Update for "The end of Forked Ghosts"

[Tophe]

For the same company: the (Patent) Brevet of SNCA Sud-Ouest FR 979.984 (see at http://v3.espacenet.com/textdraw?DB=EPODOC...=0&QPN=FR979984 ) was filed in 1942. It was featuring a tail layout to give a good view rearward (or wide angles for a rear device).

So I was completely right (in my E-book "Forked Ghosts") imagining that the forefather (Sud-Ouest SO-1070 or before) of the triplex-boom Centre NC-1070 was simply twin-boom...  

[Tophe]

I've been directed to the very rich source at http://blog.modernmechanix.com/category/aviation/ then Popular Science 3/1945 : "these are the planes you'll fly after the war". Including many new twin-boom projects 1945 that I did not know (I knew only the Wheeler one):

First: design from Howard A. Wolf


from Homer O. Hacker


from Nicholas F. Pederson


from Harold P. Graney

[Tophe]

Thanks to http://blog.modernmechanix.com/2006/07/24/...nderful-skycar/  
it seems possible to add a few things about the Consolidated-Vultee Air-Car and Stout XC-65 Skycar (that I illustrated in my book "Forked Ghosts").
In the magazine Mechanix Illustrated, November 1943 issue, are illustrated 2 flying-car twin-boomers:
- one with 4 spats external from a narrow pod, and with rounded triangular fins, matching my drawing of Stout XC-65 Skycar II, and presented as Consolidated-Vultee Aerocar, designed by Bill Stout.
- one with 4 faired internal wheels in a wide pod, and with oval fins, matching my drawing Consolidated-Vultee Air-Car, and presented as Stout Aerocar.
It is still unclear to know the chronology of both designs, their relation to the USAF prototype XC-65 Skycar II (flying car? what for as military cargo?) and project UC-107 Skycar III.

[Tophe]

Thanks to (Lark and) http://www.commercemarketplace.com/home/Co..._Airplanes.html I could add a limit case to my collection of twin-boomers 1939-45: the Focke-Wulf Fw 198 (not the 1938 DeSchelde S.21 presented by 2 magazines under this Fw 198 name, but another one, completely original, presented by 6 other sources).

This was a fictitious plane imagined by journalists in 1940, which is not a true industrial project but is not either a what-if fantasy fake of nowadays pretending to date from those old years. This was a twin-boomer actually created in 1940, while simply not in a design bureau, and not built.

[Tophe]

Published in March 1949, the Ackerman Patent US 2,463,346 (see http://v3.espacenet.com/textdraw?DB=EPODOC...0&QPN=US2463346 )had been deposited in November 1943. It was, like the forthcoming XC-120 whose first flight occurred in 1950, a "transport airplane with interchangeable cargo holding unit" (for freight or passengers). The delay in publication may mean Mr Ackerman did not get a single cent  for his invention, even if used by Fairchild ^_^ ...

[Brian da Basher]

Woah those are some beautiful spats!

Did I mention that I love spats?

Brian da Basher

[Tophe]

(with no spats anymore, sorry... - but did I mention that I love twin-boomers?)
Another XC-120 forefather: the Gardenhire Patent US 2,514,045 was published in 1950 but filed in 1945... This was a "cargo airplane" for freight, with a removable lower pod that could be taken by trucks.

[Brian da Basher]

No more spats?!!!

I am very saddened by that prospect

Brian da Basher

[Tophe]

Here is another 1939-45 twin-boomer, not featuring spats BUT badly needing spats... This is the US 2,434,068 Patent of J.H. Geisse (published 1948, filed 1944) for a "roadable airplane with folding and detachable wings" (see http://v3.espacenet.com/textdraw?DB=EPODOC...0&QPN=US2434068 ). It is both/either a roadable airplane, operating on highway with folded wings, and/or a flying automobile with the pod becoming a car after wings and tails are removed. There are 10 tiny propellers driven by the central engine. All is perfect, while there is an obvious aerodynamic problem: such fixed landing gear and wheels would need spats for streamlining...

[Brian da Basher]

Thank you, Tophe! I am all cheered up now.

Did you know it's a proven fact that spats add to the coolness factor of any aircraft by 1000%?

Brian da Basher

[Tophe]

The Lewis Patent US 2,504,137 published in 1950 but filed in 1942 (see http://v3.espacenet.com/textdraw?DB=EPODOC...0&QPN=US2504137 ) was dedicated to "Airplane propulsion and stabilizing device" with 2 flying wings, 1 triplex-boom, then a little sketch of a weird twin-boom aircraft having no fin at all... the text saying just (to explain) "another embodiment of my invention". Yes, a very-low-drag challenge for stability, requiring Mr Lewis device...

[Tophe]

And here is the Patecell Patent US 2,534,206 (see http://v3.espacenet.com/textdraw?DB=EPODOC...0&QPN=US2534206 ) for a "convertible amphibian airplane) published in 1950 but filed in July 1945. This was an amphibian plane that can be converted to landplane quickly and at low cost, the twin-boom version being the second one.

[Brian da Basher]

Woah that one's a real winner Tophe! It certainly proves the beauty of twin-boomed aircraft besides our beloved P-38s.

Brian da Basher

[Tophe]

Without relation to the famous twin-boomer Benett Airtruk of New Zealand, the Benett 145,417 of 1945 was a very special twin-boomer, with central booms, not lateral. Moreover, the propeller was rotating around the upper boom. Great!!!
(see the source at http://www.adventurelounge.com/aircraft/fu...design/147.html with an oblical view)

The actual reference for this seaplane patent seems to be Benett US 2,499,350 (published 1950, filed January 1945)
see http://v3.espacenet.com/textdraw?DB=EPODOC...&QPN=US24993501
Weird... I think I will draw a Mustang like that...

[Tophe]

The Carlson US Patent 2,103,499 was published in 1946 but filed in 1944 (see http://v3.espacenet.com/textdraw?DB=EPODOC...0&QPN=US2403499 ). It was dedicated to "Cross wing airplane construction" (or triple-planes), in single fuselage and twin-fuselage layout. The goal was a reduction in weight and an increase in strength over a normal airplane.