Density Altitude and Aircraft Handling Question???

[swareiam]

Does anyone know if the density altitude is consistent from map to map as well as geographically within each map? If not is there somewhere you can get the current barometric pressure. So you can fiqure out whether the ground is going to met you a lot faster in the map that you are in. I've noticed some sutble changes in flight chacteristics in the Typhoon for which I though I had a handle on around sea level. But I have been surprised it seems during a map change or two. Typhoons don't fly well with flaps deployed, so timing loops and pulling out of dives at the right time is critical in ground strikes or any other low activity in that aircraft. Odd behavior to say the least. Any input would be helpful.

Thanks chaps...

[Krusty]

The density of the air at sea level is the same at all sea levels (on all maps). Above sea level the density falls off appropriately.


Interestingly enough, though, I asked an interesting question once. I asked if it would be possible to make a map with super dense air, as in make the terrain at -5000 feet, or something, and would it make for challenging gameplay. The answer was they do not model it below sea level, sea level pressure extends forever downward.

I admit my request was rather gimicky, but I was more curious for novelty reasons. The answer was nice to know.


P.S. The split flaps on the typh are really not very good. They also seem to cause a lot of instability (probably because of the massive torque).

[beddog]

29.92 above 10,000 feet.............    oops sorry... that's real life.   


Temperature is part of the density altitude equation and with no mixture control and auto take off and the like, I highly doubt if HT is programming all that into the game, not to mention making it vary from area to area.

[Stoney]

Changes in the density of air as alititude increases are modelled as indicated by varying IAS at different altitudes.  I don't know for sure, but suspect everything is treated as standard day with respect to temperature from surface to sky high.  So, in AH, I'm pretty sure DA = absolute altitude

[Krusty]

Somebody at HTC even said the temperature that AH has permanently modeled. I don't recall what it was, but I'm sure some forum searches will yield it.

[Stoney]

Somebody at HTC even said the temperature that AH has permanently modeled. I don't recall what it was, but I'm sure some forum searches will yield it.

Standard temperature would be 59 degrees farenheight at sea level.

[gaiacidemusic]

29.92 above 10,000 feet.............    oops sorry... that's real life.   

It varies up to the flight levels, which in the states start at 18,000 MSL.  Once you get to FL 180, it's a constant 29.92.

[dtango]

AH models standard atmsophere which has the following properties:



You can find AH's speed of sound table posted by HiTech here:
http://bbs.hitechcreations.com/smf/index.php/topic,192919.msg2244590.html#msg2244590

The AH speed of sound table matches the speed of sound in the graph above.  Temperature affects the speed of sound and air density which implies that the AH air density is also based on standard atmosphere.

Cheers!

Tango, XO
412th FS Braunco Mustangs

[beddog]

It varies up to the flight levels, which in the states start at 18,000 MSL.  Once you get to FL 180, it's a constant 29.92.

oops.. I meant to say 29.92 from ground to 10,000 is the rule of thumb.  Actually you set it for the airport elevation on the ground and it'll tell you what the pressure is at that moment. btw nothing I'm flying is going to
fl 180......

[LilMak]

It varies up to the flight levels, which in the states start at 18,000 MSL.  Once you get to FL 180, it's a constant 29.92.

FYI that's not the actual pressure but just an altimeter setting to make cotpit managment easier and ensure everyone is on the same page (ie not going to hit each other because of improper on neglected altimeter settings in the high stratums).