Junkers Ju 87 - Development, Variants , Related Projects

[Tonton-42]

Here is an interesting overlay - my digitization of the Ju 87 airfoil from the Russian document, overlaid on a Ju 52 airfoil that I found measurements for in

https://www.fzt.haw-hamburg.de/pers/Scholz/arbeiten/AufgabeTaschner.pdf

BTW, this thesis contains an error - the Ju 52 flap is normally 2.5 deg nose down, not 0 deg.

Yellow is Ju 52, magenta is Ju 87. The coordinates are on a unit chord, to allow an overlay. As you can see, the airfoils are related, but not the same.

If I may add that this information can only be partial because I suppose it is the root profile, apart from the thickness of the profile which varies up to the salmon of the wing, its coordinates change most of the time. Ex. B-29 extreme wing airfoils ...Camber is crucial and can be scalable !..

 

[HoHun]

Hi Tonton,

If I may add that this information can only be partial because I suppose it is the root profile, apart from the thickness of the profile which varies up to the salmon of the wing, its coordinates change most of the time. Ex. B-29 extreme wing airfoils ...Camber is crucial and can be scalable !..

I suppose the tip airfoil is also shown on the Russian diagram ... the caption is illegible, but you can see the washout consistent with the separate washout diagram. (Now that I think about it, one could probably calibrate the aspect ratio of the perspective-corrected diagram with that information.)

What is "salmon of the wing", by the way? I read this as "tip airfoil", but that was only a guess!

Regards,

Henning (HoHun)

 

[Tonton-42]

Hi Tonton,

If I may add that this information can only be partial because I suppose it is the root profile, apart from the thickness of the profile which varies up to the salmon of the wing, its coordinates change most of the time. Ex. B-29 extreme wing airfoils ...Camber is crucial and can be scalable !..

I suppose the tip airfoil is also shown on the Russian diagram ... the caption is illegible, but you can see the washout consistent with the separate washout diagram. (Now that I think about it, one could probably calibrate the aspect ratio of the perspective-corrected diagram with that information.)

What is "salmon of the wing", by the way? I read this as "tip airfoil", but that was only a guess!

Regards,

Henning (HoHun)

Dear Henning,

The "salmon" is red on this MH-152 Broussard. I used Reverso for translation but it wasn't a good idea !

Un petit dessin vaut mieux qu'un long discours ... (Napoléon)

Tonton

 

[xpeace]

The siren

Is there more information on the initial bearing mechanism available? The second image looks like there once had been a description?

 

[Justo Miranda]

Is there more information on the initial bearing mechanism available? The second image looks like there once had been a description?

No

 

[blackkite]

View: https://www.youtube.com/watch?v=i9rSUl6iHJM

 

[blackkite]

Hi!

1/48 - Junkers Ju-187 Super Stuka by Amusing Hobby - 3D renders - release in ?

Amusing Hobby is to release a 1/48th Junkers Ju-187 Super Stuka kit - ref. 48A004 Source: https://tieba.baidu.com/p/7178046448 V.P.

www.britmodeller.com

Junkers Ju 187

It would be great to have the Super stuka in game. General characteristics Crew: 2 Length: 11.8 m (38 ft 9 in) Wingspan: 18.06 m (59 ft 3 in) Height: 3.9 m (12 ft 10 in) Powerplant: × Junkers Jumo 213A V-12 inverted liquid-cooled piston engine, 1,324 kW (1,776 hp) for take-off (1750 PS) 1,100 kW ...

old-forum.warthunder.com

SimplePlanes | Junkers Ju-187/287

PC and mobile game about building airplanes.

www.simpleplanes.com

 

[jcf]

And this is the Ju 187 (see below), about which very little is known. It's really not clear how this fin was supposed to work.​

View attachment 656107

That looks like a Ju 87 windtunnel model that was modified to test the aerodynamics of the proposed configuration. The regular vertical fin and rudder have been simply been moved to the bottom of the fuselage, note that the horizontal stabilizer struts are still affixed.The fixed landing gear has been removed and the cowling reshaped. The vertical fin and rudder of the model not being intended as an accurate physical representation of the movable assembly, just a stand in used to determine possible effects on stability and drag when in the lowered position. Rebuilding an existing windtunnel model isn't unusual.

 

[newsdeskdan]

That looks like a Ju 87 windtunnel model that was modified to test the aerodynamics of the proposed configuration. The regular vertical fin and rudder have been simply been moved to the bottom of the fuselage, note that the horizontal stabilizer struts are still affixed.The fixed landing gear has been removed and the cowling reshaped. The vertical fin and rudder of the model not being intended as an accurate physical representation of the movable assembly, just a stand in used to determine possible effects on stability and drag when in the lowered position. Rebuilding an existing windtunnel model isn't unusual.

Seems like a plausible explanation to me.