Martin 2-0-2
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| Martin 2-0-2 | |
|---|---|
| Type | airliner |
| Manufacturer | Glenn L. Martin Company |
| Maiden flight | November, 1946 |
| Introduced | August, 1947 |
| Retired | about 1975 |
| Status | retired, 1 left in a museum |
| Primary users | Northwest Orient Airlines LAN (Chile) United Airlines Eastern Airlines |
| Number built | 56 |
| Variants | Martin 4-0-4 |
The Martin 2-0-2 was one of the first modern airliners. The twin-engined piston aircraft was designed and built by the Glenn L. Martin Company. Glenn Martin, president of the company, intended that the Model 202 would be a replacement for the DC-3. It was also known as the "Martin Executive".
The first flight of the Model 2-0-2 was in November 1946. Full civilian certification was gained in August 1947. This was several months before competing aircraft types. The total production of 2-0-2's and 2-0-2a's (the commercial designations) was about 50 aircraft.
The Martin Company designated the following quantities for the airlines (though not all were built), listed by Martin Model number:
- 2-0-2 - twin engine prototype: 3, in 1946
- 2-0-2FL - twin engine commercial transport, Chile: 4, in 1947
- 2-0-2NW - twin engine commercial transport, Northwest Airlines: 25, in 1947
- 2-0-2LAV - twin engine commercial transport, Venezuela: 2, in 1947
- 2-0-2A - twin engine commercial transport, Trans World Airlines: 21, in 1947
- 2-0-2E - twin engine commercial transport, Eastern Airlines: 25, in 1947
The aircraft was non-pressurized but was considered a long range airliner. A fatal crash in 1948 revealed a serious structural problem in the wings. Structural metal fatigue was the problem in a major wing spar. Alloy 7075-T6 was used, which is susceptible to stress-corrosion cracking and low toughness. The airliner was grounded and modifications were made. The wing components were redesigned and the engines replaced. The changed type was designated the Martin 2-0-2A.
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[edit] Airlines
TWA and Northwest, initial customers of the 2-0-2, eventually sold their Martin 2-0-2A's, to California Central and Pioneer Airlines. Later, Allegheny Airlines acquired many of the 2-0-2's as part of the company's expansion plans, beginning June 1, 1955. Eventually they acquired a total of 18 aircraft.
Only one of this type of aircraft is known to survive, at the Aviation Hall of Fame and Museum of New Jersey.
This airliner type was eventually developed into the Martin 4-0-4, which was far more successful.
[edit] Specifications (Martin 2-0-2)
This aircraft article is missing some (or all) of its specifications. If you have a source, you can help Wikipedia by adding them.General characteristics
- Crew: 3 (pilot, co-pilot/navigator/radio operator & flight steward)
- Capacity: 36 passengers
- Payload: 8,000 to 9,500 lb (3,636–4,318 kg)
- Length: 74 feet 7 inches (22.74 m)
- Wingspan: 93 feet 3 inches. (28.43 m)
- Height: 28 feet 5 inches (8.66 m)
- Wing area: 864 ft² (80.3 m²)
- Empty weight: 22,500 lb (10,227 kg)
- Loaded weight: 36,500 lb (16,590 kg)
- Useful load: 14,000 lb (6,363 kg)
- Powerplant: 2× Pratt & Whitney R-2800 Double Wasp 18-cylinder air-cooled radial engines with Hamilton Standard propellors, 2,000 hp (1,492 kW) each
Performance
- Maximum speed: 243 knots (280 mph, 450 km/h)
- Cruise speed: 220 knots (254 mph, 409 km/h)
- Stall speed: 100 knots (clean) / 90 knots (full flaps) (115 mph, 185 km/h / 104 mph, 145 km/h)
- Range: 1,564 nm (1,800 mi, 2,900 km)
[edit] See also
Related development
Related lists
[edit] External links
- First Martin 202 crash due to metal fatigue. - Aviation Safety Network
- Martin Airliners - Maryland Aviation Museum
- US Airways: A Heritage Story
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