Martin 3-0-4

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Donald McKelvy
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Artist's impression of Martin 3-0-4 airliner.

An artist's impression of the 3-0-4 model which was to have been Martin's bid for the post-war turbopropped airliner, powered with General Electric TG-100s [XT 31]. Engine development fizzled out, however, and this Martin failed to hatch.
This aircraft was first proposed to United Airlines in 1946.

Source: Evans, Stanley H. "American Notebook" Flight July 20, 1950 p. 93.
http://www.flightglobal.com/pdfarchive/view/1950/1950%20-%201369.html
 

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Stargazer2006

CLEARANCE: Above Top Secret
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Nice find! Does anyone have pictures of the planned Model 305 (unsupercharged version of the 303) and especially Model 306 (twin-jet version with two G.E. TC-180 engines)?
 

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Photograph of Martin 3-0-4 concept painting

Artist's impression of Martin 3-0-4 found on eBay.

URL: http://cgi.ebay.com/MARTIN-3-0-4-FACTORY-CONCEPT-PAINTING-VINTAGE-PHOTO-/310242758758?pt=LH_DefaultDomain_0

Seller's description:
Original Glenn L. Martin Co. factory vintage black and white 8.5 X 11 photograph of a concept painting of the Martin 3-0-4 commercial transport. The 3-0-4 was never built. Perfect, and complete with original news release.
Added from “Found on Ebay” thread
 

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hesham

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From JAWA 1947.
 

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