Lockheed CL-739 and Related Projects

[hesham]

Hi,

a marvellous Lockheed VTOL aircraft projects from 1963,can
anybody identify them ?.
http://www.flightglobal.com/FlightPDFArchive/1963/1963 - 0516.pdf

 

[Barrington Bond]

I don't think these are "true" project designs just comparative studies.

Regards,
Barry

 

[Antonio]

I think the wing from that in Picture number 1 is based on the CL-1200 Lancer

 

[Matej]

Yes, I wanted to write the same. Also the horizontal tail surface resembles F-104, but since this is only a comparative study, it is logical that they used for better estimations parts from existing/proposed planes.

 

[Orionblamblam]

anybody identify them ?.

Lower lefthand corner: CL-739

As the CL-739 encompassed a number of variants (at least 13), chances are good that the other designs are also CL-739-??? designs.

 

[hesham]

Great find my dear Orionblamblam.

 

[circle-5]

3-View drawing of the Lockheed CL-757, which followed the Lockheed CL-739-1 Phase I VTO Test Bed.

Hi circle-5,

do you have also a drawing of the CL-739?

Thanks Maveric

2-View drawing (cleaned as much as possible) showing one (of several) Lockheed CL-739 designs, along with CL-739 project summary:

 

[Stargazer2006]

What a treat today! CL-757 and now CL-739! I strongly suspect circle-5 to own a complete index of all CL- designs. He always seems to be right on... What do you say, c-5? ;D

 

[circle-5]

"I know nothing, NOTHING!"

 

[Stargazer2006]

"I know nothing, NOTHING!"

.

 

[overscan (PaulMM)]

I think its now reasonably certain that the projects Hesham posted are CL-739 variations. The 4th image is close to the design posted by circle-5, though the engine exhausts are further forward. The style of artwork is very similar to the Lockheed artwork, suggesting to me these are Lockheed original artwork.

{better copies attached}

 

[overscan (PaulMM)]

Original source of the above was:

Drell, H. and Danforth, E. C. B., “A Comparative Study of Propulsion Systems for Two VTO Fighters” IAS 31st Annual Meeting, New York, Jan 1963, Paper 63-28

 

[Maveric]

3-View drawing of the Lockheed CL-757, which followed the Lockheed CL-739-1 Phase I VTO Test Bed.

Hi circle-5,

do you have also a drawing of the CL-739?

Thanks Maveric

2-View drawing (cleaned as much as possible) showing one (of several) Lockheed CL-739 designs, along with CL-739 project summary:

Thanks, circle-5!

 

[overscan (PaulMM)]

Original Flight article

 

[hesham]

Many thanks to you my dear PaulMM.

 

[overscan (PaulMM)]

I noticed that the CL-739 drawing posted by Circle-5 is labelled Airplane IV, and this design is the fourth design of four presented in the article.

The US/FRG concept studies by Lockheed and others in 1965 also presented multiple point designs labelled 1 through 4 as we know from the titles of declassified reports.