Blohm & Voss P.208

[kiradog]

Do not think i have posted these in past.

 

[Wurger]

No, you haven`t! What a thrill!!!

 

[Zizi6785]

Great post!

I have never seen before the p.208-01-01!

Do not think i have posted these in past.

 

[XP67_Moonbat]

Paging Newsdesk Dan!

 

[newsdeskdan]

Some fantastic design sketches there! Must be a ton of Blohm & Voss material out there still waiting to be discovered...

 

[Zizi6785]

I made an approximate sketch of P.208.01

 

[Vladimir]

I made an approximate sketch of P.208.01

Good work, Zizi6785 !

 

[Zizi6785]

Comparison of the three versions:

 

[Vladimir]

Hi,

(pictures from http://live.warthunder.com/feed/?q=%23paperplane )

 

[hesham]

Nice work Zizi and Vladimir.

 

[Vladimir]

This is not my 3-d work

 

[blackkite]

Hi!
"P 208.01
A variant fitted with a Junkers Jumo 222 E, F or N engine.

P 208.02
A variant powered by an Argus As 413 unit giving a maximum of 4.000 PS (made of two Junkers Jumo 213 engines). The plane had a larger radiator and the wingtip booms had small vertical fins at the trailing edge.(Single propeller!?)

P 208.03
Three proposals were made for this variant: P 208.03.01 and P 208.03.02 would be fitted with a Daimler-Benz DB 603L engine, while P 208.03.03 would have a Daimler-Benz DB 603N. The dimensions were similar and there was also almost no difference in weight between the three projected aircraft."

https://en.wikipedia.org/wiki/Blohm_%26_Voss_P.208

 

[blackkite]

Hi
Ju288 with Jumo222 engine and Jumo 222 engine.

 

[blackkite]

Justo-san's excellent drawing.
By this super drawing, We can easily imagine engine exhaust nozzle shape for P.208.01, 02 and 03.

 

[Justo Miranda]

Wagnerian manga by Ted Nomura.
Alternate Wars, Antarctic Press

 

[Justo Miranda]

Some especulative stuff for modellers

 

[blackkite]

Super drawing Justo-san. This is what I want to see. Thanks a lot.
But this drawing for P.208.02 with Argus As413 engine seems to be a original one with single propeller. :-[

 

[blackkite]

I imagine that P.208 design had engine cooling problem at low speed/zero speed condition.
I think that to solve this problem, P.208 had a natural draft cooling tower style vertical duct for radiator cooling air to promote natural convection.
Or can you see forced cooling fan and drive shaft located front part of the radiator cooling air intake?
Newsdeskdan-san, if you please, show me the original p.208.03 plan view?
Radiator cooling air outlet nozzle is located upper side of the fuselage?

Model.
http://www.inpayne.com/models/luft46/bv208a.html

 

[blackkite]

This drawing shows P.208.01 with Jumo222 engine. Radiator was located bottom of the fuselage.
Perhaps engine cooling at low/zero speed was the problem.
So B&V changed the radiator design from P.208.01 style to P.208.03 style? ;D

 

[Justo Miranda]

Jumo 222 and Argus As 413 probably with internal cooling fan system external radiator and contraprop.
DB 603 with external fan and internal radiator.

 

[blackkite]

Thanks a lot Justo-san. Great drawings as usual!
Engine exhaust nozzle is located wing trailing edge?
So this drawing and model are mistake?

 

[blackkite]

Some especulative stuff for modellers

Justo-san, I can't find radiator cooling air outlet nozzle in your P.208.02 drawings. :-[

 

[foiling]

Justo, your artwork is exquisite, as always. Thank you.
Neville Giloi

 

[blackkite]

http://www.luft46.com/bv/bvp208.html

"The BV P.208.03 was the final design for a series of tailless aircraft designs by Blohm und Voß. A single Daimler Benz 12-cylinder DB 603L engine with a two-stage supercharger (2100 HP with MW 50 methanol-water injection) was imbedded within the fuselage aft of the cockpit. The engine drove a pusher propeller and was fed by an air intake located on the starboard side of the fuselage, with the radiator mounted beneath the fuselage."

