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German V/STOL transport/passenger projects

Michel Van

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Matej said:
This is the front landing gear door of the Do-31. Was the illustration of the road runner always there? If so, does anybody know why?
this illustration is on Dornier Do 31 E3, D-9531 at Flugwerft Oberschleißheim near Munich.

on the Cockpit is on right side the lettering "WOOD" with two OO as cartoon eyes

that's stands for Drury W. Wood a US Testpilot, so the road runner and Cartoon eyes on D-9531 make sense now

source:
http://www.do31.de
http://thetartanterror.blogspot.com/2006_02_01_archive.html
Picture
http://igor113.livejournal.com/134992.html
 

Michel Van

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I have question about Do-31E
was that the final version of the Aircraft ?
or had the production version look more like this:





or this: Do 131 ? (if Do 131 is production version of Do 31)
 

Stargazer2006

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Could it be there were several Do 131 variants? The one that was pictured earlier in this topic appears in a NASA document as the "Do 131A", not just plain Do 131...
 

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Michel Van

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Stargazer2006 said:
Could it be there were several Do 131 variants? The one that was pictured earlier in this topic appears in a NASA document as the "Do 131A", not just plain Do 131...

I found information about that
There DO 131 A and B version
It use Turbofan Lift engine and High bypass cruise engine, no use of the Pegasus VTOL engine !


Do 131 A Military VTOL Transporter
14x Rolls-Royce RB.162-81 Jet Lift engine (7 in each wing pod)
2x Rolls-Royce RB.168-25-38 Cruise engines.
Cruise Speed: 850 km/h ( 528 mph)
Wingspan: 24,82 m (81.42 ft)
Wing area: 88,0m2 (947 ft2)
Length: 24,6 m (80.71 ft)
Height: 8,0m (26.21 ft)
Max STO weight: 41000kg (90400 lb)
Design VTOL weight: 37630 kg (83000 lb)
Payload: 4900 kg (10800 lb) with range of 925 km. (max 7250 kg)


Do 131 B Military VTOL Transporter
the Lift engine pod are removed, for increased Payload
or are replace by fuel tanks for more range
Payload: 7100 kg (15700 lb) with range of 925 km.


Other version based on Do 31
DO P378
Civilian V/STOL

10x Rolls-Royce Jet Lift engine (5 in each wing pod)
4x Rolls-Royce Lift/Cruise engines (Pegasus ?).
Cruise Speed: ?
Wingspan: 24,82 m (81.42 ft)
Wing area: ?
Length: 32,1 m (105,31ft)
Height: 7,3 m (23.95 ft)
Payload: ?





Do 231 Civilian version
80-100 passenger VTOL / transporter projected for late 1970s




12x Rolls-Royce Jet RB.202-25Lift engine (4 in each wing pod, 2 in nose, 2 in tail)
4x Rolls-Royce RB220 Cruise engines.
Max Speed: 900 km/h at 25,000 ft
Wingspan: 26,0 m (85.3 ft)
Wing area: 120,0 m2
Length: 35,55 m (118,8 ft)
Height: 9,55 m (31.3 ft)

Maxium altitude: 11100 m
Maxium climb: rate 13 m/s
Payload: 10220 kg or 100+4 passengers + 22,3 m3 baggage
Range: 800 km (500 mi)
VTOL range with half payload: 2460 km (1330 nm)
VTOL range with max fuel: 2790 km (1500 nm)
max VTOL 59000 kg (130075 lb)


Do 231 Military version
Height: 10,5 m
maxium altitude 10000 m
maxium climb rate 18,5 m/s
Payload 10000 kg
Max STO weight: 66900 kg
the Military version is equip with loading ramp

Source: http://www.aiaa.org/tc/vstol/unbuilt/index.htm
 

hesham

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Was this model,a V/STOL Germany design or not ?.
 

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Jemiba

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Judging shape and position of the lift-engine pods, the T-tail and the shape
of the nose and of the nacelles of the model in the background, it COULD be
something like a Do 131, but a clearer phot, or, as Michel already pointed out,
the source for the photo could tell us more .. ;)
 

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uk 75

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Could be either the production version of the 131 or a joint DH129 derivative with the UK?

Dornier went on to develop the 231 in the 70s but this has a longer nose.
 

richard

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The wing is something like the early Fw 260/300 ...
 

hesham

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My dear Jemiba,


I will remember the source,but I am sure,it was from a forum site.
 

overscan (PaulMM)

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From http://www.fzt.haw-hamburg.de/pers/Scholz/dglr/hh/text_2004_04_01_Senkrechtstarter.pdf


Second image was very small in PDF so I scaled it up.
 

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hesham

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hesham

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By the way,


I never heard about those Focke-Wulf designations before; FW.1271,FW.1272,FW.1273,
FW.1274,FW.1275,FW.1276,FW.1277 and FW.1278.
 

