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==Specifications (variant) == |
==Specifications (variant) == |
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Revision as of 14:55, 14 July 2011
Nakajima Mamoru | |
---|---|
Type | |
Manufacturer | Nakajima |
Specifications (variant)
References
External links
NK7A
Nakajima Mamoru
Nakajima MAMORI Engines NK7A Mamori type 11 1400kW Ha103 Mamori type 12 Bore: 155mm Stroke: 170mm Displacement: 44.9litters Compression Ratio: 6.5 Diameter: 1,380mm Length: 1,816mm
Nakajima G5N Shinzan / LIZ 4 x Nakajima NK7A "Mamoru-11",
http://www.aviastar.org/air/japan/nakajima_g5n.php
The first prototype G5N1 made its maiden flight on 10 April 1941. Overall performance proved disappointingly poor however, due to a combination of excessive weight, the unreliablity of the Mamoru engines and the complexity of the design. Only three more prototypes were completed. In an attempt to salvage the project, two additional airframes were fitted with 1,530 hp Mitsubishi MK4B 12 "Kasei" engines and redesignated G5N2s. Although the Mitsubishi engines were more reliable than the original Mamoru 11s, the aircraft was now even more hopelessly underpowered and further development of the type was halted.
Francillon, Ph.D., René J. Japanese Aircraft of the Pacific War. London: Putnam & Company Ltd., 2nd edition 1979. ISBN 0-370-30251-6. pg 425
four 1,870hp Nakajima NK7A Mamoru 11 air-cooled radial engines driving four-bladed propellers. http://japaneseaircraft.devhub.com/blog/585641-nakajima-g5n/
Nakajima B6N Jill 1,870 hp (1395 kW) Nakajima NK7A Mamoru 11 radial engine of similar output driving a four bladed Hamilton 135 production Tenzan (heavenly mountain) aircraft had been delivered a new crisis arose when Nakajima was ordered to terminate manufacture of the Mamoru engine, and use the more reliable 1,850 hp (1380 kW) Mitsubishi MK4T Kasei 25 engine
Mitsubishi Ki 67 Peggy prototype Ha-103
Nakajima Ki-49, two 1,870 hp Nakajima Ha-103 radials