Lockheed Model 14 Super Electra
| Model 14 Super Electra | |
|---|---|
 |
|
| Trans Canada Airlines Lockheed 14H2 c. 1938 | |
| Role | Civil passenger and cargo transport |
| Manufacturer | Lockheed Corporation |
| Designer | Don Palmer |
| First flight | July 29, 1937 |
| Introduction | October 1937 |
| Primary user | Airlines |
| Number built | 354 |
| Developed from | Lockheed Model 10 Electra |
| Variants |
Lockheed Hudson Lockheed Model 18 Lodestar |
The Lockheed Model 14 Super Electra, more commonly known as the Lockheed 14, was a civil passenger and cargo aircraft built by the Lockheed Aircraft Corporation during the late 1930s. An outgrowth of the earlier Model 10 Electra, the Model 14 was also developed into larger, more capable civil and military versions.
The design, developed by a team led by Don Palmer, was a scaled-up version of the original Model 10 Electra, with passenger seating increased from 10 to 14. It was intended to compete commercially with the contemporary Douglas DC-2 and the Boeing 247. The first Model 14 flew on July 29, 1937, piloted by Marshall Headle. Early 14's used the Pratt & Whitney R-1690 Hornet engine; later the Wright R-1820 Cyclone 9 was offered as an option.
Lockheed built a total of 114 Model 14s; another 119 were built under license in Japan by the Tachikawa Aircraft Company under the designation Tachikawa Type LO Transport Aircraft Thelma. Another 121 were built by Kawasaki Aircraft Company under the designation Kawasaki Type 1 cargo transporter. The type 1 cargo's fuselage was lengthened by 1.4 m (4.6 ft), enabling the fitting of larger cargo doors.
In Japan during the late 1930s and early 1940s, in common with most large economies of the time, research was being conducted into pressurised cabins for high-altitude flight. In similar fashion to the Lockheed XC-35, in the United States, Tachikawa incorporated a pressurised cabin into new forward and centre fuselage sections for one of the locally built Lockheed Type LO Transport Aircraft. The resulting research aircraft was given the long designation Tachikawa-Lockheed Type-B high altitude research aircraft and the company designation Tachikawa SS-1. The first conversion was completed in May 1943, re-engined with 2x 810 kW (1,080 hp) Mitsubishi Ha-102 14-cylinder radial engines. The two conversions carried out a brief flight testing programme.
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