Why don´t these figures match up?

[ZaltysZ]

IAS will be equal to TAS at sea level only at certain air pressure and temperature. If present conditions are different (like you are flying on hotter/colder day), TAS and IAS will be different even if you are almost "surfing" the waves in your plane.

[MusseMus]

Originally Posted by ZaltysZ

IAS will be equal to TAS at sea level only at certain air pressure and temperature. If present conditions are different (like you are flying on hotter/colder day), TAS and IAS will be different even if you are almost "surfing" the waves in your plane.

Yes thats right but I don't have the time and skill to calculate them My point was that it seems like there is quite a big difference between the speed gauge in the spit and 109. Countless posts on this forum complain about the spit is going too slow in level flight and most of them draw this conclution from the speed gauge alone. I'm not saying they are wrong, but reading the speed gauges gives the impression that a 109 is travelling much faster than a spit, even if they are flying side by side.

[NaBkin]

Originally Posted by MusseMus

Yes thats right but I don't have the time and skill to calculate them My point was that it seems like there is quite a big difference between the speed gauge in the spit and 109. Countless posts on this forum complain about the spit is going too slow in level flight and most of them draw this conclution from the speed gauge alone. I'm not saying they are wrong, but reading the speed gauges gives the impression that a 109 is travelling much faster than a spit, even if they are flying side by side.

You're right. This isn't a IAS/TAS issue (if TAS or IAS — neither give the expected values in the calculation and it's only a few % difference in this low altitude on a regular day anyway).

Also it's not an FM issue because even with a completely wrong FM (say if you do the calculation with the "FM" of a juggernaut, you should get the expected values).

So I'm getting the feeling that the speed gauges in CloD are a mess. It seems that they show an incorrect (too slow) speed.
15% too slow for the Spit and 5% too slow for the 109.

If you think further and considering the numbers MusseMus brought up a few posts earlier, the FM of the Spitfire actualy could be 15% faster than the gauge indicates and the Me109 would be arround 5% faster.
Maybe it's "just" an issue of incorrect display of gauges rather than incorrect FM Should be very easy to fix I suppose...

[MusseMus]

Originally Posted by NaBkin

Maybe it's "just" an issue of incorrect display of gauges rather than incorrect FM Should be very easy to fix I suppose...

If this is the case it would be quite hilarious
Or maybe the FM's are in fact wrong, but not as much as one would think reading the speed gaugets.
Or maybe my test is flaud I would very much like to see if others get the same results.

[jf1981]

Originally Posted by NaBkin

So I'm getting the feeling that the speed gauges in CloD are a mess. It seems that they show an incorrect (too slow) speed.
15% too slow for the Spit and 5% too slow for the 109

Hi

Possible, I noticed some variant of the Spit had completely false vertical speed indicator, I had to rely on altimeter for vertical speed tests of the current model. The gage was away from 25 to 50% depending upon altitude.

I do not think I have made any mistake, so the gage must be false. More people testing on those kind of issue should make for more consistency of those facts.

[IvanK]

Originally Posted by jf1981

Hi

Possible, I noticed some variant of the Spit had completely false vertical speed indicator, I had to rely on altimeter for vertical speed tests of the current model. The gage was away from 25 to 50% depending upon altitude.

I do not think I have made any mistake, so the gage must be false. More people testing on those kind of issue should make for more consistency of those facts.

In the many climb tests I have done I have also found the RAF VSI overeading in the climb when compared with Altitude change versus time.

[SlipBall]

Originally Posted by NaBkin

Hi folks,

I´ve been doing some tests for navigation. Basically I wanted to figure out the time I have to fly for a certain distance.

So I did this test in QMB (no wind, 100 meters hight):

Time: 3 minutes (0.05h)
Speed: 250 Km/h IAS (with this low alt and speed TAS/IAS shouldn´t make a big difference I guess)

So after the math is done (250km/h x 0.05h) the flown distance should be exactely 12.5 Km

I did the test several times with several planes and everytime the actual flown distance is 14,5 Km (that indicates a speed of somewhere around 285 Km/h).

Does anyone know where I did the mistake or is just some of the tools in the game broken (Speed gauge or distance meassure on the map)?

Thanks for help!

Originally Posted by MusseMus

Which aircraft did you use?
The reason I ask is because in a test made in another thread (http://forum.1cpublishing.eu/showthread.php?t=34115) the results shows that the Spitfire in COD is roughly 14% slower than real life.

Since your figures show a 14% speed gauge error, it's tempting to suspect it's accually the speed gauge in the spit thats porked, not necessarily the FM

But it might just be a coincidence

/m

Originally Posted by NaBkin

You're right. This isn't a IAS/TAS issue (if TAS or IAS — neither give the expected values in the calculation and it's only a few % difference in this low altitude on a regular day anyway).

Also it's not an FM issue because even with a completely wrong FM (say if you do the calculation with the "FM" of a juggernaut, you should get the expected values).

So I'm getting the feeling that the speed gauges in CloD are a mess. It seems that they show an incorrect (too slow) speed.
15% too slow for the Spit and 5% too slow for the 109.

If you think further and considering the numbers MusseMus brought up a few posts earlier, the FM of the Spitfire actualy could be 15% faster than the gauge indicates and the Me109 would be arround 5% faster.
Maybe it's "just" an issue of incorrect display of gauges rather than incorrect FM Should be very easy to fix I suppose...

Yes I found gauge is in error too, just wondering if one of you started a bug tracker that I could cast my vote.

[NaBkin]

Whats a bugtracker?
Sorry for my bad knowledge...

[SlipBall]

Originally Posted by NaBkin

You're right. This isn't a IAS/TAS issue (if TAS or IAS — neither give the expected values in the calculation and it's only a few % difference in this low altitude on a regular day anyway).

Also it's not an FM issue because even with a completely wrong FM (say if you do the calculation with the "FM" of a juggernaut, you should get the expected values).

So I'm getting the feeling that the speed gauges in CloD are a mess. It seems that they show an incorrect (too slow) speed.
15% too slow for the Spit and 5% too slow for the 109.

If you think further and considering the numbers MusseMus brought up a few posts earlier, the FM of the Spitfire actualy could be 15% faster than the gauge indicates and the Me109 would be arround 5% faster.
Maybe it's "just" an issue of incorrect display of gauges rather than incorrect FM Should be very easy to fix I suppose...

If true that would be funny, and explain a lot.

[NaBkin]

Originally Posted by SlipBall

If true that would be funny, and explain a lot.

Yeah, and now how can we let know Luthier and his team about this...