Mitsubishi Ki-57 / MC-20 / L4M TOPSY
1939
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Mitsubishi Ki-57 / MC-20 / L4M TOPSY

With interest shown by Japan Air Lines for a civil version of the Mitsubishi Ki-21 bomber, the company built a Mitsubishi Ki-57 prototype, which was flown in August 1940; it differed from the Ki-21 by having low-set monoplane wings and a new fuselage to seat up to 11 passengers. Following satisfactory testing the type was ordered into production for civil and military use under the designations MC-20-1 and Army Type 100 Transport Model 1 respectively (Mitsubishi Ki-57-I), 100 series aircraft being built. The Ki-57-I was superseded from early 1942 by the improved Ki-57-ll, which introduced more powerful Mitsubishi Ha-T02 engines and a number of refinements. This had the civil and military designations MC-20-II and Army Type 100 Transport Model 2 respectively, production totalling 406. A small number of Ki-57-ls transferred for use by the Japanese navy were rede-signated L4M1, and all of these versions had the Allied codename 'Topsy'.

Mitsubishi Ki-57 / MC-20 / L4M TOPSY


Specification 
 MODELKi-57-II
 CREW2
 PASSENGERS15
 ENGINE2 x Army Type 100, 810kW
 WEIGHTS
    Take-off weight8173-9120 kg18018 - 20106 lb
    Empty weight5585 kg12313 lb
 DIMENSIONS
    Wingspan22.6 m74 ft 2 in
    Length16.1 m53 ft 10 in
    Height4.77 m16 ft 8 in
    Wing area70.08 m2754.33 sq ft
 PERFORMANCE
    Max. speed470 km/h292 mph
    Ceiling8000 m26250 ft
    Range w/max.fuel3000 km1864 miles
    Range w/max.payload1500 km932 miles

3-View 
Mitsubishi Ki-57 / MC-20 / L4M TOPSYA three-view drawing (752 x 908)

Mitsubishi Ki-57 / MC-20 / L4M TOPSY

Comments
alan, 08.05.2009

i think it s abad plane for ijn.

Sgt.KAR98, 03.01.2009

Is this one that is showed landing in Letters for Iwo Jima?

Do you have any comments about this aircraft ?

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