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Triton

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MBB HFB 600 Vertibus brochure

Messerschmitt-Bölkow-Blohm (MBB) HFB 600 Vertibus brochure found on eBay.

http://www.ebay.com/itm/MBB-HFB-600-V-STOL-Transport-Civil-Military-Brochure-c-1970-/141123609774?pt=UK_Collectables_Aeronautica_MJ&hash=item20db9f64ae

Attached images removed. Larger versions appear below.
 

Stargazer2006

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Re: MBB HFB 600 Vertibus brochure

When zooming in you get some slightly larger versions:
 

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Stargazer2006

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Three-view arrangement and specs of the Dornier Do 231C project, from:

NASA TT F-14076
THE VTOL JET FOR A FUTURE V/STOL TRANSPORT SYSTEM
by B. Huinink, K. B. Brink

Translation of "Das Senkrechtstartende Strahlflugzeug L. Rahmen Eines Zukuenftigen VSTOL-Transporvsystems," In:
DGLC Future Commercial Flight Technology [Verkehrsflugtechnik der Zukunft], Deutsche Gesellschaft für Luft- und
Raumfahrt, Cologne, West Germany, Proceedings of the DKI/R Symposium, Hamburg, 29 January 1970, November 1970, pp. 7-32.
 

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hesham

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Hi,


From Flugzeug Classic 2/2004,here is the Bolkow Bo.140 Model and Bolkow Bo.140M
military version.
 

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hesham

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Hi,


has anyone a drawing to HFB.351 Project ?.
 

hesham

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From the report;



Freifliegende, dynamisch ähnliche Modelle zur
Untersuchung komplexer Probleme des
Transitionsfluges von V/STOL-Flugzeugen, Teil 2


here is the Hamburger HFB.590 V/STOL transport project model,and a details for HFB.600.
 

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hesham

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From Flying Review 10/1964,


here is the early Dornier Do.31 Model.
 

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hesham

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Hi,


here is a Models for Dornier Do.31-1.


http://arc.aiaa.org/doi/abs/10.2514/3.43968
 

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hesham

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Hi,


here is a front view to early Dornier Do.31 version.


FR 8/1963
 

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hesham

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Hi,

Here is some Focke-Wulf buried propeller design aircraft.
 

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Triton

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Artist's impression of MBB Bo 140 civil version.

Source:
http://modernwartech.blog.hu/2016/10/09/vtol_60_6_resz_a_dornier_do_31_es_tarsai
 

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Triton

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Model of MBB HFB-600 Vertibus on display at Hanover Air Show 1970.

MBB HFB-600 Vertibus would use four wing-mounted GE 1/10JI turbojets as gas generators for lift/cruise fans beneath them. Four other Ge 1/10JI in fuselage are for lift.
"VTOL Aircraft Designs Shown in Hanover"
Aviation Week & Space Technology May 11, 1970 p. 61
 

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hesham

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hesham said:
here is a Models for Dornier Do.31-1.

http://arc.aiaa.org/doi/abs/10.2514/3.43968
By the way,there was Do.31 types E-1,E-2 & E-3.
 

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Winston

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This model looks like a intermediate design between the Dornier Do31E and Do31B (?). A similar drawing described as the Do31 Stage 3V has its horizontal stabilizer placed lower on the tail. https://www.secretprojects.co.uk/forum/index.php/topic,271.msg29491.html#msg29491

source: https://www.delcampe.fr/fr/collections/photographie/photos/aviation/957-photo-avion-aviation-a-identifier-416242602.html
 

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hesham

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Hi,

was those all a variants to Do-131 or not ?.

https://apps.dtic.mil/dtic/tr/fulltext/u2/672073.pdf
 

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hesham

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From Ali Nuove 5/1962,

the Focke Wulf VTOL transport model.
 

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AeroFranz

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Hahaha, i saw the first bounce and i thought "wow, that's a pretty high sink rate, they must really have a strong landing gear!"
cool video, thanks for posting.
 

Apophenia

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In Reply #46 (April 2012), hesham asked about a VTOL model. That image is attached here along with what is purported to be another angle showing the nose. These images were screen-grabs from the Polish TV science programme, Sonda (Ep. 196 Pteron). Source: http://impdb.org/index.php?title=Sonda

Although presented as two angles on the same test model, I'm not convinced.

The nose shot shows single orifices for propulsion engines with pods outboard for banks of lift-jets. A cruciform tail is also visible. The nose glazings have only a remote resemblance to those of the Do 31 ... but the basic shape is there for the Dornier. In contrast, the image that hesham posted show a single lift jet roughly half-way along each nacelle. So, not that much in the way of lifting power (STOL rather than VTOL?).

For hesham's shot, my first thought was an early take on the conventional-jet version of the Do 131B. The T-tail is right. The problem is the degree of sweep on the model's wings.

The Fw 260/300 and DH.129/DoHS-1 were alluded to. Again, I would point to the absence of outboard lift-jet pods. Still, the nacelles look about right and this model does seem to be a T-tail with all swept surfaces. So, perhaps, a more limited STOL variant of one of those designs?
 

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hesham

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Many great thanks to you my dear Apophenia.
 

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