it probably much like Stuka Max speed.
Very hard to reach 390kph with max bombload on deck.
But climb to 1K then dive to 450kph and it will slow to 390kph and hold this for almost ever.
i had a car like this (old crap) was so slow in 5th gear it could only reach 110km/h on flat motorway but if i down shifted to 4th gear accelerated to 140 then put it in 5th it would slow to about 130kph and hold this speed.
IAS is the measure..
There is no gauge in a ww2 plane that measures ground speed they are all based on air speed
Ok.. I just read something stating Airspeed=Groundpseed on day with no wind. so Im editing my previous statement. But also stated AIrspeed = groundspeed minus windspeed.
I glanced over it but I didn't even see mention of the effect of air density with altitude. But I have read other things that describe forumlas to calculate their effect.
So, perhaps chucks guide is on a day with no wind. But with a bunch of math im not very familiar with,ias becomes slower than groundspeed with lower air density @ altitude and given windspeeds.
Perhaps try a fighter in quick mission starting at 6000m prior to the introduction of BoM/BoK and fill us in on your experience at sustainable max speed in level flight at 6000m? The stuka has no such speed chart in Chuck's guide >.< And I've only seen charts for planes from BoS
And while true we have no visual gauge in a ww2 fighter for CAS/TAS/Groundpseed, if I read correctly it was around this time that we began to get a better understanding of the effects of speed and airflow at altitude and began to develop formulas for calculating CAS/TAS/Groundspeed using just math alone.. which just requires a brain, or the ability to communicate with someone who has access to measurements of windspeed who might have a piece of paper and a pen.. or a calculator. I at least get that groundspeed is used mostly for drafting flight plans.
Not knowing the math... my experience with altitude and flying = being in an su-27 or f-15c in DCS world contrailing at 30 thousand feet (around 9144m) struggling to keep above 350-450knots (been awhile..i'd have to check) IAS without burners. If I remember correctly there was a way to display TAS as opposed to IAS. Kicking on the burners and beginning a shallow dive, you also notice how you break the sound barrier at lower IAS and higher altitudes (lower temperatures)
http://www.fighter-p...om/jetmach1.htm (not going to try to say I'm smart enough to determine how accurate that webpage is, however - it does show the effect I'm discussing)
Different era of plane..different sim tho. So I'm just as confused as the OP.. still wondering if he's found any answers for himself.
Just fyi Shadow I am by no means trying to argue with you or expect you to go thru this extra work..but I'm still feeling uncertain and the OP has peaked my interest in obtaining clarity. I'm going to do as you suggested and climb higher and try to dive into speed and see how long i can maintain it.
At lower altitudes I personally don't feel a struggle trying to obtain higher IAS.
Edited by headwarp, 12 February 2017 - 22:15.