 

[Justo Miranda]

Justo, your artwork is exquisite, as always. Thank you.
Neville Giloi

 

[Justo Miranda]

Some especulative stuff for modellers

Justo-san, I can't find radiator cooling air outlet nozzle in your P.208.02 drawings. :-[

Here

 

[Justo Miranda]

http://www.luft46.com/bv/bvp208.html

"The BV P.208.03 was the final design for a series of tailless aircraft designs by Blohm und Voß. A single Daimler Benz 12-cylinder DB 603L engine with a two-stage supercharger (2100 HP with MW 50 methanol-water injection) was imbedded within the fuselage aft of the cockpit. The engine drove a pusher propeller and was fed by an air intake located on the starboard side of the fuselage, with the radiator mounted beneath the fuselage."

Radiator mounted inside the fuselage

 

[blackkite]

Some especulative stuff for modellers

Justo-san, I can't find radiator cooling air outlet nozzle in your P.208.02 drawings. :-[

Here

Oh I see. I wonder that main landing gear interfere with air flow and why so long air duct need?

 

[blackkite]

http://www.luft46.com/bv/bvp208.html

"The BV P.208.03 was the final design for a series of tailless aircraft designs by Blohm und Voß. A single Daimler Benz 12-cylinder DB 603L engine with a two-stage supercharger (2100 HP with MW 50 methanol-water injection) was imbedded within the fuselage aft of the cockpit. The engine drove a pusher propeller and was fed by an air intake located on the starboard side of the fuselage, with the radiator mounted beneath the fuselage."

Radiator mounted inside the fuselage

I can't find radiator at this position in the original side view drawing. :-[ I think that radiator is located fuselage bottom, I can see some device here in the original side view drawing.
I imagine that the objective of this little complicated radiator system are as follows.
(1) To realize small air intake for low drag by fan.
(2) To realize small fan driving power by utilizing natural convection force(air suction force same a chimney) generated by vertical large air duct.

If vertical duct length after radiator becomes long, natural convection force becomes large.
So it desirable that radiator position is low.

Justo-san, if you please show me the reason why engine exhaust nozzle is located wing trailing edge. ???

 

[Justo Miranda]

Cooling system patent Blohm und Voss for the BV 155

 

[Justo Miranda]

Justo-san drawings
Source Monogram Close-up

 

[blackkite]

I forget to tell you one more my opinion for the objective of P.208.03's little complicated radiator system as follows.
(3) Counter measure for engine overheat at zero/low speed condition.

http://www.secretprojects.co.uk/forum/index.php/topic,26136.15.html

 

[blackkite]

Justo-san drawings
Source Monogram Close-up

Great work Justo-san.
Of course I will get this book.

 

[negoshi8or]

Do not think i have posted these in past.

Hi KiraDog! I know I am digging up an old post... but wow! Those are some fantastic scans. A decade ago I was chasing these in the forum and online. I also went and got the three roles of microfiche from the NASM archives "Captured German and Japanese Air Technical Documents Collection" on the P208 family. Pages and pages of calculations and tables... but no drawings! Where on this good earth did you find them? I return after many years of waning and here they are

Thank you very much for sharing!! Now I have time, a 3D printer, a laser cutter, and taught myself 3D modelling I can get busy making this fly. Happy days ahead!
I should have checked in 6 months ago when lock down here in Aus started...

Really - thank you Kiradog for sharing. And thanks to Justo for his books also! It's nice to know about the more compact P208.1 variant as well!

 

[Ian Allen]

Wagnerian manga by Ted Nomura.
Alternate Wars, Antarctic Press

What manga is it looks really neat

 

[newsdeskdan]

In addition to the Blohm & Voss P 208.03, it turns out there's actually a P 208.03-01 (drawing dated October 4, 1944) and P 208.03-02 (drawing date unclear) as well. The former is similar to the base P 208.03 but with a teardrop canopy and fuselage scoops to the rear. The latter has wing-root radiator intakes. I'll no doubt get around to publishing the original drawings at some point.

 

[Ian Allen]

Wagnerian manga by Ted Nomura.
Alternate Wars, Antarctic Press

What comic did you get the images from thanks looks neat.