7'00"______________11'58"________5'21"
12800*____________4.3 = 4'18"_______________6'27"________3'11"
* FTH
So, depending on the methodology used by the RAE testers, the A2A Spitfire 2a looks a little optimistic compared to the Real McCoy, but certainly closer in the ballpark compared to the John Deere edition of the Cliffs of Dover Spitfire 2a. But it certainly answers one aspect as to why Red players keep their Spits under 10 angels!

Top speeds of the two sims are a little off at 1000 feet (as tested):

P.7280: 294 mph IAS
CoD: __280 __"__ "
A2A: __301 __"__ " (Holy Moley....close to the dreaded Uber-Sissyfire 2a of the previous 1.59 Retail Version!!!!! Who'da thunk?)

Boring video alert!!!!!!

http://vimeo.com/53746471

[Kwiatek]

These test show how far from RL data are CLOD Spitfire MK II up to 20 000 ft, not even mention that above 20 000 ft difference will be even more.

FSX flight model engine is not so good so i think it is not really good base for test.

I'm really impressed with DCS engine and how they manage to model P-51. It is very close to RL data and flight model is also very good ( much better then CLOD and sometimes it seemed to be more difficult then IRL ).

[ACE-OF-ACES]

Originally Posted by trademe900

Yes, very funny...

What can I say.. It's a gift!

Originally Posted by trademe900

but I'm sorry, there is no denying the climb rates are appallingly slow.

Don't be sorry, because no one is denying the aircraft performance is poor at high altitudes, in that even 1C (Luthier and BS) said a long time ago that the performance is poor at high altitudes due to limitations in the FM. Which I find hard to belive and is just a cop out IMHO to explain why they are not going to put any more effort into fixing the FM

Originally Posted by trademe900

The plane is basically not even in a state of flight up there. Above 10,000k the time to height vs real life just plummets through the floor.

Good luck getting to 20k in 7 mins in cod spit! Hurricane will get there faster

Than the new patch made things worse, because that was not the case in the previous patch, performance drop didn't occur until you got to around 15kft and it was not as bad as you described. That or your doing something wrong, but we will never know for sure because you did not make use of one of the C# scripts to record and log your data during flight.