He 111 Bombing Sight problem

[SG1_Lud]

Thank you Volker.

Yeas , sorry I forgot to comment that. In the test I have done, the crosshair in the final moments drifts off, but I learned to "ignore that": if in the first seconds the thing is stable, I consider it a valid solution and forget the crosshair, because the thing (maybe realisticly?) doesn't fixates perfectly.

Maybe you can try with another human?. If you see me online (mi nick there is Lud, dont hesitate to ask, maybe we can have some fun and learn something)

[Blackdog_kt]

Haven't really seen much on the He111 because when i tried it i was still having performance issues with the sim, i didn't know the engine operating limits that well and broke my engines, plus i was also trying to figure out the course autopilot because i was doing it solo in offline mode.

What i can tell you though is that weird things seem to happen to the Blenheim too. While waiting for a hotfix to correct the prop pitch issue on the 109/110 i decided to fool around a bit in the Blenheim yesterday, so i started a free flight mission from the QMB with a load of four 250lb bombs and the detonator that's armed by default.

That mission spawns you near Dover, so i just went across the channel to bomb an airfield in Calais. I flew low, about 3000ft, which makes the IAS/TAS conversions almost non-existent. I kept my airspeed and altitude steady, input the values to the bombsight and had a go.

The bombs impacted and exploded just fine, but about halfway before the release point and the target.

That being said, this test is not really conclusive because i don't know if and how strong a wind exists in that mission. What i'm going to try next is make a "recon" run at tree top level to see the altitude of the Calais coast relative to sea level. I have a feeling that those cliffs could be as much as 500-1000ft high and this considerably throws off the aim, since we need to use altitude over the target in the bombsight and not mean sea level (MSL) altitude.

[SG1_Lud]

In my test in the He-111 I rapidly came to the conclussion that trying to bomb from the bombardier position and being accurate at the same time is highly difficult. Let alone making serious test while we don't have a way to release the bombs while looking thru' the sight. So it is not a comfortable secnery for testers, tos ay the least.

The way in tthat IL2 1046 calculated ballistics, as is known, wasn't taking in account the friction in the air, nor winds, unless you were modded. For that reason one could put the sight to 0 degrees and watch the bombs from release to impact, that is, the horizontal speed of the bombs was nearly constant.

But here we have new variables that affect the values we need for the equations:

Height of the plane (depends on altitude of the plane, altitude of the target) and altitude of the plane (depends on T,P)
TAS (depends on IAS, T, P)
and then GS (depends on TAS, wind)
bomb aerodynamics (depends on an aerodnynamic coeff.)

T: can be established for a test, using the planes that can measure outside temps
P: ? FMB?
wind: ? (dont know if it can be user-programmed in FMB)
bomb friction coeff: ?

Too much efforts for trying to reverse engineering the code, and give some quality observations to the devs. Furthermore, at the current state of the sim I think they have other priorities...


In the meantime, what I did is "learn" by trial and error to bomb from the pilot position. I noted several reference points in the down-view of the pilot for releasing at different altitudes. I use always the same setting in the engine, for a IAS of 250 km/h.

The sweet spot for the He-111 as per the manual (and I could confirm it is well done in the sim) are

Altitude: 3.000 m
IAS = 250 km/H
Corresponds to ATA = 1.0 and RPM = 2200, compressor stage II.