True Altitude?

[Soldier_Fortune]

Originally Posted by KG26_Alpha

If the air density has been changed in v4.11 then perhaps the bombs are affected giving the long drop syndrome were seeing since the patch.


A recalculated table would be needed for the game.


But the standard real world calculation should apply.

In one hand, the IAS/TAS charts and tables made by some players several years ago (before the patch 4.11 was released), now are totally useless because the simplified model of the air included in the game considered a constant free air temperature = 0ºC at any altitude for all maps.

In the other hand, we would need an IAS/TAS chart for each map, since the most of them have different Ground Level temperatures (GLT), being this GLT the starting point for any calculation about TAS... but that would be a too hard work for anyone. Perhaps the interested players should have their own E6-B flight computer, but perhaps not all the interested players would afford 10 or 12 U$D for the cheapest models.

With 'no wind' TAS depends of the altitude and the free air temperature, and this data is used as a setting for the bombsight. As far as I tested, the free fall bombs are not affected by the air density in a different way than the aircrafts and, if you use the right TAS, your bombs should hit the selected targets.

But if in your mission the designer has included any wind, this adds a new problem since the TAS and the Ground Speed (GS) has not the same value, being this GS the parameter needed for to set the bombsight up, and not the TAS (before the patch 4.10 the TAS was the velocity for the bombsight because when wind_speed = 0, then GS = TAS).

This problem may be solved again with an E6-B computer in the simplest fashion, being the other ways (involving several manual calculations each time) too complex and too boring for the most of the players.

In any case, this affects almost all what we've learned and known about level bombing up to the patch 4.09.

But the standard real world calculation should apply.

I'm agreed with you.
Now I know the effect of the wind, the altitude and the free air temperature on the TAS and the GS, how to calculate them in an easy, funny and realistic/historical fashion, and how to use them into the sim.

But also I need to know if the True Altitude (regarding of the free air temperature) has been modeled and if it should be used instead of the Indicated Altitude for to calibrate the bombsights.