MBT 50.02.012 Convair C 240

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50.02.012

Convair CV-240

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Source : www.wikipedia.org/wiki/Convair_CV-240_family

(Editor's Note: the accompanying text is in English, a Dutch version was not available.)

The Convair CV-240 is an American airliner produced by Convair from 1947 to 1954, initially as a possible replacement of the ubiquitous Douglas DC-3. Featuring a more modern design with cabin pressurization, the 240 series was able to make some inroads as a commercial airliner and also had a long development cycle which resulted in various civil and military variants. Although reduced in numbers through attrition, the "Convairliners" in various forms continue to fly into the 21st century.

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Design and development.

The design began its life in a requirement by American Airlines for an airliner to replace its Douglas DC-3s. Convair's original design, the unpressurised Model 110 was a twin-engined low-wing monoplane of all-metal construction, with 30 seats. It was powered by Pratt & Whitney R-2800 Double Wasp radial engines and had a tricycle landing gear and a ventral airstair for passenger boarding.[2] The prototype Model 110, registration NX90653 first flew on July 8, 1946. By this time, American had changed their requirements to require pressurization and deemed the design too small. The first prototype was used by Convair for development work for the 240 series before being broken up in 1947.

To meet the requirements of airlines for a pressurized airliner, Convair produced a revised design‰Û¡ÌÝÌÒthe Model 240. This had a longer but thinner fuselage than the Model 110, accommodating 40 passengers in the first pressurized twin-engined airliner. The 240 first flew on March 16, 1947.

The Model 240 was followed by the Model 340 that had a longer fuselage, longer-span wings and more powerful engines. The 340 first flew on October 5, 1951. In 1954, in an attempt to compete with turboprop-powered airliners like the Vickers Viscount, Convair produced the Model 440 Metropolitan, with more streamlined cowlings, new engine exhausts and better soundproofing for the cabin. As the "Super 240" evolved into the CV-340 and CV-440, the limit of piston-engine performance was reached, and future development centered on conversion to turboprop power.

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Operational history.

The first delivery of a production Convairliner was to American on February 29, 1948.[5] A total of 75 were delivered to American, with another 50 going to Western Airlines, Continental Airlines, Pan American Airways, KLM, Swissair, Sabena, and Trans Australia Airlines.

A CV-240 was the first private aircraft used in a United States presidential campaign. In 1960, John F. Kennedy used a CV-240 named Caroline (after his daughter) during his campaign. This aircraft is now preserved in the National Air and Space Museum.

After aborted negotiations with TWA and Eastern for "Super 240" orders, the production of the 240 series was temporarily halted. In response to a United inquiry, Convair redesigned the Super 240, calling it the CV-340. United ordered 55, and more US orders came from Braniff, Continental, Delta, Northeast and National. Other orders came from abroad, and the CV-340 proved popular in South America. The CV-340 earned an enviable reputation for reliability and profitability, and was developed into the CV-440 Metropolitan, the final piston-engined variant of the "Convairliners."

Kelowna Flightcraft Air Charter, the major remaining operator of this model, currently holds the type certificate for this aircraft.

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General characteristics

Crew: 2 or 3 flight deck crew
Capacity: 40
Length: 74Ì´Ì_ft 8Ì´Ì_in (22.76Ì´Ì_m)
Wingspan: 91Ì´Ì_ft 9Ì´Ì_in (27.97Ì´Ì_m)
Height: 26Ì´Ì_ft 11Ì´Ì_in (8.20Ì´Ì_m)
Wing area: 817Ì´Ì_sqÌ´Ì_ft (75.9Ì´Ì_m²)
Empty weight: 25,445Ì´Ì_lb (11,542Ì´Ì_kg) (revised 29,500Ì´Ì_lb (13,381Ì´Ì_kg))
Gross weight: 40,500Ì´Ì_lb (18,370Ì´Ì_kg) (revised 42,500Ì´Ì_lb (19,278Ì´Ì_kg))
Fuel capacity: 1,000Ì´Ì_USÌ´Ì_gal (3,785.41Ì´Ì_l) - 1,550Ì´Ì_USÌ´Ì_gal (5,867.39Ì´Ì_l)
Powerplant: 2 ÌÎÌÔ Pratt & Whitney R-2800-CA3 Double Wasp / CA15 / CA18 / CB3 or CB16 18-cyl air-cooled radial engines, 2,400Ì´Ì_hp (1,800Ì´Ì_kW) each
Propellers: 3-bladed Hamilton Standard or Curtiss

Performance

Maximum speed: 315Ì´Ì_mph (507Ì´Ì_km/h; 274Ì´Ì_kn)
Cruise speed: 280Ì´Ì_mph (243Ì´Ì_kn; 451Ì´Ì_km/h) (maximum)
Range: 1,200Ì´Ì_mi (1,043Ì´Ì_nmi; 1,931Ì´Ì_km)
Service ceiling: 16,000Ì´Ì_ft (4,877Ì´Ì_m)
Rate of climb: 1,520Ì´Ì_ft/min (7.7Ì´Ì_m/s)

Model Drawing Specifications :Ì´Ì_

Drawing number	50.02.012
Description	Convair C 240
Quality	Ì´Ì_
Difficulty level	Convair C 240
Scale	1 : 50
Number of sheets A00	0
Number of sheets A0	0
Number of sheets A1	1
Number of sheets A2	0
Number of sheets A3	0
Number of sheets A4	0
Total number of drawing sheets	1
Number of A4 text sheets	0
Weight in grams	65
Special features	wingspan 56 cm dM 1987/5,12, 1988/3 Article copy: 52.02.012 (3 pages)
Remarks	Ì´Ì_

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