Ar 234 divebombing sight... how to use?

[ACG_Bussard]

Here´s a descripton how to bomb with the StuVi / BZA in english, which I found in the wilderness. Additional informations about the source is unknown. 

 

and with reference to: 

 

 

Edited July 1, 2022 by 2./JG3_Bussard*
added the Sturzvisier targeting schematic

[=KG76=flyus747]

On 6/16/2022 at 4:58 PM, belphegor4 said:

OK, I finally found the bombsight instruments.  They're on the left console at the far back, behind your left elbow (attached screenshot, circled in red).  From outboard to inboard, they are the true airspeed setting, the target altitude setting, and the contact altimeter.

 

True airspeed setting:

This is controlled with the "Gunsight range adjustment / Bombsight: wind speed" keys (in Weapons controls section), default is RAlt-Semicolon/RAlt-Period.  Note that the aircraft specifications page for the Ar 234 currently gives the wrong keys for this (says RShift instead of RAlt)!  Also very confusingly, when you change this setting the techchat message says "Bombsight: wind speed" with values ranging from -100 km/h to 100 km/h, although the knob is clearly labeled from 400-800 km/h, so that's why I didn't think it was working...  Although the scale on the knob looks non-linear, it seems like it divides evenly into the techchat numbers, so -100 km/h in tech chat = 400 km/h on the knob, -75 km/h = 450 km/h, -50 km/h = 500 km/h, etc.  The default is 0 km/h in tech chat, therefore 600 km/h on the knob, which probably accounts for the sporadic accuracy I've had.

 

Target altitude setting:

This is controlled with the "Gunsight vertical adjustment / Bombsight: target height" keys (in Weapons controls section), default is RShift-Semicolon/RShift-Period.  This one works as expected and the techchat has the right label and values that match the knob.

 

Contact altimeter:

The all-white needle shows your current altitude and the white-and-red needle shows the set "contact" altitude.  This is controlled with the "Contact altimeter: target altitude increase" and "Contact altimeter: target altitude increase" keys (in the Plane controls section), default is RShift-K and RCtrl-K.  The altimeter needle shows your altitude relative to either "Standard atmosphere" or "Nearest friendly airfield elevation", same as your main altimeter; you can change the reference with the "Altimeter: reference pressure toggle" key (Plane controls section, default is LAlt-A).  I believe it works like the contact altimeter in other planes that have them (e.g. Ju-87) in that as you approach the set altitude, the buzzer starts, and when the buzzer stops it means you're at the set altitude.

 

So now that I may have a handle on the controls, one thing I want to experiment with is using the fancy new autopilot to stabilize my plane in a steady dive toward the target.  That should allow me to get to a stable speed and set it into the bombsight, and I can make fine left/right adjustments with the autopilot yaw channel.  Now all I have to do is figure out some way to reliably get the target height above sea level...

use the editor to obtain target elevation and huge thank you for brining up the autopilot for BZA. That solves the lateral problem.

[YoYo]

I'll wait for a patch with correct textures inside, after this I'll trening how to use it. We have many new materials in this topic, thank you :)!

[Pozsgay]

On 6/17/2022 at 1:58 AM, belphegor4 said:

Now all I have to do is figure out some way to reliably get the target height above sea level...

Google Earth Pro shows the proper height above sea level. I think the maps in Il-2 are accurate (a few meters difference does not count).

[ACG_Bussard]

Found that in a good hidden corner of the world wide web. It´s an official illustration for the Ju 88 A-4 and A-5 regarding divebombing by the BZA-1.  Sorry, couldn´t found it in better quality and resolution (can´t read and translate all small details or identify all dials). Maybe it´s helpfull for you, to understand by the pictures what to do when "glide bombing" in the Ar 234.

 

P.S. Would love to have that illustration in good quality. If anybody have a copy in a better quality on his hand, please PM me.

 

[ATAG_SKUD]

How about a Requiem video on the Stuvi?

skud

[ITAF_Airone1989]

https://youtu.be/VrkQC7Lr7Pg

[ACG_Bussard]

On 6/28/2022 at 12:27 PM, Bussard* said:

Found that in a good hidden corner of the world wide web. It´s an official illustration for the Ju 88 A-4 and A-5 regarding divebombing by the BZA-1.  Sorry, couldn´t found it in better quality and resolution (can´t read and translate all small details or identify all dials). Maybe it´s helpfull for you, to understand by the pictures what to do when "glide bombing" in the Ar 234.

 

P.S. Would love to have that illustration in good quality. If anybody have a copy in a better quality on his hand, please PM me.

Finally I had luck and found at the German Federal archives (Bundesarchiv) the high resolution versions of the official illustrations.

 

Please note that the mentioned airspeed governor (VE-Geber) is optional and not simulated in the Ar 234 and Me 410.

Edited May 3, 2023 by Bussard*
typo

[Hoss]

 

[ACG_Bussard]