Boeing Model 743 to SOR-198 CX-6

[hesham]

From NASA, Vertical and Short Takeoff and Landing V/STOL Aircraft 1964,

I can't ID this V/STOL transport airplane Project,it looks like a little
Boeing Model-743,but it was not the same,its shape was familiar ?,
so I open a new topic for that.

 

[hesham]

It looks like the same concept from McDonnell ?,

https://www.secretprojects.co.uk/threads/misc-mcdonnell-douglas-vstol-stol-projects.13460/#post-17326

 

[Grey Havoc]

Could be a development of it, yes.

 

[hesham]

The source;

Vertical and short takeoff and landing (V/STOL) aircraft. : Hearings before the special Subcommittee on Research and Development of the Committee on Armed ...

 

[Bazinga]

Since I have no idea what it is, I can not search in this forum for more info.
The article that @hesham posted about Kaman, he is referring to this document
https://babel.hathitrust.org/cgi/pt?id=uc1.31822019293950&view=1up&seq=1

As you can see in the page, you can go to Google books and download the book. On page 167....
https://books.googleusercontent.com...an7nUO8KmmmB39v2FY6Wd0CjtEUKk9QvCc4D7iQQSanFk.....
you will see a peculiar design of a supposedly Army Cargo VTOL plane. It sits in the text about a 1964 R&D VTOL congressional hearing of the XC-142 but this is no where near the XC-142


I can't put my finger on it. I've seen it somewhere but have no clue where to look

 

[hesham]

Dear Bazinga,

we already have it here;

https://www.secretprojects.co.uk/threads/v-stol-transport-aircraft-project-of-1964-to-id.36658/

 

[Bazinga]

Thank you @hesham . I will delete this post.

 

[Grey Havoc]

No need, just have one of the mods merge it with the original thread.

 

[Bazinga]

I am relatively sure this is a Vought study. The whole report was separated into Vendor chapters and this was the Vought chapter. I went into my Vought timeline and found some ADAM studies that point this design into that direction. See the attached pics. Then again, the evidence of Hesham points to MDD....

 

[Antonio]

VSTOL cargo aircraft model. The picture comes from a document dated December 1965.

"American Secret Projects US Airlifters since 1962" by George Cox and Craig Kaston. Crecy
Chapter Four: V/STOL programs SOR-198 or CX-6 (1961) and LIT (1968)

LIT is too late, then could be a SOR-198 study

There are references to SOR-198 in the pages next to the picture source
https://books.googleusercontent.com...an7nUO8KmmmB39v2FY6Wd0CjtEUKk9QvCc4D7iQQSanFk.....

SOR-198 originated as a Tri-Service VTOL program, looking for a larger, more useful V/STOL transport aircraft.
Boeing and North American awarded the research contracts in June 1965.

In the book there are many SOR-198 drawings. The particular model we're trying to identify is not illustrated but it has common elements with a couple of 743 iterations illustrated on page 104 and a configuration study table at page 102. In fact, Model 743-100-81A from August 1965 looks almost identical with lift fans located in the fuselage sides. The cruise power plant configuration, however is different. 100-81A has 4 turbojets. Our model has a pair of turbofan + 2 small turbojet. In my opinion, this is not an ADAM configuration.

The Vought ADAM model from "Notiziario di Aviazione", to me, looks too small to be a Vought pre-1965 SOR-198 proposal. LTV LIT ADAM study was an iteration from Model V-506. Can be seen on page 108

So I'm pretty sure the identity of the unknown model is Boeing Model 743 (Probably a 100 sub series iteration)

 

[hesham]

we already have it here;
https://www.secretprojects.co.uk/threads/v-stol-transport-aircraft-project-of-1964-to-id.36658/

My dear Antonio,

that's almost what I said in original topic.

 

[aim9xray]

I'd agree that it appears to be a Boeing 743 with a propulsion alternative. It also looks like the propulsion is four turbojets powering two very large tip-driven fans. This was a technology that was very heavily pushed by GE in the early/mid 1960s (even for early versions of the CX-HLS/C-5).