First flight of the Convair CV-240 – Airways Journal

Dallas – In aviation right this moment, the Convair CV-240, the primary pressurized, twin-engine airliner, first took to the skies in 1947. The kind was a modified design with an extended however thinner fuselage than the Mannequin 110, which may accommodate. 40 passengers.

The American airliner was manufactured by Convair from 1947 to 1954 as a attainable alternative for the extensively used Douglas DC-3. The CV-240 collection, which had a extra trendy design with cabin pressurization, made some inroads as a business airliner and had a protracted improvement cycle that produced a wide range of civilian and navy variants.

Regardless of the accident, later variations of the “Convairliners” continued to fly nicely into the brand new millennium. Till not too long ago, the CV-580F nonetheless flew with Air Chathams (3C) from New Zealand, in response to,

Swissair’s 1949-built Convair 240 in Manchester, England, in March 1950. Photograph: Ruthus – Personal work, CC BY 3.0,

design and improvement

American Airways (AA) wanted an airliner to switch its Douglas DC-3s, so the idea started there. Convair’s first construct, the unpressurized Mannequin 110, was a twin-engine, low-wing monoplane with 30 seats made solely of aluminum. It was impressed by the Pratt & Whitney R-2800 Double Wasp radial engine. It had a tricycle touchdown gear and a passenger boarding aerial ladder on the ventral aspect.

The idea Mannequin 110, NX90653, first took to the air on July 8, 1946. The AA had by this time revised the specs to incorporate stress, and the design was deemed too restricted. The plane was first utilized by Convair for improvement work on the 240 collection earlier than the plane was destroyed in 1947.

Convair CV-240, American Airways. Photograph: John Proctor (GFDL 1.2 or GFDL 1.2 .html), by way of Wikimedia Commons

preliminary operation

On February 29, 1948, Convair delivered the primary manufacturing Convairliner to AA. The corporate bought the AA to 75, in addition to Western Airways (WA), Continental Airways (CO), Pan American Airways, Lufthansa (LH), KLM (KL), Swissair (SR), Sabena (SN), and Trans Australia Airways (TN). ).

On an fascinating observe, the CV-240 was the primary personal plane for use in a presidential marketing campaign in america. For his presidency in 1960, John F. Kennedy used a CV-240 named Caroline (after his daughter). The Nationwide Air and House Museum now homes this sort.

Convair CV-580 (Air Chathams) in Auckland. Photograph: Ingolfson, Public Area


The Mannequin 340, which had an extended fuselage, longer wingspan and extra highly effective engines, was launched after the Mannequin 240. 340 first took to the air on October 5, 1951.

Later, Convair designed the Mannequin 440 Metropolitan in 1954 to compete with turboprop-powered airliners such because the Vickers Viscount. This included extra streamlined cowling, new engine exhaust and improved cabin soundproofing.

The design reached the boundaries of piston-engined output because the “Tremendous 240” advanced into the CV-340 and CV-440, and future improvement targeted on conversion to turboprop energy with the CV-580.

Featured picture: KLM Convair CV-240. Photograph: by Sba2 on the English Wikipedia – transferred from Wikipedia to Commons by KTo288., CC BY 2.5, Article Supply: Velocity, John. Common Dynamics Plane and their predecessors. London: Putnam & Co Ltd, 1990, pp. 187–199 ISBN 0-87021-233-8; “Convair-Liner Historical past.” American Museum of Aviation. Retrieved: October 21, 2011.

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